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Question: the surface charge density on a long straight metallic pipe...

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The surface charge density on a long straight metallic pipe is σ. what is the electric field outside and inside the pipe? Assume the pipe has a diameter of 2a. (Enter the magnitudes. Use any variable or symbol stated above along with the following as necessary: r for the radial distance from the axis of the pipe and EO outside the pipe E(r) = | σ - inside the pipe Er)0

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