Chapter 17, Problem 22P

Two point charges are placed on the x axis as follows: Charge q₁ = +4.00 nC is located at x = 0.200 m, and charge q₂ = −5.00 nC is at x = +0.400 m. What are the magnitude and direction of the net force exerted by these two charges on a third point charge q₃ = −0.600 nC placed at the origin?