Two large charged plates of charge density 49C/m face each other at a separation of 2 mm. Choose coordinate ax so that both plates are parallel to the xy plane, with the negatively charged plate located at z = 0 and the positively charged plate at z = +2 mm. Define potential so that potential at z = 0 is zero (V(z = 0) = 0). Find the electric potential at following values of z: Potential at z = -2mm: OV Potential at z = +1.8mm: 9.954. +1.8mm: 9.954 10 v Potential at z = +2mm: 1.106 10-8 V Potential at z = +7.2mm: 3.9816 108 V An electron is released from rest at the negative plate. With what speed will it strike the positive plate? 4879 13