What is the term for the amount of time it takes 50 of an element to decay?
singleAnswer
half life
Half-life
What is the term for the amount of time it takes 50 of an element to decay?
Half-life Reverberation Exponential growth Radiometric dating Radioactive waste Radiocarbon dating Time constant Decay chain Plutonium Radioactive decay
Half-life (symbol t1⁄2) is the <b>time</b> required for a <b>quantity</b> to reduce to half of its 
initial value. The <b>term</b> is commonly used in nuclear physics to describe how 
quickly unstable atoms undergo, or <b>how long</b> stable atoms survive, radioactive 
<b>decay</b> ... Rutherford applied the principle of a radioactive <b>element&#39;s</b> half-life to 
studies of age&nbsp;... Reverberation, in psychoacoustics and acoustics, is a persistence of sound after 
the sound is ... In comparison to a distinct echo, that is detectable at a minimum of 
<b>50</b> to 100 ... <b>Decay time</b> is the <b>time it takes</b> the signal to diminish 60 dB below the 
original sound. ... These are the so-<b>called</b> T20 and T30 measurement methods. Exponential growth is a specific way that a <b>quantity</b> may increase over <b>time</b>. It 
occurs when the ... For instance, with a starting value of <b>50</b> and a growth rate of r 
= 5% = 0.05 per interval, ... So for an algorithm of <b>time</b> complexity 2<sup>x</sup>, if a problem 
of size x = 10 <b>requires</b> 10 ... Parameters (negative in the case of exponential 
<b>decay</b>):. Radiometric dating, radioactive dating or radioisotope dating is a technique 
which is used to ... Additionally, <b>elements</b> may exist in different isotopes, with 
each isotope of an <b>element</b> differing in the number of neutrons in the nucleus. A 
particular ... The mathematical <b>expression</b> that relates radioactive <b>decay</b> to 
geologic <b>time</b> is. Radioactive waste is a type of hazardous waste that contains radioactive material
. Radioactive ... All radionuclides contained in the waste have a half-life — the 
<b>time it takes</b> for half ... When looking at long-<b>term</b> radioactive <b>decay</b>, the actinides 
in the SNF have a significant influence due to their characteristically long half-
lives. Radiocarbon dating is a method for determining the age of an object containing 
organic ... Because the <b>time it takes</b> to convert biological materials to fossil fuels 
is ... expected <b>time</b> a given <b>atom</b> will survive before undergoing radioactive <b>decay</b>
. ... if it is an uncalibrated date (a <b>term</b> used for dates given in radiocarbon years) 
it&nbsp;... In physics and engineering, the <b>time</b> constant, usually denoted by the Greek letter 
τ (tau), is the ... In radioactive <b>decay</b> the <b>time</b> constant is related to the <b>decay</b> 
constant (λ), and it ... a <b>decaying</b> system (such as an <b>atom</b>) before it <b>decays</b>, or 
the <b>time it takes</b> for all ... where ρ = density, cp = specific heat and V is the body 
<b>volume</b>. The daughter of a daughter isotope is sometimes <b>called</b> a granddaughter isotope
. The <b>time it takes</b> for a single parent <b>atom to decay</b> to an <b>atom</b> of its daughter&nbsp;... Plutonium is a radioactive chemical <b>element</b> with the symbol Pu and atomic 
number 94. It is an ... Producing plutonium in useful <b>quantities</b> for the first <b>time</b> 
was a major part of the Manhattan ... Fermi <b>called</b> the <b>element</b> hesperium and 
mentioned it in his Nobel Lecture in 1938. ... 40; ^ &quot;Plutonium: The First <b>50</b> Years&quot; 
(PDF). Radioactive <b>decay</b> is the process by which an unstable atomic nucleus loses 
energy by ... The <b>decaying</b> nucleus is <b>called</b> the parent radionuclide (or parent ... 
(6 <b>elements</b> have 2 different radionuclides) that date before the <b>time</b> of formation 
of ... After World War II, the increased range and <b>quantity</b> of radioactive 
substances&nbsp;...
half - life
Radioactive decay