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    Exam 4: Heat and the Second Law of Thermodynamics: Why Is It Easier to Make an Omelet From an Egg Than to Make an Egg From an Omelet
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    Efficiency Is
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Efficiency Is

Question 21

Question 21

Multiple Choice

Efficiency is


A) the ratio of energy output to energy input.
B) the ratio of energy input to energy output.
C) the term used in describing heat energy.
D) a rating scale for combustion engines.
E) directly proportional to radiation.

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