The image below shows a single toy car rolling down a ramp. What observable feature(s) would you expect to be present if kinetic energy increases as the car rolls down the incline? multiple choice A. The toy car's speed would stay the same as it moved down the ramp.

B. The temperature of the car would decrease.

C. The toy car's speed would increase as it moved down the ramp.

D. Sound from the movement would be produced.

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)