3. A long charged wire is enclosed in and coaxial with a long charged cylindrical shell of radius 15.0 cm. The electric field is measured at a radius of 10.0 cm and found to be radially outwards with a magnitude of 8.50 kN/C. At a radius of 25.0 cm, the electric field was radially inwards with a magnitude of 2.50 kN/C. Determine the linear charge densities of the wire and the shell.
3. A long charged wire is enclosed in and coaxial with a long charged cylindrical shell of radius 15.0 cm. The electric field is measured at a radius of 10.0 cm and found to be radially outwards with a magnitude of 8.50 kN/C. At a radius of 25.0 cm, the electric field was radially inwards with a magnitude of 2.50 kN/C. Determine the linear charge densities of the wire and the shell.
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