A spring has a natural length of 10 cm. If a 23-N force is required to keep it stretched to a length of 39 cm, how much work is required to stretch it from 10 cm to 22 cm

This is the substance(s) formed in a chemical reaction.

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.

Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 50 watts. find the work dine and the time it takes to do the work