Question

1. In a H2 molecule there are two protons, and these have spin 1/2 ħ, that is, they are fermions. If we just look at the two protons, would you expect their spins to be parallel or anti parallel in the ground state of the H2 molecule?

2. Is there a type of viscosity that acts on holes in a semiconductor and gives them a terminal velocity in an electric field, or do holes just accelerate under the influence of such a field? If there is a terminal velocity, is it the same as that of the electrons?

3. The shorter the wavelength of a photon, the more the photon behaves like a particle. Why?

Answer 1