Question: Point charge 2.0 uC is located at x= 0, y= 0.30m , point charge -2.0uC is located at x = 0 y = -0.30 . What are (a)the magnitude and (b)direction of the total electric force that these charges exert on a third point charge Q = 4.5uC at x = 0.40m , y= 0? please try to explain step by step.