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College Physics 10th Edition by Raymond Serway,Chris Vuille
Edition 10ISBN: 978-1285737041College Physics 10th Edition by Raymond Serway,Chris Vuille
Edition 10ISBN: 978-1285737041 Exercise 65
A by-product of some fission reactors is the isotope 
, which is an alpha emitter with a half-life of 24 000 years: 
Consider a sample of 1.0 kg of pure
at t = 0. Calculate (a) the number of 
nuclei present at t = 0 and (b) the initial activity of the sample. (c) How long does the sample have to be stored if a "safe" activity level is 0.10 Bq
, which is an alpha emitter with a half-life of 24 000 years: Consider a sample of 1.0 kg of pure
at t = 0. Calculate (a) the number of nuclei present at t = 0 and (b) the initial activity of the sample. (c) How long does the sample have to be stored if a "safe" activity level is 0.10 BqExplanation
Verified
Verified
(a)
The mass of the atom 
is .
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College Physics 10th Edition by Raymond Serway,Chris Vuille
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