Dane is holding an 8 kilogram box 2 metres above the ground. how much energy is in the box's gravitational potential energy store? assume dane is on earth, where g = 10 n/kg.

Why is there friction between objects

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.

Ascientific blank must be testable and capable of being proven false?