SOLUTION: A lab has 50 mg sample os cobalt-60, which decays at the continous yearly rate of 13%. A) Find a function R(t) that gives the number of mg present as a function of time in years. B

Question 610059: A lab has 50 mg sample os cobalt-60, which decays at the continous yearly rate of 13%. A) Find a function R(t) that gives the number of mg present as a function of time in years. B) How much of the sample will remain after 10 years? C) What is the half-life of the element?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A lab has 50 mg sample of cobalt-60, which decays at the continuous yearly rate of 13%.
A) Find a function R(t) that gives the number of mg present as a function of time in years.
R(t) =
:
B) How much of the sample will remain after 10 years?
R(10) =
put this in your calc
R(10) = 12.42 mg
:
C) What is the half-life of the element?
= 25
=
using nat logs

:
t =
t = 4.98 yrs, half-life
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