A man has a mass of 66 kg on the Earth. What is his weight?

Explain vector addition, triangle method and parallelogram method

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.

Does heating a metal wire increase or decrease its electrical resistance? why?