Recent content by WeeBey

I know that, at least in Quebec, prospects for materials engineers is considered good. I think, overall, the prospects in Canada and the US are similar. This is, in part, what drew me to the field. The problem is that I've since been told, almost unanimously, by the people around me that it's...

I recently sent in my application for the materials engineering program at McGill University. I was all set on this career path but doubt is beginning to set in. Friends and family have been telling me that materials engineering is a dead-end, that the jobs are few, and growth minuscule. They...

Hmm, So I first calculate velocity with: v = √2eΔV/m And then use: λ = h / mv That gives wavelength For momentum I use: p = mv Because their masses are different, I should get different results. So only the energy is the same for both?

Okay, so the rest mass for the photon is 0 and for the electron it is 9.11 x 10-31. Wavelength would be: E = hc / λ, or rather, λ = E / hc Momentum would be: p = h / λ I assume because their energies are the same, the results for wavelength and momentum will be equal for the electron and...

Isn't it: m = E / c2? Or is the rest mass of a photon always zero.

Homework Statement Compare a 2.2eV photon with a 2.2 eV electron in terms of energy, rest mass, speed, wavelength, and momentum The attempt at a solution So... E = (2.2eV) x (1.60 x 10-19 J/eV) = 3.52 x 10-19 J Wouldn't 3.52 x 10-19 J be the energy for both the photon and...