A -5.0 ?C point charge is located at x = 4.0 m, y = –2.0 m and a 12-?C point

A -5.0 ?C point charge is located at x = 4.0 m, y = –2.0 m and a 12-?C point charge is located at x = 1.0 m, y = 2.0 m. (a) Find the magnitude and direction of the electric field at x = –1.0 m, y = 0. (b) Calculate the magnitude and the direction of the electric force on an electron that is placed at x = –1.0 m, y = 0.