Question

The radius of a proton is 10^-15 m. Express it in
1-nanometre
2-millimetre
3-centimetre

Answer 1

$$\begin{gathered} Dearstudent, \\ 1)1m={10}^{9}nm \\ {10}^{-15}m={10}^{-15}\times {10}^9={10}^{-6}nm \\ 2)1m=1000mm \\ {10}^{-15}m={10}^{-15}\times 1000={10}^{-12}mm \\ 3)1m=100cm \\ {10}^{-15}m={10}^{-15}\times 100={10}^{-13}cm \\ Regards \end{gathered}$$