Question

A certain rifle bullet has a mass of 7.17 g. What is the de Broglie wavelength of the bullet traveling at 790.6 meters per second?

Answer 1

`7.45 * 10^-40` m

Explanation:

# m = 7.17 g =717 * 10^5 kg#

`v=790.6 m*s^-1`

`h=6.63*10^-34 J*s^-1`

`lambda = h/(mv)`
`rArr lambda = (6.63*10^-34)/(717*10^5*790.6)`

`rArr lambda = 7.45*10^-40 m`