1. Two positive charges are placed on the x-axis. A +10-7
Coulomb charge is at the origin and a +10-7 Coulomb charge is at x=
5 cm. a) Where is the electric field of the two charges exactly
zero? b) What is the electric field, magnitude and direction, at
the point x=2.5 cm and y=2.5 cm? Make a sketch as part of your
answer. c) Find the force, magnitude and direction, on a +10-8
Coulomb charge placed at the point...