Here is the problem: Two charges are fixed on the x axis: one with a charge q1=5.00*10^-6 C at x1=-1.00m and the other with a charge of q2=3.00*10^-6 C at x2=1.50m. Find the force on a charge q=-5.00 *10^-6C placed at the origin (x=0).
***What are the magnitudes of the three charges q,q1...
Yes, I am. I know how to use the law to find the magnitude of the Forces created by the electric charges, but I can't figure out how to find magnitides of the charges themselves!