Physics
posted by P on .
There are two conducting concentric hollow spheres of outer radii R2 and R1 ( R2>R1 ). The thickness of the material of both spheres is d .
The inner sphere is negatively charged with charge density σ1, . The larger sphere is positively charged with charge density +σ2.
(a) What is the electric field (magnitude and direction) inside the inner sphere?
Direction: use units vectors in spherical coordinates ( r , Ѳ^ , ø^)
Magnitude: (Express your answer in terms of the following variables, if necessary R1, R2 , σ1 , σ2 , d , r and the constant epsilon_0 .
unanswered
What is the electric field (magnitude and direction) at distance from the center of the spheres for the following values of r :
(b) r<R1 but larger than R1d
Direction: use units vectors in spherical coordinates ( r , Ѳ^ ,ø^)
Magnitude: (Express your answer in terms of the following variables, if necessary R1 , R2 , σ1 , σ2 , d , r and the constant .
unanswered
(c) r>R1 but smaller than R2d
Direction: use units vectors in spherical coordinates ( r ,Ѳ^ , ø^ )
Magnitude: (Express your answer in terms of the following variables, if necessary , R1 , R2 ,σ1,σ2, d,r and the constant epsilon_0 .
unanswered
(d) r<R2 but larger than R2d
Direction: use units vectors in spherical coordinates ( r , Ѳ^, ø^ )
Magnitude: (Express your answer in terms of the following variables, if necessary R1 , R2 , σ1 , σ2 , d , r and the constant epsilon_0 .

Please give answer.