Physics

Problem

A sample has an initial activity

A_0 = 5.0\,\text{MBq}

and a half-life of

10\,\text{h}

. Calculate the total number of disintegrations that occur during the first

6\,\text{h}

. a)

1.1\times10^{11}

8.8\times10^{10}

6.9\times10^{10}

4.4\times10^{10}