## post assessment #29

$\lambda=\frac{h}{p}$

Maggie Doan 1I
Posts: 61
Joined: Fri Sep 28, 2018 12:24 am

### post assessment #29

If a proton and an electron have the same de Broglie wavelength do they have the same speed?

Posts: 60
Joined: Tue Nov 28, 2017 3:02 am

### Re: post assessment #29

Instead of speed, the particles would have the same momentum. Since the particles' mass are not equivalent, the electron will still move faster than the proton due to its extremely small weight.

Catherine Kim 3K
Posts: 31
Joined: Fri Sep 28, 2018 12:26 am

### Re: post assessment #29

No they will not have the same speed. They will have the same momentum. The formula of the de Broglie wavelength is λ = h/p. P = mass x velocity. An electron is lighter than a proton, so it was have a higher velocity/speed.

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