SOLUTION: The half life of a radioactive isotope is 394 days. A sample of this isotope is 10 grams.
a. Find the model, A=Aoe^kt, that describes the decay of this sample.
b. How long will
Algebra ->
Logarithm Solvers, Trainers and Word Problems
-> SOLUTION: The half life of a radioactive isotope is 394 days. A sample of this isotope is 10 grams.
a. Find the model, A=Aoe^kt, that describes the decay of this sample.
b. How long will
Log On
Question 866024: The half life of a radioactive isotope is 394 days. A sample of this isotope is 10 grams.
a. Find the model, A=Aoe^kt, that describes the decay of this sample.
b. How long will it take the sample to be 3.5 grams? Answer by ewatrrr(24785) (Show Source):
Hi
The half life of a radioactive isotope is 394 days. k = ln(.5)/-394 = .0018
A sample of this isotope is 10 grams. A = 10e^(-.0018t)
b., t = ln(.35)/(-.0018)
