he was gonna have to politely decline. And she took her video and put it up for us and assuming that's a good sign that she hasn't changed her mind. So when the chair suggested that we do that, we talked about how to best bring it to the five of us so that all five of us could participate in the situation. I don't think I'm going out on a limb to say all five of us probably agree with this nomination in this process, but I wanted to give my endorsement to it. And it is a slightly different process potentially. I think maybe Anke can explain to the other commissioners between now and the next meeting what processes apply and could apply also to this position that may be slightly different than the full-time ED, but I think Heather's willingness to take this on is great. And I would absolutely endorse putting it on for a vote at the next meeting. Commissioner Hill. Up sweetened to the point, I agree. Thank you. Anything else? So we'll put that on the agenda for the next meeting. At this time, we anticipate that to be August 17th. So thanks again, Grace. Anything else on that? So I think Commissioner O'Brien, you were connecting the dots, but maybe they aren't so connectable, but I don't want to jump into anything before we have more guidance. Right, so I think what I was thinking of and maybe because I've had the benefit of another conversation with yourself and Attorney Mackie about process and some of the other positions that this agency has to fill, the quorum that we have being three means any selection committee, if that were to be formed, max is each commissioner or two. I think probably all of us would love to participate in the selection committee for the ED and the IB director if there were to be a search. The question is, if there is a search publicly and externally like there would be for the ED, you'd have four of us and potentially four slots on two different selection committees. If that doesn't go that route, then you've got four of us potentially raising our hands to participate in the ED search. That's the only bit that I thought might play into the constitution of the screening committee for the ED. It's still a little bit up in the air in terms of whether there would be any screening committee and external posting for the IB director, but that was what I was thinking of. Adam Kear? Yes, I'm sure. I would love to be on the ED committee, but I have no problem being on the IB one as well. So take me out of consideration for the executive director and put me in consideration for IB and I think they'll make it a little easier. I do want to pause here. I do want, because this is the connection that I was afraid that was going to be made. The permanent, the selection process for the permanent IB director could be slightly different and not involved. Understood, okay. Right, that's why I'm wondering if maybe a final decision on the screening constitution for the ED be made at the 17th. If maybe we can make a little more clarity on the IB process. Right, and I say that only because we have attorney Mackie here and I know no more than that and have not formed an opinion on it. He just has said that we have, there are different options for that selection process. But we would want to work it out properly. Right, let's see. Commissioner Maynard? I just want to comment that I've thought about this over the last few days. And I think that Commissioner O'Brien, Commissioner Skinner, Commissioner Hill all bring a lot of strengths to a search committee. And I just wanted on the record that I think that however it shakes it out, it's going to be to benefit the MGC into the Commonwealth. There's no bad options here. And I think that I would be willing to support any of my colleagues in this position. So I just wanted that on the record. Commissioner Skinner, anything? No, nothing to add. I'm just, yeah, nothing to add at this point. All right, so we will roll over onto the next meeting, the issue around the screening committee because I'm not hearing anyone. Commissioner, I think you probably agree with me that anyone thinks that going the full public option is the right option. It is through that screening committee process, we understand, right to you. Okay, so we can narrow it on the agenda, Grace, when we put it together, that it would be on probably you will want to get that selection committee voted upon and selected for the permanent executive director. And in terms of the nomination of our Councillor Hall, we'll put that on. So the only thing I need to ask now, and I know it's a little bit of process, but this is how we do our business. Kind of in public here, do we also mark up the selection process for permanent on the same day we nominate for interim? Yes. Are you talking about IB or are you talking about? Yeah, for the IB, yeah. Yeah, I mean, it might just make everything cleaner if we make our choices that way. I think it probably, we can move on, I think, on everything ideally on the 17th. Okay. All right. So I guess we're not making, taking any votes right now. Is that fair? All right. So we're through eight and nine A, but I think Commissioner Hill, you might have a brief commissioner's update. Just very quickly, the House and the Senate have different versions of their supplemental budget, which had the language in it for the extension of summer casting. The Senate yesterday voted to only extend it out a year as it does normally, whereas we know the House had proposed to five years. So the bill now will go to a conference committee, we hope, at some point. So it's gonna be a little bit longer before we see what happens in the sub-budget, but my understanding is that we should have something done by the 31st, whether that's a freestanding bill or something, so that summer casting will continue after the 31st, but that all happened yesterday. So the deadline is July 31st. We're right at that point again. As we normally are. Yep. What's the racing schedule for next week? I'm not sure. I don't know, but there can't be a gap. So today is Thursday. We'll wanna keep close track of that. And I certainly will be doing that with Grace. Yeah, excellent, because they may need a little reminder. And I do know we have that letter that reminds our legislature of the jobs that would be at stake if there is a gap. Yeah, I was wondering, is that already been sent out or is that one that we sent out the last time we hit this close date? We sent it out a little bit ago. We did. When they were talking about the sub budget. Okay. I see Alex coming back on. Okay, yeah, because I know this happened one year where they did have to move some races. Oh, and that was a little bit about, it was a mistake. That was the last time we did this close date. That would be me coming back on you. Could I make a recommendation that we do just re-craft that letter again, sort of as again a reminder as the date rapidly approaches that if action isn't taken, these jobs will be at stake. And Dr. Leipman, I know you have that letter in your head. Yeah, I'm just talking on because we do race, you know, Tuesday, the first. The first. So if it's not renewed by then, we'll be, you know, the horses come from all over the place. They leave early. Right. So besides the simulcasting, obviously, at the three locations, but we would have horses and our trainers and drivers coming in on Tuesday. And does the letter remind them of that too? The fact that even a Tuesday date would require them to sort of know by the weekend? Oh, sorry. Yeah, if they know the day before. Day before. Obviously, the sooner the better, but, you know, if they knew the day before, it would be a mess trying to call, you know, people send out an email blast at midnight saying, you know, we don't know if we're racing tomorrow morning or tomorrow afternoon or not. So, yeah. That happened once, but the legislature's been very responsive, but it is on a Monday, which, you know, it's the weekend that I worried about, right? Commissioner Hill is a Friday, Monday thing. So I think if we could get that letter and I think it's commissioners, we would just, if it's necessary, have it go out, what, Friday afternoon or Monday morning? Which do you want? And the sooner the better. The day. Yeah, exactly. The sooner the better. I was thinking today. Yeah, me too. I'm almost worried that today they might forget. So maybe first thing tomorrow morning. Because of the weekend, you know. Yeah. Today, tomorrow and Monday. Oh, that's true. I think I felt that, as I said yesterday. Yeah. So Madam Chair, certainly the letter would be appropriate, but I think it also would be appropriate maybe for the executive director to call over and talk to the offices of the speaker and the president to just remind them as well. Yeah. So the letter would certainly end up in their mailboxes too, along with the speaker and the Senate president. I think a phone call would help out as well. I think there's been personal visits on the 12th hour to Commissioner Hill in the past, so. Yes, there are. Yes, so. All right, well, good. I'm not creeped up on me. My apologies when I heard the 31st. All right, thanks, Commissioner Hill. Is there anything else? I think at this point, that's all I want to present. Okay, excellent. All right. Anything else, commissioners for updates? Commission recently at a conference and spoke. Is that an invitation for me, Madam Chair? I said you were at a conference. I don't know if you wanted to just. Yeah, I was at the, I was at the Nickel G's conference in Denver and it was extremely illuminating. And I will say that Commissioner Hill is, they're a big fan of Commissioner Hill given his prior work. It was a good panel that I spoke on. It was with some colleagues from the industry regarding technology. And I was able to talk about our privacy reg that we put out that's still under comment. Of course, not giving any final comments given that we still have to finalize it. But it was very helpful. I learned a lot. I hope that we were able to share a lot. And the biggest thing I came away with, which you talk about a lot, Madam Chair, is the popularity of our RG program and game sense. And we are really known for that. And, and respected for that. And so, to all those teams that make sure that we are known as the safest place to play responsible. That's really nice. That's good. Great takeaway. Okay. So our business isn't quite done on commissioners. It's just about 125. And we do have anticipated litigation updates. I do have to read language into the record. That's required by the up and meeting law if we're going to move into executive session. So, and I'll do one for each matter. And with respect to the FBT effort reality case, commission would anticipate that it would meet in executive session, accordance with general laws chapter 30A section 21A3 to discuss strategy with respect to FBT effort reality, LLC versus mass gaming commission. As discussing at an open meeting may have a detrimental effect on the mitigating position of a commission. So, is there a commissioners want to move on that? Madam chair, I move that we go into executive session for the reasons and on the matter just stated by the chair. I'll do a second. Second. Thank you. Any questions? Okay. Commissioner O'Brien. Aye. Commissioner Hill. Aye. Mr. Skinner. Aye. Mr. Maynard. Aye. Nightboat. Yes. So, 5-0 on that. Then we have the gatenary case and the commission again would anticipate that it would meet in executive session in accordance with GL chapter 30A section 21A3 to discuss strategy with respect to gatenary versus when mass G that's discussion at an open meeting may have a detrimental effect on the litigation position of the commission. Your motion to that. Madam chair, I move that the commission meet in executive session in accordance with general law chapter 30A section 21A3 to discuss strategy with respect to gatenary versus when mass LLC as discussions at an open meeting may have a detrimental effect on the litigation position of the commission. Second. Thank you. Any questions? Okay. Commissioner O'Brien. Aye. Commissioner Hill. Aye. Commissioner Skinner. Aye. Commissioner Maynard. Aye. Nightboat. Yes. 5-0. And then the last one, Ferris at L. Commissioner would anticipate that it would meet in executive session in accordance with general law chapter 30A section 21A3 to discuss strategy with respect to Ferris at L versus when resorts limited at L as discussion at an open meeting may have a detrimental effect on the litigation position of the commission. Madam chair, I move that the commission meet in executive session in accordance with general laws to, excuse me, chapter 30A section 21A3 to discuss strategy with respect to Ferris at all versus when resorts limited at all as discussed at an open meeting as, excuse me, as discussion at an open meeting may have a detrimental effect on the litigation position of the commission. So it happens when you try to read to quickly. Second. Any questions? Okay. Commissioner Bryan. Aye. Commissioner Hill. Aye. Commissioner Skinner. Aye. And Commissioner Maynard. Aye. Okay. Thank you. Oh, and I vote yes, so 5-0. So with that, we're gonna go to an executive session. We do not anticipate correct commissioners that we will return to the public session. So those joining publicly will be closing this session and then we will move Grace to an executive session. Yes. You all have a link in your calendar for the executive session, which you can join as soon as this wraps. Okay. Commissioner Hill, all set. Okay. Thanks everyone. And thank you to all the great work. Nice meeting.


