From what you said the charge from the second equation, I got q = -3.25e-6 and that is also not the correct answer. I don't need to be solving for force between any of the charges.
Any thing else?
Homework Statement
A point particle that has a charge of 14.5 µC is located at x = 0, y = 0 and a point particle that has a charge q is located at x = 11.6 cm, y = 0. The electric force on a point particle that has a charge of 5.8 µC at x = 23.2 cm, y = 0 is -(19.7) N ihat. Determine the...