Asked by King hezey

1gram of redioactive material having a half life of 2years is kept in a store, calculate how much of the material will remain unchage?
Answered by Steve
ummm, how long is it kept there?

every 2 years it decreases by 1/2.
Answered by bobpursley
amount remaining=original(1/2)^(time/2years)

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