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A solid spherical ball of radius 4 meters has a charge of 8 nC. a) Calculate...

A solid spherical ball of radius 4 meters has a charge of 8 nC.

a) Calculate electric flux through the sphere at r = 2, r = 4, and r = 6 meters away from the center of the ball if it is a conducting sphere

b) Calculate the same things if it is an insulating sphere of uniform charge density.

c) Calculate the same things if it is an insulating sphere of non-uniform charge density, ρ = kr2

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