A circular loop of wire 0.8 m in diameter is placed with its normal at an angle of 30° to the direction of a uniform 0.98 T magnetic field. The loop is wobbled so that its normal rotates in a cone about the field direction at the constant rate of 86.0 rev/min; the angle (30°) between the normal and the field direction remains unchanged during the process. What emf appears in the loop?