Okay, anybody else online other than Amog? All of you have seen the official, this thing, have you seen the official answers of your j-mains? How was it Amog? Was it in lines with whatever you have guessed or some surprises were there? Okay, who else have joined the class? Who else? Amog let's start with you. See today's session I wanted to understand in more detail about your experiences. Okay, and all those Ramcharan is also there. So Ramcharan Amog you can throw light on how you went about preparation for j-mains and what was effective, what was not so effective and how we can change this strategy of preparation for j-mains in the next attempt. Okay, now all this is valid for j-advanced also. Don't think that whatever strategy you will be discussing is not valid for j-advanced because the syllabus is same, right? So whatever mistakes or whatever surprises you have seen in j-mains, same surprises we will see in advance as well. Okay, if we continue to do the same thing. Okay, so first let's keep it open and let can you share your experiences like what was something which you could have done better? You know you could have done something which could have immediately improved your marks or something which is like quite visible that oh my god why I did not do this kind of thing? Something like that happened to any one of you? Okay, great. Now the difficulty level let's talk about difficulty level. Okay, so you've seen the difficulty level of whatever mock test you know you guys have taken, right? So let's say that whatever mock test we have taken was of the difficulty level of let's say 6, okay, from 0 to 10. Okay, now can you tell me what was the difficulty level? What was the difficulty level of the actual j-mains that has happened? Was it less than 6? And if it is less than 6 how much? Was it like 2 or 3? Or it was more than 6? Okay, good. See one more thing I wanted to tell you guys that you know you may feel that somebody else's j-mains have come easier, somebody else's have come difficult. Okay, it doesn't matter it's all relative. So in whatever test you have taken in that test what is your relative performance that is where you will stand, okay? So don't worry if your this thing is difficult or easy. Okay, fine. Now tell me the topics in physics that you think that you have a gap on and we can focus on those topics you know going forward. One by one you can list down all those topics, right? Don't tell me the chapter names because that will be like it will be like you are actually not aware of what is your weakness. So tell me the topics for example Doppler's effect like that it should be focused. So did you find out the topics or you are aware of what are your weaknesses are so that we can focus on those weaknesses, okay? So wave motion related problem, okay? What do you mean Aditya? Wave motion means what? Okay wave equation, alternating current equations related to phase differences. Think on it guys you guys have written many many mock tests and you have taken the actual j-mains also. There will be many topics will be there, okay? Don't hesitate just feel free and tell me all those topics, okay? Don't hesitate. That's it. Here comes the mechanics. Yes semiconductor in fact semiconductor we will study again will not focus on theory too much will focus on the problem solving. So semiconductors is something which I will take up completely and as you rightly pointed out semiconductor circuits. That's it. What about EM waves? It's a small chapter so that is why we can talk we can say that entire chapter. No EM waves, right? You don't need specific heat capacity, okay? EM wave. What else quick? There has to be at least 25 to 30 topics otherwise you should be scoring close to 30 sorry close to 13 to 4 120, okay? Standing waves. Yes standing waves will have nodes and anti nodes. Energy in capacitors, great. Experimental physics which you do in your labs. What all topics you can think of you can look back on your J mains actual paper which you have written. Can you think of you know questions which you have got it right which you have got it wrong sorry a question which you have got it wrong from what topics they are from impulse. Finding magnetic field finding magnetic field is it? Why you did? I mean you have lost too many marks in ciliers is it? What about this chapter? Okay, is that it? So your main weakness lie in non-mechanics topic. So you can see that clearly you can see your weaknesses are in non-mechanics topics, all right? So at time we tend to you know spend a lot of time in mechanics and we because of that the other topics get ignored, all right? So you know what you have to do now, okay? Don't just completely engrossed into the mechanics topics, all right? Because physics is 70% of physics is other than mechanics, all right? So make sure you focus on the other 70% also, okay? So you should fall in love with the marks. You should not fall in love with a topic, okay? Doesn't matter from where you're writing the marks, you should just fall in love with the marks, okay? Nucleus. Anything that I am missing? Give me an example Aditya Mishra. What do you mean when you say Carnot engine application? What was it? Can you quickly tell me what was it? You sent me a WhatsApp message. Which question number Aditya? Question number 30. You guys have any doubts on the physics paper that you have written? Please send me that. We can discuss that as well today. That is heat engine coupling, all right? So you don't have any doubts or any questions on the J mains paper that you have written? Okay, so let us make a small planner over here, all right? So this is something which is, which has to be taken up as theory, all right? So this we can say that requires theory, then this one, this topic also, it requires theory, all right? I think when it comes to AM wave, beads, energy in capacitor, all these you need problem practice, right? If I'm not wrong, please interrupt me if I'm not correct. And then you need theory with respect to, you know, this thing, semiconductor circuits, okay? Then theory is required over here, all right? And this one and probably this one as well, okay? So other than these, I guess everything else will come from the problem practice, right? You need different kind of problems in those topics. Yes or no? Okay, Amog has sent me few questions as doubts, okay? So let us take those questions. Others, if you have any doubts, please WhatsApp me, I'll be taking up today only, okay? Send me your doubts. Now this one, what do you think the answer will be? All of you attempt this one? Amog, what is your doubt in this question? Okay, that is Amog's doubt. But of course, that is not correct. That is what Amog is asking us. Did official answer keys are released? Is official answer keys are released for J mains? That is yet to come. Only your answers are released. Fine. So let's see what will happen here. There is a particle of mass m revolving around the earth with velocity v, okay? So another particle, this is mass m, okay? This is earth, okay? This one is earth. This is earth. Another particle of mass m comes from the space really towards the earth. It comes radially like that, okay? And elastically collides with revolving particle, what will be the path of both stuck particles, okay? So it collides elastically, all right? So along the radial direction, along the radial direction, you can conserve the, this thing. You can conserve the momentum, right? So this is the initial momentum. And if it is colliding inelastically, it should be equal to 2m into v. I am talking about radial velocity, okay? So this is vr. So radial velocity should be equal to v by 2 inelastically, yeah, okay? So it will gain some velocity. Now the mass is 2m. 2m is the mass and it gains some velocity along the radial direction, right? So net, net velocity will be what? The net velocity will be like this, okay? The velocity tangentially will not get affected by the collision. But because of collision, there is a radial velocity also, okay? So it will be like this, okay? So I would say that it will go in the elliptical path, okay? Because it goes like this, okay? Then it again tries to go away from the earth gravitational pull, but then its velocity reverses in direction and my hunch is it will move in an ellipse like this. Amog, are you getting it? Why it will not be circular? It will be circular only when its radial velocity is zero. If radial velocity is there, it cannot be circular, okay? It cannot be circular. Is this thing clear, Amog? In a circular motion, the radial velocity should be zero? Yes or no? But radial velocity is there. So it cannot be circular. Now we have those three options to pick. It will not tend to move towards infinity because it is coming towards the earth. After collision, it has gained velocity towards the earth, okay? So it is not going away from the earth after collision, right? So it cannot be two, okay? Now it can be either elliptical or parabola. Now it cannot be parabola because whatever happens here has to happen there as well. It is, it should be taking a symmetrical path because of the nature of the gravitation force itself. It should be symmetrical, alright? So you cannot solve and get the answer elliptical. You will not get the equation of the ellipse easily like this. But then you can arrive at the answer with visualizing this thing. All of you clear about it? Any doubts? Okay, let's go to the next one. This is a nice question. It was not as simple as I have been hearing. Alright, this question, haven't we did this question? Are you guys able to recall this one? Did we do this or not? I have done this question somewhere. I think in your batch itself. Yes, Lakshya, this is not from the paper, okay? Anyways, all of you please solve this. As you are going forward, all of you must appreciate that for us, all the topics are now, you know, we can take entire syllabus together. So we can, during the class, let us be open that we can take up any question from any nook and corner of the entire syllabus, okay? So that is how the session will be today. We'll be taking up questions from anywhere in the entire syllabus. Try solving this one. All of you, I think this can be done easily. Solve few, I mean, create some equations. See direction perpendicular to this inclined plane is, let us say this. Fine. Let us say the velocity, this is u, let's say finally after some time, velocity is v, okay? Okay, all right. Now, we know that horizontally, velocity should not be changed, right? So in the horizontal direction, whatever was the earlier velocity has to be the final velocity, right? So in the horizontal direction, velocity should be same, okay? So if this is velocity u, all right, this is alpha, then this angle will be 90-alpha, right? Okay? So horizontal direction, initial velocity is u cos 90-alpha, which is u sin alpha, fine? This should be equal to, this is v, this angle is beta, this one is 91 is beta, it should be equal to v sin beta, all right? So from here, you get v as u sin alpha divided by sin beta, okay? Now, I need to find time, right? So I can find the time using vertical