The position vector of the point (−4,−2,1) P ( − 4 , − 2 , 1 ) with respect to (−4,−5,−1) R ( − 4 , − 5 , − 1 ) is

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.