Apsychologist was interest in developing a test that would predict the success of prospective lawyers. she selected a random sample of lawyers listed in who’s who, under the assumption that they would be "successful" lawyers. she then contacted them by means of a mail questionnaire that contained several hundred questions. the results were analyzed and a profile of successful lawyers was compiled. the questionnaire was given to a group of prospective law students, and those student whose scores were significantly divergent from the successful lawyer group were advised not to pursue a law career.

Aheat pump with refrigerant-134a as the working fluid is used to keep a space at 25°c by absorbing heat from geothermal water that enters the evaporator at 500c at a rate of 0.065 kg/s and leaves at 40°c. the refrigerant enters the evaporator at 20°c with a quality of 23 percent and leaves at the inlet pressure as saturated vapor. the refrigerant loses 300 w of heat to the surroundings as it flows through the compressor and the refrigerant leaves the compressor at 1.4 mpa at the same entropy as the inlet. determine: (a) the degrees of subcooling of the refrigerant in the condenser, b)-the mass flow rate of the refrigerant . (c) the heating load and the cop of the pump, and d)-the theoretical minimum power input to the compressor for the same heating load.