1. The problem statement, all variables and given/known data How many orders of magnitude smaller is the average drift velocity of a hole than the RMS thermal velocity of an electron moving in free space? (Use the law of equipartition to find the RMS thermal velocity of a free electron.) This is the last part of the problem, I have already found the drift velocity to be 2.5 x 10-4 2. Relevant equations vrms = √3kT/m This is for an ideal gas, so I'm not sure if it applies. 3. The attempt at a solution I know I need to find the energy of an electron, but I can't seem to find anything about how to calculate that in a vacuum, just how to find it based on pressure and temperature.