Answer to Question #174536 in Atomic and Nuclear Physics for Charlotte

Question

A teacher decides to determine the count rate of a radioactive sample stored at school. Her reading show that there are 240 counts in a time of two minutes. Calculate the count rate of the radioactive sample, including a suitable unit.

Answer 1

The count rate $= \frac{240}{2 \times 60} = 2 \; counts/second$