Question: Two 1.5 cm -diameter disks face each other, 2.0 mm apart. They are charged to 9.0 nC . Part A: What is the electric field strength between the disks? Part B: A proton is shot from the negative disk toward the positive disk. What launch speed must the proton have to just barely reach the positive disk? The response must be typed, single spaced, must be in times new roman font (size 12) and must follow the APA format.