Explain this question, please. There is nothing else, just the last questions, but I can see before answer the other one. . Bridging Problem: Magnetic

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Explain this question, please. There is nothing else, just the last questions, but I can see before answer the other one. .

Bridging Problem: Magnetic Torque on a Current-Carrying Ring 5 of 8 Review | Constants A circular ring with area 4.45 cm is carrying a current of 13.5 A. The ring, initially at rest, is immersed in a region of uniform magnetic field given by B = (1.15 10 T)(12 +3 j 4k). The ring is positioned initially such that its magnetic moment orientation is given by =(-0.8+0.67), where is the (positive) magnitude of the magnetic moment. (a) Find the initial magnetic torque on the ring. (b) The ring (which is free to rotate around one diameter) is released and turns through an angle of 90.0, at which point its magnetic moment orientation is given by = -k. Determine the f decrease in potential energy. (c) If the moment of inertia of the ring about a diameter is 6.50 10-7 kg m, determine the angular speed of the ring as it passes through the second position. Part B Determine the components of initial magnetic torque of the current-carrying ring. Express your answers in newton-meters separated by commas. View Available Hint(s) - VO Tx, Ty, Tz = Submit Part C ? N.m Find the change in potential energy from the first orientation of the ring to the second orientation. Express your answer with the appropriate units. View Available Hint(s) Units AU = Value Submit Part D ? Find the rotational kinetic energy of the ring when it is in the second orientation. Express your answer with the appropriate units. View Available Hint(s) Kf = Submit Value Units ?