1. The problem statement, all variables and given/known data A + q = 5 pC charge is uniformly distributed on a non-conducting sphere of radius a= 5 cm , which is placed in the center of a spherical conducting shell of inner radius b = 10 cm and outer radius c = 12 cm. The outer conducting shell is charged with a -q charge. Determine: 1) the charges on the inner and outer surfaces of the shell; 2) the electric field (module, direction) everywhere; 3) the electrostatic potential on the external surface of the conducting shell (r = c), on the internal surface of the shell (r = b) and on the outer surface of the internal sphere of radius a (r = a). Suppose now to replace the inner sphere with a spherical conductor of radius a charged with the same + q charge: 4) Which of the previous answers will change and how? 5) Determine the potential everywhere; 6) Determine the capacitance of the spherical capacitor formed from the internal conducting sphere of radius a and the outer conducting shell; 7) If a proton (m = 1.67·10-27 Kg) starts from rest from the spherical conductor of radius a, which will be its speed when it hit the inner surface of the outer spherical shell? 2. Relevant equations / 3. The attempt at a solution So, I would like to know if my attempt to solve the problem is correct, and how can I continue it in the parts I didn't manage to solve... Thank you!