Three point charges are located on the positive x-axis of a coordinate system. Charge q1 = 2.0 nC is 2.0 cm from the origin, charge q2 = -4.0 nC is 4.0 cm from the origin and charge q3 = 4.0 nC located at the origin.
What is the direction of the net force exerted by the other two charges on charge q1 = 2.0 nC?