A hollow, conducting sphere inner radius ra= 18cm and outer radius rb=24cm has a charge of -3.7n C is placed on the conducter. At the center of the sphere and insulated from the sphere is a point charge Q= +6.3nC
A) Determine the electric Field vector at 21cm measured from the center of the sphere?
B) Determine the electric field vector at 17cm measured from the center of the sphere?
C) Dtermine the surface charge densities on the inner and outer surfaces?