\(E=mc^2=(9.1*10^{-31}kg)(3*10^8m/s)^2=8.19*10^{-14}J\)

\(\lambda=\frac{hc}{E}=\frac{(6.63*10^{-34}J*s)(3*10^8m/s)}{8.19*10^{-19}J}=2.43*10^{-12}m\)

\(p=\frac{E}{c}=mc=(9.1*10^{-31}kg)(3*10^8m/s)=2.73*10^{-22}kg*m/s\)