unlabeled container of radioactive material has an activity of 78 decays/min. Four days later the activity is 63 decays/min. A. Determine the half-life of the material. T = ? days B. How many days after the activity is 78 decays/min will it reach 10 decays/min? t = ? days

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An unlabeled container of radioactive material has an activity of 78 decays/min. Four days later the activity is 63 decays/min.

A. Determine the half-life of the material. T = ? days

B. How many days after the activity is 78 decays/min will it reach 10 decays/min? t = ? days

 

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