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## Homework Statement

A hollow conducting sphere with an inner radius of 5 cm and an outer radius of 6 cm contains a smaller sphere of radius 3 cm, located symmetrically inside the hollow sphere. The electric field strength at 4 cm from the center is measured to be 2400 N/C pointing inward. The electric field strength at 20 cm from the center is determined at 300 N/C pointing away from the spheres. Use this information to determine: a. the charge on the inner sphere b. the charge on the hollow sphere

## Homework Equations

## The Attempt at a Solution

I know I have to use the gauss's law but I am not quite sure how to do it