The space between two concentric conducting spherical shells of radii b = 2.30 cm and a = 1.10 cm is filled with a substance of dielectric constant k = 11.1. A potential difference V = 48.0 V is applied across the inner and outer shells. Determine (a) the capacitance of the device, (b) the free charge q on the inner shell, and (c) the charge q induced along the surface of the inner shell. (a) Number i Units Units (b) Number i (c) Number i Units