components. So initial velocity along y direction is u sin 90-alpha, which is u cos alpha. So u cos alpha is the initial velocity along y direction, final velocity along y direction, it has to be in the downward direction, okay? It cannot be in upward direction. So there has to be minus sign coming up. So that is equal to v, similarly it will be equal to v cos beta, right? So v cos beta, that will be equal to minus of u sin alpha by sin beta into cos of beta, all right? So now all you have to do is use this, v is equal to u minus gt to get the time. Is it clear to all of you? Let us take up another one. Semiconductors, I will be taking up as a different topic itself, I will be teaching from start. So this one, this is, okay, this is again, I think from Lux only because question number 41 in physics cannot be there in J mains from mock test, all right? So you have a uniformly tapering conical wire made up of a material of Young's modulus y and has a normal unextended length l, radiate the upper and lower end of the conical wire have values r and 3 r, the upper end of the wire is, okay? All of you please try this. I will draw a diagram. So this is how it is, it is a conical wire, radiate of the upper one, this radiate is r and that one is 3 r, okay? So this length is 3 r, okay? Capital M is suspended at the lower end, M, okay? Capital M is suspended like this, all right? Now this material has Young's modulus y, okay? Let me represent everything whatever is given, this is the length l. Now here we are ignoring, we are ignoring the mass of the wire. We are saying mass of wire is 0, fine? Now Amogh is asking how to find the stress, this is what he is not getting.  So you assume a dx length of strip, okay? This is a dx length of strip, fine? This is, let us say, this is at a distance of x from the bottom, fine? Now draw the free-body diagram, draw the free-body diagram of this dx strip. This is the dx strip, okay? Draw its free-body diagram. So this force, if you get, all right? This force, if you get that force divided by the area of cross-section of this dx element. So let us say its radius is whatever, let us say small r, okay? So the stress is f divided by pi r square, okay? So strain in the dx is what? Strain in dx is let us say dy, okay? dy is change in dx, okay? dx is the length, dx will become dy, sorry, dx will become dx plus dy because dy is change in dx, okay? So the strain is dy by dx, all right? So stress by strain is Young's modulus, all right? So when you integrate dy, dy is what? Change in dx. So when you integrate dy, you get change in length, okay? Now try this out, all of you please try this quickly. It is a J advanced level question. Okay, anyone got it? Should I do it? No one is trying? Okay, did you get the radius in terms of x? What is the value of r in terms of x? Anyone? You can use similar triangles, right? No one got the value of radius at a distance x from the base. No one got, okay? So let us do it. You draw a line like this. Yeah, this is more of mathematical question than a physics one, okay? Because physically we have already solved it. Concept-wise there is nothing left. It's all mathematics going forward. So let's say this is x, the base radius is 3r, this is r. So this one will be 2r, total length is l, okay? So we have 2r by l. I am using similar triangles, okay? Will be equal to this distance is let us say, this distance is d, okay? So d divided by l minus x, okay? So I am using similar triangles. This, the upper triangle is similar to the bigger triangle, isn't it? So d will be equal to 2r times l minus x divided by l, fine? So the radius will be equal to r plus d, right? So r plus 2r l minus x by l, okay? So that can be written as 1 minus x by l, fine? So small r is 3r minus 2r times x by l. This is small l, okay? So you can check also. Once you get the expression, in physics, you know, good thing is that you can always check the final expression whether that makes the physical sense or not. So this is the expression, you put x equal to 0, you get r equal to 3r, right? That is what it should be, okay? And when you put x equal to l, you should get small r to be equal to r. So that is what you are getting, okay? So this is the radius at a distance of x, fine? So the area is pi r square, all right? So the stress is, now what is the force F? Can anyone tell me what is this value of F? F is what? This one? How much it is? Anyone? What is F? What is this F? F is a force with which the lower part is pulling the dx element down, okay? They should be same as the force with which the dx element is pulling the lower part in upward direction, okay? So just draw the free board diagram of the lower part. No one? Okay, let me solve this. See guys, here I am drawing free board diagram up to a distance of x only, okay? So this is a truncated cone, all right? The lower side is getting pulled by the weight of the block, mg, all right? This has to be equal to, let us say F, all right? These two should be equal and opposite, right? Newton's third law, isn't it? They should be pairs. So F, since this part is at rest, F will be equal to mg, okay? So the stress will be the force divided by pi r square, where r you have already found out in terms of x. Why are we finding everything in terms of x? Because we have to integrate. So pi into 3r minus 2r x by l the whole square. This is sigma, fine? Are you guys following me? Is there any doubts? Tell me. Are you able to understand what is going on? Type in quickly, yes or no? No doubts? Good. So now we'll be using this relation that stress divided by strain is a constant, which is Young's modulus, all right? So strain is, strain is stress divided by Young's modulus, all right? So let us write here strain is stress divided by Young's modulus and strain is what dy divided by dx, where dy is change in the dx length. dx is changing by a certain amount. It is getting stretched, okay? So dy represents how much dx has stretched, okay? So dy will be equal to sigma by y into dx, all right? Sigma you already found out in terms of x. So substitute here and then integrate it. The limit should be from 0 to l, the x goes from 0 to l. This dy will be let's say from 0 to change in length delta l, okay? The final length will be equal to whatever is the initial length plus change in length. Understood how to solve? Should I go to the next question now? Okay? In case you have any doubts, quickly type in this one. All of you try it. Amog, what is your doubt here? You have any targeted doubt, any specific thing you want to ask expanding due to the electric repulsion? Oh, nice question. Okay, so what you have used work energy theorem, this came in your mains paper. Oh, it's a pretty nice question. Now tell me when r is becoming infinite, okay? Just answer this question. When the radius is becoming infinite, what will be the velocity? Tell me, the velocity will tend towards what? It will tend towards, it should keep on increasing or it should become constant. What it should be? Velocity should become constant, because the repulsion has decreased by a great extent. So the force becomes 0 and if force becomes 0, the acceleration should go to 0. And if the acceleration is 0, the velocity can be like velocity will become constant. So it cannot be one and three, isn't it? The velocity should tend towards a constant value. Understood?  Can you send me your WhatsApp? See, look at this in 4, in 4th option, initially, the velocity is close to 0 for small amount of time. It doesn't increase quickly. Regarding it, in option 4, it says that velocity should not increase quickly. Initially, there is some resistance in the increase of the velocity, fine? Now is that what should happen? Is this what should happen? Should this happen? Initially, the velocity will be close to 0 for some time. That should be correct or when the charges are very close to each other, then there should be velocity should suddenly increase from 0. What should happen? In a way, it is a plot between, although the plot is between velocity and the radius, but with time, radius is increasing. So r can be a representative of time also. So you can say that the similar kind of graph is between velocity and time also. So if you see the option 4, in option 4, when r is 0, when r tending to 0, I am saying that the slope of velocity with r is 0 or in a way, I am saying acceleration is 0, which is absurd. It cannot be. So when the charges are close to each other, just give me a second, spherical region having uniform surface charge.  See this outermost. Yeah, it is like supernova explosion sort of scenario. Suddenly, it will expand. So acceleration initially 0 does not make any sense. So 4 is not correct. I would be marking 2. Fine. Amok, which one you have marked? See, whenever there is a graphical question, you should not try to get some expression and then you look at the graphs. When they give you a graphical question like this, they are in a way, expecting that you will be visualizing the scenario and answering it. Answer is 2. Yes, it should be 2. You should be visualizing it and answering it. So the physics is all about visualization. Mathematically, you may not arrive at the answer here and even if you arrive at the answer, it will take lots and lots of time. So by elimination or by applying some visualization, you will be able to arrive at the right answer. All of you clear about it? Any doubts? Okay, let us go to the next one. These are done. Fine. Let me download a few more questions. Okay, it is taking a little time to load. Okay, Amok has sent Naman. Naman, is this from your J paper? Ramcharan, quickly take a fresh image and send me. I cannot rotate the image. Send me the images with proper orientation. All right, image with proper orientation. Okay, this one, who sent me that question? This is Aditya. Aditya, you have to send me the paper with, you have to send me the question with proper orientation. Like this one, I will not be able to rotate it right now. Okay, here is Ramu's question. Kondi, where is Ramu? Where is Kondi? All of you, please attempt this one, this question. Amok and Naman. Aditya, please attempt this one. Kondi has fever and headache. The hint is that both the parts of the circuit, let us say 0.12, this is 3 and 4. 