Use correct number of significant digits. The tolerance is +-1 in the 3rd significant digit

Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of 0.0856 N when their center-to-center separation is 49.8 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 0.0394 N. Of the initial charges on the spheres, with a positive net charge, what was (a) the negative charge on one of them and (b) the positive charge on the other? (Assume the negative charge has smaller magnitude.) (a) Number Units C (b) Number Units C hs