Question: A point charge q = 4.0 C is at the center of a spherical metallic shell with inner radius a = 3.5 m and outer

A point charge q = 4.0 C is at the center of a spherical metallic shell with inner radius a = 3.5 m and outer radius b = 4.0 m. The spherical shell has a net charge 0 = 5.0 C. Find the charge per unit area on the outer surface of the shell

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