1. Real heat engines, like the gasoline engine in a car, always have some friction between their...

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Physics

1. Real heat engines, like the gasoline engine in a car, alwayshave some friction

between their moving parts, although lubricants keep thefriction to a minimum. Would a

heat engine with completely frictionless parts be 100%efficient? Why or why not? Does the

answer depend on whether or not the engine runs on the Carnotcycle? Again, why or why

not?

2.Some critics of biological evolution claim that it violatesthe second law of thermo-

dynamics, since evolution involves simple life forms developinginto more complex and more

highly ordered organisms. Explain why this is not a validarguement against evolution.

Answer & Explanation Solved by verified expert
4.4 Ratings (619 Votes)
1Heat engines transfer energy from a hot reservoir to a colderreservoir and during this process it converts some energy tomechanical workCarnots theorem states that all heat engines between two heatreservoirs are less efficient than a Carnot heat    See Answer
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