1 and 2 and 3 and 4, both will experience same potential difference, V. Okay, because they are in parallel, these two circuit elements. You have to find phase difference between i1 and i2. Okay, so another hint is you find out the phase difference between i1 and V, then i2 and V. And then you can find the difference in phase difference between i1 and i2. Ramu, it is not purely inductance and purely resistance, right? Sorry, purely inductance and purely capacitance, that is not there. What is the resistance over here? Let us assume that is R, although it is not given, it should be given. If R from the above and bottom are not given, then the phase difference between i1 and i2 is 180 degree. But resistance is there. This one, I am not sure whether it will be R only, it is, we are just assuming it. Okay, should I solve or you guys are in between? Please message me immediately. Okay, you are not getting, fine. All right, let us try to solve this question. All right, so the current over here is because of the input voltage V. Now i1, you can find out the value of i1 as V divided by Z1. Z1 is the impedance of this lower which is equal to root over XL square plus R square. Okay, fine. And the phase difference between the current and voltage can be given by this expression. Tan of phi is XL divided by R. Okay, so XL is what? R by root 2. This is R by root 2. That divided by R. So this is 1 by root 2. Okay, so when I say XL by R, you are automatically assuming that the voltage is ahead of current. Otherwise, you would have written minus of XL by R. If you assume that the current is ahead of voltage. Okay, so you can write the formula for tan of phi, you can say that is XL minus XC by R. When you write XL minus XC by R, you are assuming that the voltage is ahead of the current. If you write XC minus XL by R, you are assuming current is ahead of voltage. So you should be knowing what you're assuming. Then only you'll be getting it correct. Omega will also be there. Where is Omega? No, Omega, see, directly the value of XL is given. Ramu, if L is given, suppose L was given, then you need to find the value of XL using Omega. But XL is directly given. This tan phi, the phi is equal to pi by 4. Okay, fine. Now look at the upper circuit between 1 and 2, tan of it is theta. Yes, Ramcharan, that kind of mistake is, if you know how to solve it and you're confused that okay, Omega is not given and you're not able to solve it, it's not good if you're not be doing that. Then there is no difference between you who knows how to solve and the one who doesn't know how to solve. There is no difference, absolutely no difference. In fact, you'll be at loss because you'll be spending time thinking that you'll be able to get it and you'll not get it. The other person will just skip it. He'll save time. So XC by R is what? R by root 3 by R. So this is 1 by root 3. So when I write XC by R, I'm assuming that current is ahead of voltage. The value of theta is pi by 6. Tan theta is 1 by root 3. So theta is 30 degrees. Tan of pi is tan of pi by 4. Sorry about that. Tan of pi is 1 by root 2 for the lower one. So pi is tan inverse 1 by root 2. In this case, theta is pi by 6. So in the upper circuit, current is ahead of voltage. In the lower circuit, current is behind of the voltage. So the total phase difference between i1 and i2 will be theta plus pi only. That is tan inverse of 1 by root 2 plus pi by 6. Now there could be printing error over here because we have assumed at the upper one to be R if this value would have been R by root 2, then 5 would have been equal to pi by 4, which is 45 degree and this would have been 30 degree. So it would have got 75 degrees. Fine. So I think there is a printing error. This has to be R by root 2. I hope this does not, this did not, this didn't come in any of your JE exam. Is this thing clear to all of you? Okay, let's see what we have next. Who gave this question and from where? Ramu, you gave, right? All of you, please try this out. You started your preparation for J-Advanced. Loud robot sound is there in the audio. Is audio not clear? Is the audio not clear? Oh, okay. Some buzz sound is there. Is it clear now? Is it clear now? The sound is clearer? Better now? All right, solve this one. B, multiple correct options are there. It's not a single correct option. Fine, let's first visualize what is actually happening over here. Okay, then it'll be clearer. A hollow conducting spherical shell of inner radius R1 outer radius R2 encloses a charge Q inside, which is located at a distance D from the center of the sphere. Okay, and we need to answer whether these options are correct or not. Now because of this charge Q, which is off center, okay, it is not placed at the center. What will happen? Charges will get induced, right? Charge will get induced on the inner surface as well as on the outer surface. Okay, so let's see the charge distribution first. So let's say this is charge plus Q. Okay, there is a plus Q charge over here. Because of that, the density of negative charge will be more over here and the density of negative charge will become lesser as you go away from the positive one. So that is how charge will get induced on the inner surface of the spherical shell. Okay, now the spherical shell was neutral, right? Spherical shell is neutral. So it cannot gain the charge from, it cannot gain the charge from outside. So charges are conserved. So whatever was a charge in an isolated system before has to be after. So charges can be redistributed, but total charge of this spherical shell should be zero. So if negative charge is coming out in the inner surface, at the outer surface positive charge will be there. Okay, and there cannot be any charge inside the metal, fine? Because inside the metal, the electric field must be zero if charges are stationary. Okay, now the charges on the outer surface of this spherical shell will be uniformly distributed. The inner surface charges are you know like this. They are not uniformly distributed because they are under the influence of this charge which is off-center. Okay, but these outer surface, outer surface the charges are getting shielded from the inner whatever is happening. So this charge will not create an effect on these positive ones. Similarly, these negative charge cannot create a force on these ones, right? Okay, till now you have any doubts? You have any doubts till now? No doubts. Now let's this will have total charges minus Q, the outer surface will have total charge of plus Q. Okay, so although conducting spherical shell, are you able to see the screen? Are you able to see? Yes, I have said that already I said that a couple of times. Please attempt this now. My screen is not visible yet. Okay, are you able to hear me clearly or still there is some noise? Okay, so let us try to solve this question. So for a point outside, okay, for a point outside you can see that you can see that the potential will be some of the three charges I mean these two charge distribution potential and plus potential due to this small Q. Okay, let's say the distance from the center is distance from the center is given as R, capital R. Okay, so the potential because of this positive charge will be what K into positive charge this divided by R, then there will be potential due to the inner charge distribution. Okay, the potential due to the inner one will be equal to KQ, the potential due to the inner one will be see it is not uniformly distributed. So we cannot treat this as a point charge located at the center. So similar question you said charges get added up and acts like a normal shell with the added charge. No Ramcharan you're confusing. You are talking about something as you're talking about electric field and here we are discussing potential. So potential due to this negative one and potential due to this one. This kind of expression I doubt whether this kind of expression you will get. Okay, let me check the A part potential at the center of the shell at the center of the shell potential will be because of the small charge Q that will be equal to KQ by D only because this charges at a distance of D from the center. Okay, and then there will be potential due to the negative charge that will be equal to minus of KQ by R1. All right, and there will be a potential due to this charge also the posture charge. So that is KQ by R2. All right, so this should be the potential at the center of the shell. Okay, which is happened to be option D. Okay, so D is correct definitely. If D is correct, A is automatically not correct because they're asking the same thing. Ramcharan that that one was a discussion on electric field. If you talk about electric field total charge enclosed will be, you know, will be that potential of the shell. All of you got why option D is correct? Is there any doubt? Okay, potential of the shell. Of course, entire potential will be at the same, sorry, entire shell will be at the same potential because it is a metal. Okay, since it is a metal, it is at the same potential and potential of the shell we need to find out. So let's try to find out. Amogh Goslaw will give you electric field. It will not give you potential, right?  Okay, so electric field is zero because of that, dv by dr, zero. So it means potential is constant throughout the shell. So whatever is the potential here will be the potential there. But since the charges are asymmetrically distributed, so it will be, can we find potential still because of those charges? I think B is also correct. I have a, I would have marked B. Okay, the thing is that the charge distribution as long as it remains, as long as it remains on the, at the same distance from the center will not affect the potential because potential is a scalar quantity. The charge distribution will affect the direction of electric field but potential at the center will not get affected. So yeah, Naman, I usually get the right answer, but I'm thinking of some better logic to tell you guys why B is correct. Why B is correct is, okay, let me come back to you on the reasoning of this. Okay, give me a couple of hours time. I'll come back with with the proper reasoning for this one. Okay, I'll go to the next question, otherwise we'll just stuck with this one and keep on spending a lot of time. Ramu is gone? Ramu is still there? Okay, Ramu is not gone. Ramu is confused. What is the confusion Ramu quickly? Please tell me, okay, properly.  