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02-01-2023
Physics

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A long, straight solenoid with a cross-sectional area of 8. 00cm2 is wound with 90turns of wire per centimeter, and the windings carry a current of 0. 350a. a second winding of 12 turns encircles the solenoid at its center. the current in the solenoid is turned off such that the magnetic field of the solenoid becomes zero in 0. 0400s.

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