Two 1.60 cm-diameter disks spaced 1.60 mm apart form a parallel-plate capacitor. The electric field between the disks is 5.00×10^5 V/m.
A- How much charge is on each disk? Answer in C.
B- An electron is launched from the negative plate. It strikes the positive plate at a speed of 2.20×10^7 m/s. What was the electron's speed as it left the negative plate? Answer in m/s.