You recently purchased and installed a 5000 BTU window AC unit in your apartment (HINT: Search the internet for the definition of BTU ratings for HVAC systems). At full capacity, it consumes 500 W of electricity.

(a) How much heat is being dumped out of your window? Btu/hr

(b) What is the COP of your AC unit?

(c) If your apartment is 800 ft², with 8 ft ceilings, and it is 90$^\circ$F when you turn on the AC, what will be the temperature after 10 minutes? (Assume the apartment is sealed, and ignore the radiative and convective effects from the furnishings. Make other reasonable assumptions as needed.)

$^\circ$F