1. The problem statement, all variables and given/known data An electron gun (applied voltage of 3000 volts) is emitting electrons. THe electrons enter a region of constant magnetic field (B=.025 Tesla.) The magnetic field is perpendicular to the velocity of the beam. 2. Relevant equations W=Q(Delta V) = F*d V=F/eB 3. The attempt at a solution -1.6X10^-19 C (3000 (N*m/C)) = F*d -4.8 x 10^-16 = F*d I'm lost as to how to eliminate d. I'm almost positive it doesn't drop out due to the dot product, but I need to get rid of it to find F and no distance between the gun and the field is given. There's two more parts to this problem that I know how to do, my problem is I need the velocity for both those parts. So if I can be nudged in the proper direction of how to eliminate d so I can find force, that'd be great.