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A cylindrical distribution of charge ρ =α/√r where α = 2 µC/m^5/2 extends from 0 cm to
8.7 cm . Concentric with this is a dielectric shell with 3.96 of inner radius 17.4 cm and outer radius 25 cm . What is the electric field at 13.7 cm ? 21.4 cm? 35.3 cm?
Answer in units of V/m.

What is the surface charge density on the inner surface of the dielectric?
Answer in units of C/m^2.

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