Look at that particular question that we discussed. Okay, that one must be for the electric field. Okay, so when you apply Gauss theorem, the internal charges get cancelled off, the charge on the inner surface of the shell. See, let me show you. Look, when you talk about this Gaussian surface, okay, this negative charge and this positive charge, they will add up to zero, so 12 charges in close to zero. Okay, but if you take a Gaussian surface with it, that is outside, that is outside. Okay, whatever the charge over here appears at the outer surface, it will be treated as if charge Q is on the outer surface. Okay, but that is for electric field. That's not for the potential. Understood Ramu? I know exactly why Ramu keeps quiet. Whenever he has doubt, that is not answered, he'll keep quiet then. Okay, this one. I'm not sure whether it is clearly visible to you guys. Is it visible? Is it visible to you guys? Try solving this. This is from that Lakshabhok. Okay, this is from the Lakshabhok. Naman is, others, are you able to see it? Ramu, Amog, Aditya, are you able to see this? Are you able to read it from the screen? I think it is readable. Naman, just increase the resolution from YouTube's channel. Attempt this. These are pretty nice because whatever we are discussing today, these are pretty good questions because a lot of visualization is required. Okay, this is not a mathematical question. All of you, if you are thinking in that direction that will integrate and calculate to find out, no. If you visualize, you'll be able to get it just in two steps, this answer. C, is that correct? Who gave me this question? Aditya, is this correct? C is correct? Okay, let me know should I solve this? Others, should I solve this? Or should I wait? The hint is look for symmetry. Okay, let us see how we can go about solving this one. All right, so now look at this portion right here. This portion is, suppose, okay, another hint. So, I'll solve little bit and then I'll stop. Okay, the hint is, the hint itself is a question. Okay, how many such portions are required to make a hemisphere? This is the hint. Is this hint sufficient? Did you get the answer now? Okay, you need three of these. All right, alpha is equal to beta is equal to gamma, sorry, pi by three, right? So, alpha and beta is what? From this edge and the horizontal, this is the alpha. Okay, and from that edge to this center, right? So, you need two portion, one on this side and one on that side. Okay, now just imagine how the electric field will be because of the individual portions. Okay, because of this portion, because this symmetric, the electric field will be along the line of symmetry like this. Okay, let us say this is E1. Okay, and because of that portion, because of that portion, electric field will be like this. The magnitude of this electric field also be E1 only, isn't it? Just that directions are different. That's the only difference. Okay, similarly, because of this portion, this one, the electric field would be in this direction, E1. Okay, this angle is pi by three and even that angle is pi by three. Pi by three, pi by three. Okay, so horizontally electric field is getting canceled and vertically electric field is what? 2 E1 cos of pi by three plus E1, right? This should be equal to electric field due to the entire hemisphere, which is E0. Okay, cos pi by three is how much? Cos is 3 half. So, there's two times of E1 is equal to E0. So, from here, you'll get the value of E1 to be equal to E0 by two. Clear, all of you? Okay, let's take up the next doubt. There is this app that comes, okay, there is a cam scanner app that is there for the Android mobile, which can be used to take a pic which looks very similar to scanned image. All right, so next time when you send me doubt, try using that cam scanner app. Is this visible? Try solving this one. The hint is potential difference divided by resistance is current. This is the hint. Should I solve this one or should I wait? Quickly tell me. Should I solve or wait? D, is that correct? Who has given this? I think Aditya, is D correct answer? D for Delhi? Is it C? Aditya, circular guy Aditya, this is spherical, this is spherical shell. You can though use the spherical capacitance formula, okay, you can do that way also, but we are trying to solve it in a more basic manner. Okay, let's try to see how we can solve this one. Potential of the inner sphere, okay. You have solved it using spherical capacitance, is it? If Q is the movement of charge from outer to inner sphere, okay, then potential of the inner sphere is due to the inner sphere that is Q1 plus Q divided by R, okay, plus K times Q2 minus Q divided by 2R, fine. Ultimately, you will arrive at the same expression, okay. So potential of the second sphere is KQ1 plus Q divided by 2R plus K times Q2 minus Q divided by 2R. All of you understood this, how potential at the first and second sphere has come? Any doubts? Any doubts here? My voice is clear, right, that there is no disturbance that was coming earlier, right. I am of the voice is clear now, okay. Just give me a moment, somebody is calling me again and again. Yes, I will call you after the class, right now I am in a class. All right, so the potential at the inner sphere minus potential at the outer sphere, this is the potential difference, okay. So this is equal to what? When you subtract, this term will get cancelled off anyways and you will get K times Q1 plus Q divided by 2R. This is the potential difference. This should be equal to current times resistance R, all right. Current is what? DQ by dt where that times R is equal to K times Q plus Q to R, fine. So this will be equal to K divided by 2RR into dt. But how come this factor of 8 is coming over here? Oh, okay, okay, okay. This K is 1 by 4 pattern not correct. So this, you just integrate this from 0 to t and the value of Q you can get from 0 to Q like this, okay. All right and once you get Q, the current is DQ by dt. Understood? All of you understood now actually current should not grow with time. Current should tend towards this piece tending towards infinity, okay. That is why there is a factor of minus 1 that should come somewhere, all right. So here actually we should write it as minus DQ by dt. There has to be a factor of minus that should come up, all right. So current is minus of DQ by dt, all right. That is how you should write, okay. Because when the current is, you know, you are effectively applying Kirchhoff's law only, all right. So when current is flowing, potential difference is decreasing, okay. So the current is not the cause of potential difference, current is the effect of potential difference. So when you apply Kirchhoff's loop rule, although it is not clearly, you cannot clearly see a loop over here, but actual equation is this, that K Q1 plus Q divided by 2 R, okay, plus R times DQ by dt should be equal to 0, okay. But anyways, if you keep that in your mind that, you know, that current should decrease with time and it should tend towards 0, you can put the minus sign anywhere, I mean towards the end of the solution, okay. Expression, you'll get the same, okay. Let's see what next we have. Okay, that's all. Is there any question I missed today? And anything I did not take apart from that semiconductor question, anything you have sent and I could not take it? Okay, so we have some time. So what I'll do, I'll just pose you some situations, please solve this one. Let's say you have uniformly distributed charge, okay. This is uniformly distributed charge Q distributed over volume, fine, spherical volume of radius R, okay, all right. You need to find potential at a distance small r distance away from the center, where small r is less than capital R. Done. No, Aditya, it's not correct. That's not correct. No, no, that's not how it is. I mean, use the basics, okay. Use the basics. Yes, Naman is small integration is there.  Okay, let me solve this now. Ramcharan has sent me. That's correct. All right, let me quickly give you hint, all right. So I need to find potential at a distance r from the center, okay. Now, whatever is a charge inside this, inside the radius r, inside r, okay, Naman has sent me, Amov has sent. No, Amov, that's not yes. Naman, I think that is correct. Let me quickly show you how we can get that. So inside r, all the charge can be assumed to be located at center, right. So how much is the charge inside r that is q divided by 4 by 3 pi r cube into 4 by 3 pi small r cube. So the charge inside it is q r cube by r cube, all right. So it will behave like as if it is located at the center. So potential due to the charge inside this v1 will be equal to k times charge q r cube by r cube divided by r, fine. So it will be simply k cube r square by r cube. Now this is potential only because of this r radius charge, okay. Now there will be potential due to the charges which are outside, okay. So let's assume that I have taken up a dr width sphere at a distance r away, okay. So for that dr width sphere, this point will have same potential as if this point is on the surface of this dr width sphere, okay. So small potential due to this dr width will be equal to k dq which is inside this dr divided by r, all right. Now dq is what? dq is charge per unit volume which is q divided by 4 by 3 pi r cube which is volume charge density into the volume of that dr width sphere which is 4 pi r square dr, okay. So this is the charge dq that divided by r, okay. So you can see that 4 pi goes off and 1 r is also gone. So dv is equal to k cube by 3 r cube r dr, fine. So v is an integral of this where small r goes from small r. Actually this I should have taken as x, okay. If I take it as x, it will be x square dx, okay. So this is x dx instead of r, okay. Now x will change from small r to capital R because this is the potential v2 that is because of the charge on the outer part of this distance r, getting it. So my integration will be from small r to capital R, okay. So once you integrate, you get v2 and the total potential will be equal to v1 plus v2, okay. So if in case somebody asks you to find out the potential energy between let us say a charge is kept inside this sphere which has volume surface, volume charge density, then potential energy will be equal to charge into potential at that particular point, fine. 3 will be in the numerator. Fine. So that's it for today. Hope you've learned something new. We will plan out something which we should do next class onwards. May I know your school schedule like how it is, your pre-bords, then your boards. Pre-board 1 is over, right? Pre-board 1 is over. Pre-board 2 from 1 to 1 and tentative date for boards. What it is? Can you quickly tell me? Practicals from, all pre-boards are over. Practicals from 21st to 21st to 28th. Boards from 2nd March. So entire FEB is free. It's free. How much time you're planning to devote for board exam preparation? Devote for the board preparation. See when you prepare for boards, it should be like you're preparing for JMAINs, okay. And also when you prepare for boards, keep in mind that this is the last opportunity for you to improve on inorganic chemistry for J advanced, okay. So 2 hours every day. That should be sufficient, okay. So the requirement for J advanced is that you should be 75% and above, okay. Just recheck whether this year it has changed or it has remained the same. But I think more or less it will be that only. So don't try to go overboard, fine.  So 95%, suppose you put double the effort, 95% will become 96%. But is it worth it? Okay, so ask yourself that question. But then I'm not saying that you totally ignore the board exam preparation, okay. That will in fact help you to do well in J as well. If you prepare it the way JMAINs gets prepared, okay. Or you can do one thing that when you prepare for board exam, so you learn about the derivations and all the experiments which are there, don't just stop when you prepare for boards. Don't just prepare for boards. You prepare for boards and then solve numericals which are of JMAINs or J advanced level also from the same chapter, okay. In fact, if you see last year physics paper in board exam, it was mainly application based. A lot of numericals were there and couple of questions were from the previous J advanced questions, okay. Not J advanced, but they were of higher level questions, okay. And mathematics, barring last year, last year and year before that, mathematics came extremely difficult. So the board exam also is orienting itself towards more and more logic based, not memory based, so things like that, okay. So keep that in mind. You can relax for couple of days and then the race again starts, all right. So that's it for today. We'll see you soon. Bye.


