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A hollow, conducting sphere with an outer radius of 0.260 mm and an inner radius of...

A hollow, conducting sphere with an outer radius of 0.260 mm and an inner radius of 0.200 mm has a uniform surface charge density of +6.57 ×× 10−6−6 C/m2C/m2. A charge of -0.700 μCμC is now introduced into the cavity inside the sphere.

What is the new charge density on the outside of the sphere?

Calculate the strength of the electric field just outside the sphere.

What is the electric flux through a spherical surface just inside the inner surface of the sphere?

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