Three charged particles are fixed to an x axis: Particle 1 of charge q1 = 2.1e-8 C is at position x=20 cm and particle 2 of charge q2 = 2.00q1 is at position x = 30 cm, particle 3 of charge q3 = -4.00q1 is at position x = 70 cm. At what coordinate on the axis (other than infinity) is the net electric field produced by the three particles equal to zero? There are actually two answers here. Enter the one for which x>0