You place your lunch leftovers in the refrigerator. Suppose the refrigerator needs to remove 9.8700E+3 J of thermal energy from your lunch to cool it to the temperature of the inside of the refrigerator. In the meantime, this means the refrigerator produces 1.3702E+4 J of thermal energy that it expels into the kitchen as a result. What is the total work done by the compressor motor in the refrigerator?(Ignore any thermal loses due to friction in the motor.) 3.832×103 J You are correct.
What is the Coefficient of Performance for the refrigerator?
Your refrigerator actually acts like a heater in your kitchen. Suppose you have a small electric space heater that has a power output of 2.8kW. How long would this heater have to run to produce the same amount of heat as the refrigerator produced while cooling your leftovers?
It takes electricity to run the motor on the refrigerator. If your cost of electricity is 9 cents per kilowatt*hour, how much does it cost (in cents - do not enter units) to cool your lunch down?
You place your lunch leftovers in the refrigerator. Suppose the refrigerator needs to remove 9.8700E+3 J...
the last question Cooling Your Leftovers Due on Saturday, Dec 7 at 11 59 pm (EST) You place your lunch leftovers in the refrigerater Suppose the refrigerator needs te remove 1.0730+43 of thermal energy from your lunch to cool it to the temperature of the inside of the refrigerator. In the meantime, this means the refrigerator produces 1.3969E+4 3 of thermal energy that it expels inte the ktchen asa resut. What is the total work done by the compressor mator...
Suppose that a certain refrigerator is observed to remove 23 J of heat from its interior, while drawing 12 J of energy from the electric grid and exhausting 35 J of heat to the kitchen in which it sits. If the food inside the refrigerator is maintained at 2.85C and the room temperature of the kitchen stays at 62.85C, then at what fraction of this refrigerator's theoretical maximum possible coefficient of performance is its current operating coefficient of performance?