A sealed source contains nuclei of isotope Y

PHYSICS · Subjective · A Level · Physics · Nuclear physics · Nuclear physics

Problem

A sealed source contains

2.00\times10^{22}

nuclei of isotope Y, which undergoes beta decay with a half-life of

2.0\,\text{h}

. Each decay converts

0.0020\,\text{u}

of mass into energy. Calculate the total energy released by the sample in the first

6.0\,\text{h}