November 25, 2015

Homework Help: Physical Science

Posted by Gina on Thursday, March 29, 2007 at 10:24pm.

A gram of radioactive material has a half-life of one year. After four years how much radioactive material will be left...0g, 1/2g, or 1/4g?

None of the above. The answer one-half to the fourth power.

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