Question

Need help, Calculate the wavelength of a proton with energy 2.45eV.

Answer 1

I cant get the write answer in meter!!!
Calculate the wavelength of a proton with energy 2.45eV.

Answer 2

did you use the deBroglie equation?

Answer 3

theres one specific for things moving really fast (near c) and ones that aren't

Answer 4

Yes but nothing good.
I came up with 5.05401530612e-07 but it's not right.
Would you please check it for me...

Answer 5

how did you do it?

Answer 6

E=hc/lamb
1ev=1.6*10^-19
Wavelength=hc/E

Answer 7

the first equation is for photons, you need to use
use: KE=mv^2
to find v, velocity then, the deBroglie eqn:

lambda = h/mv

Answer 8

Many thanks...
It worked out ;)

Answer 9

good stuff, no prob !