February 21, 2017

Homework Help: Calc

Posted by Lee on Sunday, November 8, 2009 at 7:47pm.

A sample of a radioactive substance decayed to 93.5% of its original amount after a year.

a) What is the half-life of the substance?
? years

(b) How long would it take the sample to decay to 10% of its original amount?
? years

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