The erg is a unit of work in units of centimeters (cm), grams (g), and seconds (s), and 1 erg=1 g⋅cm2/s2 . recall that the si unit of force is the newton (n) and is equal to kg⋅m/s2 . you push an object 0.032 m by exerting 0.010 n of force. the work is the force times the distance.

how much work have you done, expressed in ergs?

3,200 ergs

32 ergs

0.32 ergs

0.00032 ergs

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.