Aclassmate states that continental drift could not be possible because it would take far too much force to move tectonic plates. describe the hypotheses
scientists use to explain the movement of tectonic plates. why hypothesis do many scientists think may explain the great force needed to move plates?

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)