A point charge q1 of -1.6 C is at the origin and a second point charge q2 of +4.6 C is at the point x = 1.0 m, y = 2.0 m.
(i) Determine the x and y coordinates of the position at which an electron would be in the equilibrium.
(ii) Determine the x and y coordinates of the position at which a proton would be in symmetry.
(iii) Assume that the charges q1 and q2 were both twice. Determine how would your answers change?