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2. Two reversible Carnot heat engines operate in series between a source at 427°C and a sink at 17°C. If the engines have equ

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efficiency is also given by in terms of heat- n QH-QL CH Ni QH1 - 011 VH1 THI 1- TL 1- OLI 1- Thi THI SHI OLI 9H4 TL THE QHI

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