The problem: Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of 0.158 N when their center-to-center separation is 63.2 cm. The spheres are then connected by a thin conducting wire. When the wire is removed, the spheres repel each other with an electrostatic force of 0.0322 N. Of the initial charges on the spheres, with a positive net charge, what was (a) the negative charge in coulombs on one of them and (b) the positive charge in coulombs on the other? So first I found the charges of the two spheres after the wire had been removed, since I knew that the charges must be equal. They both have a positive 1.196x10^-6 C charge. Now I am stuck trying to figure out the initial charges. Can anyone help me out? I used the Coloumbs Law equation F=(k|q1*q2|)/r^2 to find out what both charges multiply out to initially, which should be 7.02x10^-12 C. I have no idea where to go from there though.