Two positive charges q1 q2 = 2.0 C are located at x = 0, y = 0.3 m and x = 0, y = -0.3 m, respectively. A third point charge q3 = 4.0 C is located at x = 0.4 m, y = 0. a) Make a careful sketch of decent size that illustrates all force vectors with directions and magnitudes (does not have to be to scale, but representative for the problem). b. What is the resulting vector of the total force on charge q1 exerted by the other two charges using vector algebra?