The diagram shows a generic heat pump operating between two temperature reservoi

Question

The diagram shows a generic heat pump operating between two temperature reservoirs. Here are the values for the variables in the graphic High-temperature thermal reservoir Low-temperature thermal reservoir TH = 6.20 102K TL 3.30 x 102 K QH9.510 x 103 J QL 1.230 x 103 J Answer the three questions, using three significant digits Heat engine Part A: How much work (W) is performed by this engine? Number W- Part B: What is the efficiency (e) of this engine? (Give your answer as a percent.) Number 0 Part C: Pick the name of the person who would have something to say about this engine. (Pick the answers to go in the appropriate blanks.) (Who?) Carnot O Hubble O Pascal (What?) perfectly plausible theortically possible, but practially impossible impossible - even in theory would say that this engine is O O O Charles O Guy-Lussac O Boyle

Explanation / Answer

A) Work done, W = Qh - Ql = (9.51 x 1000) - (1.23 x 1000) = 8.28 x 1000 J

B) Efficiency, n = W/Qh = 8.28/9.51 = 0.87 x 100 = 87%

C) Carnot would say that this engine is impossible even in theory.

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