What is the de Brogile wavelength of an electon that strikes the back of the face of a TV screen at 1/10 the speed of light?

Answer 1

It is h/p where h is Planck's constant and p is the momentum of the electron.

Answer 2

I'm still not understand how to put it in the calculator, could you please explain?

Answer 3

h = 6.62606876*10^(-34) Js

mass = 9.10938185726*10^(-31) kg

speed = 0.1 c

c = 299792458 m/s

momentum is p = mass times speed

Answer 4

Thanks, Count Iblis!!!