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| − | Think about the problem similar to the half-life problem. | + | Think about the problem similar to the half-life problem, but instead of one half, we have 9/10. |
| − | <math>A=A_{0}(9/10)^t</math> | + | <math>A(t)=A_{0}(9/10)^t</math> |
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| + | Then, solve for when A(t)/A_{0} is 1/5. | ||
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| + | Sorry for the confusion I caused in class about this problem. | ||
| + | |||
| + | Your TA, | ||
| + | |||
| + | -Dat Tran | ||
Revision as of 10:26, 2 October 2008
Think about the problem similar to the half-life problem, but instead of one half, we have 9/10.
$ A(t)=A_{0}(9/10)^t $
Then, solve for when A(t)/A_{0} is 1/5.
Sorry for the confusion I caused in class about this problem.
Your TA,
-Dat Tran
