A5.5-hc point charge is located at x-0.9 m, y3.4 m, and a -3.9-hc point charge is located at x- 2.1 m, y 2.2 m (a) find the magnitude and direction of the electric field at x3.3 m, 0.9 m. magnitude direction kn/c (b) find the magnitude and direction of the force on a proton at x 3.3 m, y-0.9m