Two 1.70 centimeter diameter disks spaced 1.80 millimeter apart from a parallel-plate capacitor. The electric field between the disks is 4.70 × 105 V/m.
A) Determine the voltage across the capacitor?
B) An electron is launched from the negative plate. It strikes the positive plate at a speed of 2.50 ×107 m/s. Find the electron speed as it left the negative plate?