An insulating solid sphere of radius 10.0 cm carries a net charge of 7.5 no that is uniformly distributed throughout the volume of the sphere. A conducting spherical shell of radius 25.0 cm holding charge of -9.6 pC surrounds the sphere. The shell is surrounded by a conducting hollow sphere with inner radius of of 50 cm and outer radius of 60 cm and carries 9.6 pC charge. a) What is the electric field inside the sphere at r = 5 cm ? b) What is the E field in the space between the solid sphere and the shell at r = 15 cm? c) What is the E field at r = 30 cm? of) What is the E field at r = 55 cm? e) What is the E field at r = 70 cm? (k = 8.987 x109 Nm2/c2 ) (so = 8.85418782 x1012 C2-N-1-m2) conducting shell solid insulator 0' conducting hollow sphere