3.
Two 2.20-?C point charges are located on the x axis. One is at x
= 1.57 m, and the other at x = -1.57 m. Determine the magnitude of
the electric field on the y axis at y = 0.530 m. Answer in units of
N/C.
4.Three identical point charges of charge q = 7.3 ?C are placed
at the vertices (corners) of an equilateral triangle. If the side
of triangle is a = 5.2m, what is the magnitude,...