Physics

Problem

For a certain radionuclide, a straight-line graph of

\ln N

(vertical axis) against time

t

(horizontal axis) has a slope of

-0.046\,\text{s}^{-1}

. What is the half-life of this radionuclide? a)

6.5\,\text{s}

15\,\text{s}

1.5\,\text{s}

21.7\,\text{s}