a. The potential of a charged conductor is 300 V. What is the minimum speed that an electron must have in order to fly away from the surface of a conductor to an infinitely far distance from it?
b. The proton at a great distance from the conductor had a velocity of 108 cm/s. The conductor potential is −10 CGS. The proton's trajectory ends at the surface of the conductor. What velocity did the proton have near the surface?