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Q. A piece of steel rests on a wooden board, with frictional coefficient 0.40 between steel and wood. Find the maximum inclination angle for the board before the steel begins sliding.

Q. A circular wire loop of radius 13.0 cm carries a current of 3.66 A. It is placed so that the normal to its plane makes an angle of 34.8° with a uniform magnetic field of magnitude 9.70 T. (a) Calculate the magnitude of the magnetic dipole moment of the loop in amperes-square meters. (b) What is the magnitude of the torque acting on the loop?

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