Question: Suppose the electric field in some region is found to be E = kr3r, in spherical coordinates (k is some constant). (a) Find the charge

Suppose the electric field in some region is found to be E = kr3r, in spherical coordinates (k is some constant).

(a) Find the charge density p.

(b) Find the total charge contained in a sphere of radius R, centered at the origin. (Do it two different ways.)

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