A 15-loop circular coil 22 cm in diameter lies in the xy plane. The current in each loop of the coil is 7.6 A clockwise, and an external magnetic field B = ( 0.55 i + 0.60 j - 0.65 k ) T passes through the coil. (a) Determine the x, y, and z projections of the magnetic moment of the coil, (μ). (b) Determine the x, y, and z projections of the torque on the coil due to the external magnetic field. (c) Determine the potential energy U of the coil in the field (take U = 0 at θ = π/2 ). Express your answers using two significant figures.