If you're a fan of scary games, this next one is for you. So the original plan for today was just a normal FNAF news video. You know, we got some previews for the puppet cover, we got that new Jack O'Chica, Chris the Dreadbeer plushie that was leaked. Uh, but no. As it turns out, there was a huge announcement involving the up-and-coming FNAF game security breach. And that, ladies and gentlemen, is what we're here today to talk about. But first, I got just a small piece of news that was actually gonna be in the FNAF news video, but I guess I'll throw it in here. FNAF security breach now has a page on the official PlayStation website. It's the same thing that we saw on the PlayStation app, but it now has a higher resolution version of the main hub in the Pizza Plex. So there's that, just a small piece of security breach news before hopping to the, you know, the big news, which I'm gonna talk about right for now. So it was revealed not too long ago that the Summer Games Fest 2021 being hosted by your boy Jeff Keely is returning. It's coming back this year and it starts June 10th, Thursday, with a big live kickoff. And of course, you can't have a Summer Games Fest without a couple of games. And so they released a less than one minute trailer showing off a couple games that are gonna be in the event.  So there you have it, boys. Summer Games Fest 2021 is going to have security breach in it.  Like it really is insane just how far this franchise has come. But of course, we can't hop on that too much because we gotta talk about what's gonna be featured. Going to the website offers a bit more information, a description, a rough schedule. This June, the video game industry unites to preview what's next. Starting with a spectacular kickoff live show hosted by Jeff Keely on Thursday, June 10th. Keep checking back as events are added to the calendar. Everything can be streamed for free. No badges needed. Get ready for the big news. Summer Games Fest kicks off June 10th with a spectacular showcase event, followed by updates from the industry's leading publishers. And as you can see, this is the rough schedule on June 10th at 10ampt, 2pm ET. Kickoff live. Jeff Keely hosts a spectacular live world premiere showcase with a performance by Weezer, Day of the Devs and more. On June 12th, you got the Ubisoft Forward. June 16th, you got Steam, Next Fest and July 22nd, the EA Play Live. I don't think these have anything to do with Summer Game Fest. I believe what we are looking forward to, you know, FNAF fans looking for security breach somewhere in this, you know, Games Fest. I'm pretty sure all that will be happening on June 10th starting at 2pm ET. And to just get a scale of the amount of people involved, the amount of teams involved, have a look at this. These are all of the partners. As you can see, Blizzard, Capcom, Epic Games, Innersloth, Riot Games, PlayStation, Ubisoft, Xbox, Steam, 2K, EA, Frontier, Gearbox, Sega, you know, there's so many amazing teams being featured. And the fact that FNAF is there is absolutely insane. And without further ado, I would like to state that I have no clue what's going to be featured. Let's go! So everything from this point onward is going to be my guess, my estimate. Don't take this as fact. Okay, so as for security breach itself, there was no confirmation that we're getting a brand new trailer. I personally think we will because the last one we got was the gameplay trailer back in February. And when this event goes live, it'll be about three, four months since that gameplay trailer. So I hope we can get a brand new trailer, even if it's panning shots. I know a lot of people don't like the panning shots, but it is brand new looks at the game, you know, brand new looks at the locations. I don't know if we'll see a brand new gameplay trailer, like again, the one we got back in February, but I do think we're going to get something.  I think that is bad marketing. I do think we're getting something new. As for the release date, I think a lot of people are hyping themselves up too much about the possibility of a revealed release date. I don't think we're going to get one. I mean, it's possible, but the game just got delayed again. And if it's not getting released until late this year and we're getting it in June, I don't know. That just doesn't add up for me. Again, I know there's a possibility we could get it, but I just don't think we will because think about it, right? Let's say it comes out October, November, December, because that's kind of late this year. And we get it in June. That's a lot of months we still have to wait. So I think it's more likely we'll get it maybe in August for the anniversary of FNAF, maybe September. I don't know. I just think announcing it right now in June when it comes out late this year is a bit too soon. But again, there is a possibility. I also think the presence of Security Breach in the Summer Games Fest 2021 kind of de-confirms it appearing at E3. I know a lot of people wanted to appear in E3, but, and I'm sure you guys will correct me if I'm wrong, I don't think PlayStation's at E3 this year. I mean, these events are happening at basically the exact same time. Summer Game Fest on the 10th and E3 on the 12th. And if we get a trailer on the 10th, a trailer on the 12th, that's too soon. I suppose there is that possibility that it is shown. But since PlayStation's not at E3, I don't think it will be. I think if it is there, absolute best possibility, the best outcome. It's there and we get reused trailers and teasers footage. I don't think we'll get anything at E3. I don't think it's going to be at E3. Mainly because again, number one, PlayStation's not at E3 this year. And number two, the Summer Games Fest is giving us brand new Security Breach content two days before E3. And that's kind of everything we have to go off of. Again, there's no confirmation that we're getting a new trailer at the Summer Games Fest. I do think we are though. Hopefully, Steel will make some sort of tweet once we get closer to the date, saying, hey, this is what you can expect. Because it seems like they're doing that a lot recently, because people are getting really, really hyped up for something. And then we get maybe not the coolest of new things. And then everyone gets upset. So I do think it's in Steel World's best interest to tell us beforehand, hey, you're getting a new trailer. Or hey, it's just more panning shots of locations. Or they won't say anything. They can't say anything. I don't know. But yeah, June 10th, we get brand new Security Breach content. Let's go. So that's it for the video. A normal FNAF video will be releasing very soon. So stay in the lookout for that. Subscribe if you haven't already. Hit the like button. Thanks for watching. And I'll see you all on the flipside. Goodbye. Psst. Hey, guys, listen, we're almost at the 10 minute mark. We got to get there. I'm actually going to use this time wisely. And I'm going to tell you guys about some up-and-coming videos for the channel. So based off of the pop-up teaser in-game and also their tweet a little bit ago, it seems like tomorrow FNAF Air was releasing a water-themed foxy skin. And then like I said, FNAF News Video, I will get that FNAF Plus video, News Video out very soon. I do want to hop into FNAF Air again, because I want to check out more of the gameplay update, talk a bit more about it, because I really didn't get to do a whole lot. I think I did like one actual Bonnie fight besides the tutorial. And that was it. So hopefully you guys can look forward to videos coming soon. I'm back. I'm ready to get uploading again. I'm sorry for like my one-week hiatus. I left because I'm bad at YouTube. Also, follow me on Twitch and Twitter. Follow my second channel, JohnnyBlock's Live, my dedicated news channel, JohnnyBlockShorts. I'm going to be uploading on there very soon. All right, bye-bye.


I'm making a quick video today as a warning. It's a very serious situation. I hope everyone takes this seriously. Please stop using the distribution Linux FX. And I'm not playing. I never tell people what Linux distributions to use or not to use, but in this case, Linux FX is a very dangerous situation here. I made a video about this just a couple of days ago. Proprietary distro Linux FX has user database compromise. What Linux FX is, it's a Linux distribution theme to look just like Windows 11. And it's designed to attract Windows 11 users to using a, I guess, free version of Windows 11, you know, this Linux distribution, but it's not really free. It's proprietary software and it's paid for software. You actually have to register it. You have to activate it with a key just like you do on Windows. It looks and feels like Windows 11. You get this pop up, yeah, you need to activate your copy of Linux FX. The problem is that database was compromised. It was out there in the open. It wasn't anything that was complicated to get into either. It was a very easy database to just anybody could go and grab and this database shared everyone that had ever registered for Linux FX. It shared their name, their email address, their IP number and some other superfluous information. And this database was so easy to compromise that it's hard to take this Linux distribution seriously. And I mentioned that for me, I mean, even when I first took a look at this distribution about three months ago, this distribution just reeks of a scam, right? It looks like it's just a bait, right? It's a bait to try to trick people into using this Windows 11 clone. I also think that this Linux distribution is gonna have some legal issues for ripping off a lot of artwork and fonts and trademarked stuff that Microsoft obviously will own. So this is not a distribution I would recommend anybody to use. Matter of fact, when I took a look at Linux FX three months ago, I specifically said several times on that video, do not use this Linux distribution. If you need to use Windows 11 and Windows only software, please use Windows. It's probably safer to use Windows than this distribution. And I'm right in like this distribution. So they had this major compromise and what makes it even worse is people let them know about this compromise. So they fixed it, right? So this is their ticket system here on SourceForge and people open some issues for a distribution that wrongfully claimed they had a million users because on their website, let me go back to the website to show you how shady this distribution is. What tab is their website here? I scroll to the bottom. Over one million users worldwide, except when their database was compromised, they had just over 21,000 users listed in the database, right? So it is not a million users. It's only 21,000 users. And it may not even be that many that are really active these days because when the database was compromised, these guys, I guess, took the database down. And what it did is it made everybody that had already registered for Linux FX, you know, it deactivated their keys. So they had a few tickets opened on the SourceForge here, but just a few, like just three or four. So apparently not that many people, thankfully, were using this, but it doesn't look like they really took this seriously because all they did was they changed the way this activation process is done. So there is a new post now over at colonel.eu, that's colonel, K-E-R-N-A-L. And this is the same site and the same author that let us know about the database breach the other day. He said, well, they tried to fix it, but they did even worse this time around trying to fix it because it's even easier now to get username and password for the database and still get all the information. So this was the article from two days ago. Let me go to the home page here and there's this new article, Linux FX Revenge of the Skids. And it looks like their solution to solving this problem was to change the activation client binary. So the Linux FX register program, it basically disables sudo privileges when you're running that program. So you can no longer sudo some kind of command and get the information like a password and stuff like that because it disables sudo. It disables sudo by using pkexec killall-9 sudo. pkexec is another program that gives you super user privileges. So anyone using tools like BPF Trace can't use sudo with it. So they really can't get the information about hostname and password and things like that that was previously working. The problem is, okay, you disabled sudo with that particular graphical application, the Linux FX register application. And you did it by using pkexec killall sudo. Well, pkexec gives you super user privileges. So you can just do the same thing using pkexec instead of sudo and you get hostname, user, password, database, important number, everything you need to actually look at this information. And what's sad is now, instead of having this information directly on the ISO, you know, you can just get this information on the web and it's so easy to get the website. I'm actually gonna show you the webpage. This particular website, the string of characters here, that's the password to the database. And this URL here is username, hostname, IP, database name. Guys, please, and this is not a joke. Stop using Linux FX if you're using it. Immediately stop using it. And if you know anybody that's using it, tell them to stop using it and spread the word around the community that this distribution really is really shady. Like no one has any business using this thing. This thing is a very dangerous piece of software. And I just wanted to put that out there today. Before I go, I wanna thank a few special people. I wanna thank the producers of the show. Devin, Dustin, Gabe, James, Maxim, Matt, Michael, Mitchell, Paul, Scott, Wes, Wanyu, Bald, Homie, Allen, Amber, Draggy, Chuck, Commander, Ray, Dio, Kai, Dylan, George, Lee, Lenny, Snow, Ninja, Marsh, Drum, Mike, Erion, Alexander, Peter, Archim, Adore, Polytech, Riala, Teeth, Red Prophet, Steven and Willie, these guys. They're my highest tiered patrons over on Patreon. Without these guys, this episode would not have been possible. The show is also brought to you by each and every one of these fine ladies and gentlemen, all these names you're seeing on the screen. Those are my supporters over on Patreon. If you want more videos about Linux and free and open source software, subscribe to DistroTube over on Patreon. All right, guys, peace. I swear an eight year old can design a more secure distribution.


