An electron. initiallv at rest on the negative plate of a parallel plate apparatus, is accelerated through the hole of the positive plate. after which it maintains a constant speed in a uniform magnetic field of {115 T [out of the page]. The speed as it leaves the plates and enters the magnetic field is 6.5 x 10\" mfs. {a} Determine the voltage across the parallel plates. (hi Determine the initial magnetic force {magnitude and direction) experienced by the electron as it enters the magnetic field. (c) Determine the radius of the electron's path while it is in the uniform magnetic field. @ .15