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Unformatted text preview: 36. (a) We use R = R0 e−λt to ﬁnd t:
t= T1/2 R0
1 R0
14.28 d 3050
ln
=
ln
=
ln
= 59.5 d .
λ
R
ln 2
R
ln 2
170 (b) The required factor is
R0
= eλt = et ln 2/T1/2 = e(3.48 d/14.28 d) ln 2 = 1.18 .
R ...
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.
 Fall '08
 SPRUNGER
 Physics

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