Diesel engines are more efficient than gasoline engines. Which type of engine wold you expect to run hotter? Why?
Answer to relevant QuestionsOn a p–V diagram, sketch a cyclic process that consists of an isothermal expansion followed by an isobaric compression, and lastly followed by an isometric process. A fixed quantity of gas undergoes the reversible changes illustrated in the p–V diagram in Fig. 12.22. How much work is done in each process? One handred moles of a monatomic gas is com-pressed as shown on the p–V diagram in Fig. 12.23. (a) Is the work done by the gas (1) positive, (2) zero, or (3) negative? Why? (b) What is the work done by the gas? (c) What ...One mole of an ideal gas undergoes an isothermal compression at 0 oC, and 7.5 x 103 J of work is done in compressing the gas. (a) Will the entropy of the gas (1) increase, (2) remain the same, or (3) decrease? Why? (b) ...If an engine does 200 J of net work and exhausts 800 J of heat per cycle, what is its thermal efficiency?
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