I really need help with parts C and D of this modified problem 37, please do not answer the 37 problem from the book, just the modified one from my teacher. I also posted my work so you can see what I've completed, but I am confident in A and B.

Modified 37: A) Draw a schematic diagram of a heat pump on a building. For reference, this is simply a refrigerator whose hot side is in the building and cold side is the outside. A heat pump refrigerates the outside - or "pumps" heat from outside (where it is already cold) to inside, and of course work must go into the machine to make it, er, work. B) Assume that the heat pump puts out 7.54MJ of heat each hour. Use the coefficient of performance (COP) given (3.80) to calculate the amount work and amount of heat Qc which must go into this machine. Hint: you must use "benefit/cost" to deduce the COP. (I get slightly under 2MJ) C) Compare this situation to the energy you must pay for to heat the building using baseboard heat (all from electrical work) and thus explain why a heat pump is a good idea. D) If the temperature outside is 5.0C and the temperature inside the building is 22.0CAND the heat pump operates at Carnot efficiency, find the work needed to produce 7.54MJ of heat for the building. Hint: Entropy change is zero. (between 0.6 and 0.8MJ ) consumed? -37 A heat pump is used to heat a building. The outside temperature is 5.0C, and the temperature inside the building is to be maintained at 22C. The pump's coefficient of performance is 3.8 , and the heat pump delivers 7.54MJ as heat to the building each hour. If the heat pump is a Carnot engine working in reverse, at what rate must work be done to run it? Ssm [cTQccop=WQh=W2.54MJ=3.80=1984210.526J1.98MJW=QHQC1.98MJ=7.54MJQCQC=7.54MJ1.98MJQC=5555789.474JQc=5.55MJ