Asked by Josh
Exponential growth and decay
find the half life of a radioactive substance if 220 grams of the substance decays to 200 grams in 4 years?
find the half life of a radioactive substance if 220 grams of the substance decays to 200 grams in 4 years?
Answers
Answered by
drwls
Let the half life be T years
2^(-4/T) = 200/220 = 0.9091
(-4/T) log 2 = log 0.9091
-4/T = -0.1375
T = 29.1 years
2^(-4/T) = 200/220 = 0.9091
(-4/T) log 2 = log 0.9091
-4/T = -0.1375
T = 29.1 years
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.