In fig. 30-33, a circular loop of wire in diameter (seen edge-on) is placed with its normal at an angle with the direction of a uniform magnetic field of magnitude . the loop is then rotated such that rotates in a cone about the field direction at the rate ; angle remains unchanged during the process. what is the emf induced in the loop?

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)