Forces in a Three-Charge System p.21.2

Consider two point charges located on the x axis: one charge, q_1 = -18.5nC , is located at x_1 = -1.650m ; the second charge,

q_2 = 37.5nC , is at the origin (x=0.0000).  \epsilon_0 = 8.854\times 10^{-12}\;{\rm C^2/(N\cdot m^2)}

What is the net force exerted by these two charges on a third charge q_3 = 46.0nC placed between q_1 and q_2 at x_3 = -1.100m ?

Your answer may be positive or negative, depending on the direction of the force.


We first need to draw the diagram