In physics lab, you measure three quantities: , , and . suppose that =1.5 kg , =0.4 m , and =3.9 kg/m . which of the mathematical combinations might be meaningful?

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.