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Question - A slender, 470- g bar magnet 20.0 cm long has a magnetic moment of 5.60 A m². It is held at an angle of 45^o to the direction of a uniform magnetic field. When released, it begins to rotate about its center with an initial angular acceleration of 1.64 x 10³ rad/s².

Part A- What is the magnitude of the magnetic field?

I need guide to solve the above question.

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