A sample of a radioactive isotope is placed near a Geiger counter, which is observed to register 160 counts per minute. Eight hours later, the detector counts at rate of 10 counts per minute. What is the half-life of the material?
A sample of a radioactive isotope is placed near a Geiger counter, which is observed to register 160 counts per minute. Eight hours later, the detector counts at rate of 10 counts per minute. What is the half-life of the material?
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