Gah.

Question: In particle accelerators, protons can be accelerated to speeds near that of light. Estimate the wavelength in nm of such a proton moving at

m/s. (mass of proton =

kg)

Here's the work I've done:

It says to use deBrogile's equation:

h stands for Planck's constant =

m for the mass =

kg

u for the speed =

m/s

Plugging in...

=

m

(from here , just divide by 10^(-9))
Conversion factors for nm:

And then I get wrong answers all over the place. I keep constantly getting new wrong answers and even on Yahoo they're giving me wrong answers. Totally don't know what I'm doing wrong.