A solid insulating sphere of radius 20 cm carries a net positive charge Q=10 uC uniformly distributed throughout its volume. A conducting spherical shell of inner radius b=40 cm and outer c=50 cm is concentric with the solid sphere and carries a net charge -20 uC. Assume that the system is in electrostatic equilibrium. Find the charge density in uC/m² on the outer surface of thw conducting shell.

A solid insulating sphere of radius 20 cm carries a net positive charge Q=10 uC uniformly distributed throughout its volume. A conducting spherical shell of inner radius b=40 cm and outer c=50 cm is concentric with the solid sphere and carries a net charge -20 uC. Assume that the system is in electrostatic equilibrium. Find the charge density in uC/m² on the outer surface of thw conducting shell.

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