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A solid sphere of radius 50.0 cm has a charge of 12.0 uC.  If the charge density...

A solid sphere of radius 50.0 cm has a charge of 12.0 uC.  If the charge density varies with radial distance according to the equation p=kr, where k is a constant:

A) find the electric field at 30.0 cm from the sphere's center.

B) find the electric field at 60.0 cm from the sphere's center.

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