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 in the refrigerator? (ignore any thermal loses due to friction in the motor.) 3.239x10 You are correct. Previeus Tries Your recelpt no. is 160-5655 What is the Coefficient of Performance for the refrigerator? 3313 You are correct. Your receipt ne. is 160-4984 ) Erevious Tries Your refrigerator actually acts lke a heater in your kitchen Suppose you have a small electric space heater that has a power output of 2.2kw heat as the refrigerator produced while cooling your leftovers? 6.349 How long woud this heater have to run to produce the same amount of You are correct. Your receipt ne. is 160-7165 0 t takes electrioty to nun the motor on the refrigerator If your cost of electricty is 11 cents per kiowalhou how much does cost (n cents de not enter units) to coel your lunch dewn Previeus Tes Remember that it is the compressor motor using the electricity when the refrigerator is running Incorrect Tres 4/10 Previous Tries Submt Anawer Send Feedtbeck This discussion is closed.

the last question

Answer 1

4) The 3.2.39 X(0 x 2.77 Xlo kwh 3.239 xlo 8.19 X10 kwh 4 cot llX 8.99 XI0 98.29 X10Y 9.889X13