Two small insulating spheres with radius 9.00102 are separated by a large center-to-center distance of 0. One sphere is negatively charged, with net...

Two small insulating spheres with radius 9.00×10−2 are separated by a large center-to-center distance of 0.520 . One sphere is negatively charged, with net charge -2.40 , and the other sphere is positively charged, with net charge 3.20 . The charge is uniformly distributed within the volume of each sphere.