The sun is best described a. a star that is below average in size. b. a star that is above average in size. c. a star that has exploded. d. an average-sized star.

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.