Question: A certain source gives 2000 counts/s at time t = 0. Its half-life is 2 min. (a) What is the counting rate after 4 min?

A certain source gives 2000 counts/s at time t = 0. Its half-life is 2 min.

(a) What is the counting rate after 4 min?

(b) After 6 min?

(c) After 8 min?

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