Calculating de Broglie Wavelengths of Rb Atom and Electron

[Epif]

Homework Statement

What is the de Broglie wavelength of a 10 microKelvin Rb atom? A 5000K electron?

Homework Equations

\lambda=\frac{h}{p}
V=\sqrt{\frac{3KT}{m}}

The Attempt at a Solution

I used the velocity equation to find the velocity relating to temperature and mass. Then, as p=mv, I calculated the wavelength of the Rb atom to be 86.4nm. I just want to make sure my line of thinking is correct and that I can use a similar process for the electron.

Thanks!

 

[CaptainEvil]

Sounds good to me, just be careful if you're thinking about using that method for photons - you will go wrong!