Particles 1 and 2 are fixed in place on an x axis, at a separation of L = 8.00cm. Their charges are q1 = + e and q2 = - 27e.Particle 3 with charge q3 = + 4e is to be placed on the line between particles 1 and 2, so that they produce a net electrostatic force F3net on it.
(a) At what coordinate should particle 3 be placed to minimize the magnitude of that force?
(b) What is that minimum magnitude?