Two spheres with uniform surface charge density, first with a radius of 7.5cm and the second with a radius of 4.9cm , are separated by a center-to-center distance of 33 cm. the spheres have a combined charge of +55%u03bcc and repel one another with a force of 0.65n . assume q1> q2.
(a) what is the surface charge density on the first sphere? (c/m^2)
(b) what is the surface charge density on the second sphere? (c/m^2)