What is one way that nuclear fusion differs from nuclear fission? A. Nuclear fusion requires very high pressures and temperatures.
B. Nuclear fusion occurs spontaneously on Earth.
C. Nuclear fusion is used in power plants to produce electricity.
D. Nuclear fusion is used to power aircraft carriers.

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)