5. Consider a spherical shell of radius R and uniform surface charge distribution co. (a) given the two unit vectors in space (spherical coordinates) r = sin 0 cos o i + sin 0 sin $ 3 + cos 0 k p' = sin 0' cos d' i + sin 0' sing' 3 + cose k show that r . r' = cosy = sin 0 sin 0 cos(6 - 6 ) + costcos' = fl Costs his potential and the electric field at any point F = (x, y, 2) in space ca