Three point charges are arranged on a line. Charge 93 = +5.00 nC and is at the origin. Charge q2 = -3.50 nC and is at x = 5.00 cm. Charge q is at x = 2.50 cm For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Vector addition of electric forces on a line. Part A What is 91 (magnitude and sign) if the net force on q3 is zero? Express your answer in nanocoulombs. 91 = Submit Request Answer ? nC