A charge of +10 mC is at (+3 m, 0m) on the x-axis and a charge of +10 mC is at (-3 m,0 m).
a. Determine the work required to assemble this charge distribution.
b. Find the magnitude of the electric field at a point (0,+3m) on the y-axis.
c. A charge q = +1.0 mC is placed at this point. Find the magnitude of the force on the charge