Physics Electric Forces

Question 2:

a) Does q b feel any electric forces from q c , q d , or any of the surface charges induced by q c or q d ? Explain your reasoning.

b) How much total charge accumulates on each of the two surfaces of the cavities? How much total charge accumulates on the exterior surface? Explain your reasoning

c) Are the charge densities induced on the cavity surfaces uniform? Explain your reasoning.

d) If r is very large compared to the radius of the conductor, what is the approximate magnitude of the force felt on q d ?