Okay, welcome for the Debian Science Boff. My name is Andreas Tiller, I'm a physicist working basically in the Debian MED team and because medicine biology is closely connected to science and we are covering common things, I'm also always engaged in Debian science. I just have prepared some slides which show who is working in the Debian Science team. You see the Debian Science team is uploading a lot of packages. This is the number of packages done by different people. I realized that I did a lot in the last time, but these are mostly our packages. Anton Gladke is quite active, Sylvester Lidry has more or less initialized the team. Ola is here in the room and these are the active people and you see they are continuously contributing. On the Debian Science user list, we are discussing common topics about what should be packaged and kind of interaction between users but mostly developers which could be quite good if there would be some more users asking questions like what could be packaged, what's interesting for the users but maybe this becomes some more use in this sense. There is also a developer mailing list. We have some technical things will be discussed and specifically these two people are actually not Debian Science members but they are doing QA work, they have a box here so the box of the report is not really contributing to the team but they are asking the team to do something. These are the people who are hunting bugs in the Debian Science team so you have also Ola and me are mentioned there because we are fixing bugs in our packages and these are the people who are contributing to the version control system. This is in 2018 is a little bit short because I did not switch this graphics to Salsa and I need to do some work for this but you see that we are constantly committing things for the packaging and this is my team definition which I use in the Debian Meet team it's not so good working in the Debian Science team because in the Debian Meet team I experienced that I had a problem Saturday night, 12 o'clock and I was writing to the mailing list and on the Sunday morning when I opened my laptop somebody said, oh I have solved your problem from yesterday and so I wished that the Debian Science team would be more like this that we cooperate more and people would not just stick to their own packages and reach out to others and help others a little bit more. This is, unfortunately you can't see it here on this screen this is a bit sad, I need to explain this projector has a problem, right? I hope it stays. This bar reflects how many people or how many packages get contributed by only one person this number of packages gets contributed by two persons three, four, it goes quite steeply down this is not really a team because if you would have a team the number of packages that are only maintained by one person would be basically zero and then for instance in a Perl team the graph goes like this so most packages are maintained by two or three people and not only by one person which shows that this team has a problem well not really a problem but it's not really teamwork but it's a collection of single package maintainers which I would like to improve so I have prepared a wiki page which exists since several years for the Debian Science booth and I switched to this wiki page and we can also take notes in Gobi if somebody wants to take notes here this would be a document where somebody could do some notes for this booth these are all my slides I imagine that we hand around the mic and you say your name and why you are here and what you are expecting from Debian Science and how you want to contribute to Debian Science is okay for you and maybe you can start because you are sitting next to the mic say your name, what you are doing and then turn around the mic and then we know each other and then we talk a little bit about Debian Science I hope you will find this Okay, I'm Rafael Li from China, Shenzhen I'm a robotics engineer I work on robotics systems mainly you work on logistics our company designed the automated logic operating solutions for logistics for the existing industry they use some computer vision to solve the problem but for ordinary computer vision implementations it cannot tell different packages we have packages from different sides and different colors so the pattern matching in traditional computer vision cannot work so we develop algorithms and social structures to solve that problem to make the classification automated you said robotics or logistics both because we have this robotics task you should know it are you aware of this? Debian Science has created some tasks which contain packages like mathematics, meteorology and we have also wait a moment the screen is not good here we have also robotics it's a difference between my screen and this screen so we have robotics so the Debian Science team has created different so-called tasks this is a blend term and this one is collecting everything that is connected to robotics this is a robotics task which has applications and we have also robotics develop these are packages which are used in developing applications are you aware of these packages? sorry, no it's good then I can transport some information to you this is the point of this part and if you have some applications which are missing here then we should package this are you aware of how to build Debian packages or not? we are using Debian you are using Debian have you built your own Debian package? yes then you can build official Debian packages by finding a sponsor and we put it into official Debian ok, well consider that your task is subscribe to the mailing list and say, hey, I'm the robotics guy I want to contribute here and you also see your friends it is José Luis Rivero and Dimitri, no, this is probably a sponsor but the maintainer is José Mattia is also a sponsor, José maybe it's just José but he would be I think Leopold Paloma Alavedas these are both Spanish guys wait, it's coming up here he is also working in robotics these two guys and if you work together you can make you can cover the robotics task even better and because we have no logistics task if you have some dedicated packages for logistics you can add the task with this one ok, if you have questions now or later, I'm here for full week ok ok, then pass the mic hi, my name is Norimitsu Sugimoto I come from Japan I worked as a programmer I worked post-grace GIS programming and time mapping programming on GIS data and GIS data is based on science I study science and science I know in the project many brands I know I understand many brands ok, if you are working with GIS do you know that we have a Debian GIS team? GIS team I know I know both Debian GIS are fast time yeah, so maybe Debian GIS has also a dedicated project like Debian Meet and Debian GIS they are both scientific brands which have dedicated packages so maybe you find some some software here and maybe you can work together with the Debian GIS team this would be interesting for you you can pass the mic hello everyone my name is Wentin Yang I come from Taiwan and I study law focusing on information law so interesting in user privacy those kind of issues actually I am not familiar with Debian but I use Ubuntu so I just run into some topics and go into the room and listen ok, that's all if you study law there is kind of a blend which is more or less that called Debian Lex there is a mailing list but it's mostly not used so maybe you can write an email here maybe we can discuss something but it's a difference if you talk about law and law issues or if you talk about privacy privacy is more general which is not necessarily law also but thanks for showing up here hello my name is Cher Xu I am from Shanghai I am working in a company which is doing Internet of Things IoT and I just jump into the company so I don't know what the company do sorry and I am almost nothing to do with IoT I am an SRE guy so I don't know too much about the Debian science pretty like that I think there is also some IoT team but it's not listed here I was planning to go here to pick something about that but I am not prepared for discussing about that ok, pretty like that fine that you are here, thank you ok, I am from Shenzhen China and I was interested in Debian science because my personal is kind of my personal interest related to mathematics and physics I was planning maybe I can get some package to work on my own PC and visualize some mathematics phenomenon or physical principles on my PC and I think I can learn a little bit of things from this both I hope you can learn is that we have these task mathematics and mathematics development and mathematics relevant applications and I have noticed that even all this, ok my name is Cong Yu Liao and I am from Taiwan and I am working in E3 my major job is to study and developing algorithm for panoramic video and need some computer vision such as disparity find the disparity of image that sounds interesting I don't know if you have some support here but maybe you I always recommend that you subscribe this Debian science mailing list and discuss what you would like to see in Debian and so this is always helpful maybe there are some friends just hanging around on this list and are too shy to write something and then you find some friends there and this has some chance I can't promise maybe you want to pass the mic or you come close over Hello, my name is Artu I am from Brazil and it's obvious because of your t-shirt and I just finished my masters so I was working benchmark applications to perform scalability analysis and that's one thing that I am interested in to performance and scalability but I am also interested in discovering new tools to get more data related to Debian I believe that Debian has a lot of information and we could make science with it and I am here to discover some tools that are already available in the Debian infrastructure I recommend to read the task here we have data acquisition which is probably relevant for data analysis and if you have some ideas how to restructure all these tasks maybe we could add some more which fits more your field the idea of the task is to up get install science this data acquisition to have everything what is inside Debian 2 on your computer not only installing one package this kind of meta packages I explained tomorrow in my talk about blend techniques this should give you some idea this is not a static thing we invented this is somehow in flux and if it can be made better please provide some information Hello, I am Steven I am living in a small city in Germany and a member of a hackerspace there so to us I think the electronics packages, the electronics task would be most relevant to what we do there and we do a lot with Arduino and small embedded systems Thank you I am from Taiwan Taiwan is a beautiful city and I am studying biology so I am not cross computer and I just know Debian before I don't know Debian Khan and I am so I am here Thank you Hello everyone I am more Joe Chinese master student and I am a member of Debian science team Recently I am working on programming packages and Julia language and MKL Hey everyone My name is Yunxion Chai and I come from I come from mainland China and actually I am majoring in chemistry and Debian is actually my working environment on some scientific computing The packages I am currently using is basically for some quantum chemistry computing and actually sometimes I grow max for molecular assimilation and that's it I am basically a user I am not a DD yet Wait a moment please This is Debian team which is probably where you can find some friends like Debian Geese or Debian Meet or Debian So if you are a chemist they are really in need of people who are working together with them So if you could learn how to package and join this team this would be really really good because there are well only 5 people about which are working this and they could use some help So if you join the team you are more friendly and kind people and looking for some more contributors Yeah, thank you Hi everyone My name is Xu Xiao I am a student of linguistics and I am going to start my master in computational linguistics this year in Europe I used Debian Science linguistics during my bachelor project and actually it's basic Python and RTK Well, my suggestion is that maybe Python or PIPI should be included in Debian the linguistics package because it's essentially used in every single computational linguistics project Yeah, as you see we have a different linguistics task and if something is included or not included it's basically depending on who really does the work if you want to get something included then it's