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OpenStudy (anonymous):
Consider a radioactive sample with a half-life of one week. How much of the original sample will be left at the end of the second week?
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OpenStudy (aaronq):
How many half-lives have passed? If the amount you have at that moment decreases by half every week, by the second week you should have 1/4 of the original.
OpenStudy (anonymous):
Thank you buddy
OpenStudy (aaronq):
no problem dude
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