Most popular questions and responses by Dolapo
  1. physics

    The engine of a locomotive exerts a constant force of 6.5 105 N to accelerate a train to 90 km/h. Determine the time taken for the train of mass 1.8 107 kg to reach this speed from rest.

    asked on October 8, 2016
  2. Economics

    Define table laying and state the importance of table laying

    asked on April 30, 2010
  3. Civic educàtion

    10 ways leaders can protect the Inter ests of their followers

    asked on October 28, 2018
  4. physics

    You are working at a garden centre for the summer. You lift a bag of fertilizer with a force of 143 N, and it moves upward with an acceleration of 0.762 m/s2. a: how much does the fertilizer back weigh?

    asked on October 8, 2016
  5. chemistry

    A many litres of hydrogen can be obtained from the reaction of 500cm3 of 0.5M H2SO4 with excess zinc metals?(molar volume of H2 at stp=22.4dm3).

    asked on April 27, 2017
  6. chemistry

    Suppose that the microwave radiation has a wavelength of 10.8 cm. How many photons are required to heat 215 mL of coffee from 25.0 ^\circ \rm C to 62.0 ^\circ \rm C? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184

    asked on November 8, 2010
  7. physics

    A stunt car driver drives off an h = 7.9 m-high cliff into a lake with a horizontal speed of 17 m/s. The car needs to clear an 17.1 m-long ledge that is 5.0 m below the edge of the cliff, as shown in the figure below. The car just misses the ledge on the

    asked on October 8, 2016
  8. Chemistry

    Calculate the pressure of the dry gas collected over water at 10 degree celcius and 750mmHg. Given that the vapour pressure of water at 10 degree celcius is 20mmHg

    asked on February 7, 2016
  9. Physics 101

    on a uniform beam of length 5m, hangs a mass 30kg at one end. the beam then balances at a point 1.5m from this end. find the mass of the beam(g=10ms-1)

    asked on April 11, 2016
  10. Math

    A trapezium shows a wooden block in the form of a prism. PQRS is a trapezium with pq//SR. Pq=7cm,PS=5cm and SR=4cm.if the block is 12cm long, calculate its volume.

    asked on October 27, 2016