The charges and coordinates of two charged particles held fixed in an xy plane are q1 = 2.39 μc, x1 = 4.92 cm, y1 = 0.657 cm and q2 = -5.83 μc, x2 = -1.86 cm, y2 = 1.69 cm. find the (a)magnitude and (b) direction of the electrostatic force on particle 2 due to particle 1. at what (c) x and (d) y coordinates should a third particle of charge q3 = 3.96 μc be placed such that the net electrostatic force on particle 2 due to particles 1 and 3 is zero?