1. The problem statement, all variables and given/known data Three point charges are located on the positive x-axis of a coordinate system. Charge q1 = 1.0 nC is 2.0 cm from the origin, charge q2 = -3.5 nC is 4.0 cm from the origin and charge q3 = 6.0 nC located at the origin. What is the net force ((a)magnitude and (b) direction) on charge q1 = 1.0 nCexerted by the other two charges? The online homework grader is marknig my answer for part a wrong. Can someone tell me whats wrong with my solution for part a? My work is in the attachment. 2. Relevant equations see attachment 3. The attempt at a solution see the attachment for my solution. The online homework grader is saying my answer is wrong.