Two positive charges q1 = q2 = 2. 0 μc are located at x = 0, y = 0. 30 m and x = 0, y = -0. 30 m, respectively. Third point charge q = 4. 0 μc is located at x = 0. 40 m, y = 0. What is the net force ((a)magnitude and (b)direction) on charge q1 exerted by the other two charges?.