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Please solve: 1. A long, current-carrying solenoid with an air core has 2200 turns per meter...

Please solve:

1. A long, current-carrying solenoid with an air core has 2200 turns per meter of length and a radius of 0.0230 m. A coil of 180 turns is wrapped tightly around the outside of the solenoid, so it has virtually the same radius as the solenoid. What is the mutual inductance of this system?

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