In an experiment studying classical conditioning, a tone sounds and 5 seconds later a mild skin shock is delivered to a participant. The skin shock results in a stress response consisting of a temporary increase in heart rate. This process is repeated once every five minutes. After a number of trials, the participant demonstrates an elevated heart rate when the tone sounds and before the shock is actually delivered. Within the context of this example, what is the UR

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.