A 5.4-µC point charge is located at x = 0.9 m, y = 3.2 m, and a -3.9-µC point charge is located at x = 1.9 m, y = -2.3 m. (a) Find the magnitude and direction of the electric field at x = -3.2 m, y = 1.1 m.
magnitude: _____ kN/C
direction:_______ °
(b) Find the magnitude and direction of the force on a proton at x = -3.2 m, y = 1.1 m.
magnitude______ N
direction________ °