the best idea if you include it yourself it's not that hard we everybody of us started some day I also did my first package it was a little teddy putting around on the screen so I did to make my son happy so you can learn that it would be a good idea people in the linguistics are working let's have a check it's not so many people as well it was just sponsored by me here I think it's Karthik mystery I think I have seen his batch here on the Debconf so I wonder why he isn't here in this bof though there are some people I think you should watch out for Karthik mystery I've seen this batch on the Debconf I have no face behind it but talk to him work together, build a package you need and put it in Debian this is my recommendation we share this one actually you said that you use NLTK package and NLTK package maintainer do you use SPACY that's also a famous computational linguistic package SPACY yeah actually some of my research project covered natural language processing but it's not my major but I maintained some package recently I no one month ago I started to package SPACY but then I aborted it because I don't have enough time if you are interested in some packages like SPACY you are welcome to contribute please share the mic we get everything on the video stream the contact should basically be Debian-science at this.debian.org because if you just do too discuss each other you waste the chance that somebody else joins the discussion so I would really strongly recommend to discuss on the mailing list for instance this cardiac mystery might have some additional input to your discussion so please use the mailing list and discuss there and I trust him that he is also a good mentor than teaching you something because he is doing a really good job it's a good I like this conversation inside the box because it somehow has a potential to get new contributions okay my name is Ulle Streicher I am working for Debian-Astro which was in the beginning also part of Debian-science and then separated into its own blend and for Debian-science I contribute whatever is we need and is more or less common for others as well actually as a comment for instance if you are working for robotics and so it might be an interesting thing to say oh we are now 4 or 5 people working for robotics let's do a separate blend and do more fine-grained tasks than just this robotics task this is what happened in Astro and maybe in others so this is a good idea to say now there is a critical mass of one-on-one hand packages and on the other hand maintainers and then you can build your own group which might attract more people than such a general science blend okay hello so my name is Ralf I am working at a university in Paris and I am interested in formal methods program modification start solving SMT solving things of that nature so these are tools which are part of the logic logic task and I have contributed a few things to this task okay yeah so do we have further questions about something we should do in Debian so I think the essence of this was we have basically we cover the fields of the people here in this room and we could add more packages to this and my advice is don't wait until somebody else has built a package just do it yourself because it's some time to learn but you know that it will happen if you really want to and in Debian it's a way you have no upload permission if you are a newcomer but you can ask for a sponsor and this is Debian developer with like for instance Ralf we can good sponsor or I do it also myself then we check your packaging and upload so if you find a team like Debian science your chances to find a sponsor are higher than if you are just a random package because I try to assemble people with common interests there and people with common interests have better chances to get something done so this is the idea of Debian science or if you have I'm also running in the Debian media team kind of a sponsoring program mentoring program is called once where I teach people to package something maybe someone defines the time also for you to teach you how to package because the entrance to Debian is more easy I have a general comment so I think that Debian science team is somewhat atypical in Debian because that explains part of the problems that you mentioned because it's not centered around one computer technology because there are many teams which are centered around a certain programming language like your camel team or pearl team or peasant team or stuff like that or around KDE or GNOME or things like that and that's of course not the case with science because they may use any technology so maybe it's not really fair to compare the statistics with what you see and the pearl team so maybe the team which is closest in nature to this team please do not laugh as the games team for sure they should have very similar problems definitely not more things because we have language teams which are technology oriented which have application oriented teams like games or like science or all the other plans so when I'm doing packaging I have touched from the technology that the software was written at least 10 maybe 15 programming languages which I don't speak myself but I try to do the installation method reading how to install software then you can print a little bit of package but this makes I'm very bright from the technology but I'm not very deep if there are problems I always need to address the Java team, pearl team and ask for help and this is maybe also for you the case if you find a scientific application you need for your topic but you have no idea about the programming language you don't should be afraid about this because we have all the language teams and you can ask there and there's also I just repeat what I said before there is a Debian mentors list Debian mentors help you doing the packaging and despite the fact that I'm a Debian developer since 20 years I'm frequently showing up there and say I need help for this or that problem and this is a very nice experience when you get the help after a couple of hours which you can't do yourself and there is a lot of knowledge hidden somewhere in the Debian universe and you should just try to find the way to this knowledge usually by asking or mailing this and I just try to create the Debian science list first and then we can redirect you to the places where you can find help I have another general comment to do a possible problem with science related packages is that there are sometimes badly perceived in the community for a certain reason so software is coming from universities from research institutions have a certain bad image which is that they are badly maintained that they are one short developments that is some PhD student or some researcher for his research project he writes a software and puts it on his webpage and then the PhD student finishes his thesis and goes away or the researcher goes on a different project which is no longer maintained and for this reason scientific software often has quite bad image in the community which is not completely wrong so there is some foundation for that in my opinion I observed it as well some more like issues in publication and then forget the software something like this but you find examples for this and you find examples for things that are definitely better maintained and so we have I agree on the deviant development list, the scientific software has some bad images from some people specifically the people who are doing the ports to other software the scientist writes a software in MT64 and don't care about ARM or even more strange architectures or strange is the wrong word it tastes unusual architectures which is a good reason because who wants to do gene sequencing on his mobile phone nobody will do this and so there is no real need that this software really runs on mobile phones or other internet of things typical devices the argument the porters have in this case is that if the software is well written it can run on any hardware but the scientists just don't care and we also have limited manpower and then we say okay we provided for AMD64 and this must suffice for all practical cases it's sufficient and other cases yeah who wants to port it he can perfectly file bug reports and patches any more comments others we have seven minutes left so I would like to know if Debian has some tools for example to access data from other tools for example UDT and get data from archive as well in an easy way and you have this kind of tools to facilitate this work to get data from other I'm not sure what you mean about data but we have the data about the Debian packages these pages are generated from UDT this is everything in UDT we have also data I go to the Debian Meet package because we have what's interesting for scientists in Debian Meet close to every package has this information I'm very keen on it close to every package has a citation which is very important for me because it's an additional motivation for the scientists that they are my publication has another Google hit on a well searched website and so we provide some service for the software also and they are on the other hand more happy if they see this package for them we have also some data about registries of the software so this is metadata we put into the packaging and then it goes to UDT and you can drain it from UDT directly and for instance it is rendered here answer to the question? yes I would even expand on that citation approach which is I think very important for they are not just the authors but also for the users for example in astronomy there is a big effort now ongoing that the people should cite actually the software they use and that's about if you have a system which is ready then that's quite difficult to find out what's there and what could be cited and if you have all the information right there then it's much easier for the people to find out what they actually use so what I'm doing if I'm precise start to package a new software I do the Debian packaging and I'm seeking for the publication belonging to this and add the information this is for me if it exists the package is only complete if this information is included in the packaging I hope that every member of Debian Science will do the same maybe we could somehow also ask the upstream to put their preferred citation methods on their web page or we do that in the moment already in astronomy but I think that's worth everywhere maybe but I have made experience that 50% of upstream is very responsive and the other 50% just don't realize so we can only cover 50% with these requirements I think it's a question to teach people in general when writing scientific software to be aware of that they maybe want to be cited somehow it should be easy for others to find out I fully agree some more comments if there are no further comments I'm here the full week if you have questions just approach me maybe I can redirect you to the people who know better than me and thanks for attending oh there's another question by the way I have to talk about the technique behind how these web pages are created and how meta packages are created and so on so when you create a kind of experiments to publication, article, paper stuff like this you want people to reproduce those experiments using your scripts and use your data I have no scripts and no data this is what upstream provides I take software if they are providing data then yes but my question is does it make sense to create packages for to put together the set of scripts that I have to try to make my experiment yeah sure more reproducible well I have my personal policy is I package every software I'm using every software even if I have a very private stuff I'm using on my computer package because if I want to install it another computer I'm way faster starting from 3 computers you need to install it's worth the effort to do the package and if some colleague of mine approached me oh I need software this or that I will not manually install it I create a package and the package is installed so it makes sense because maybe you want to run your software in a cluster also and then you will be happy to roll it out in all the machines whatever application and finally the packaging is also some kind of documentation how you install the package sometimes you forget oh what did I the documentation is the packaging codes with the rules file documents what you did to install the package so it has several advantages so I think we have to finish now thank you for attending and maybe see you tomorrow maybe you see you in the R I don't know how many people are using R this statistical program I'm doing this as well now