Auniform electric field exists everywere in the x, y plane. this electric field has a magnitude of 4500 n/c and is directed in the positive x direction. a point charge -8.0 x 10^-9c is placed at the origin. determine the magnitude of the net electric field at (a.) x= -0.15 m, (b.) x= +0.15 m, and (c.) y= +0.15 m.