## College Physics (4th Edition)

$p = 1.7\times 10^{-24}~kg~m/s$
We can find the momentum: $\lambda = \frac{h}{p}$ $p = \frac{h}{\lambda}$ $p = \frac{6.626\times 10^{-34}~J~s}{0.40\times 10^{-9}~m}$ $p = 1.7\times 10^{-24}~kg~m/s$