The Most Energy- Efficient Form of Transportation in the Animal

question 59

Multiple Choice

The most energy- efficient form of transportation in the animal kingdom is a human on a bicycle. A basic physics principle that helps explain the bicycle's high efficiency [relative to other technologies for human transportation] is

• A) the second law of thermodynamics.
• B) the work- energy principle.
• C) the law of gravity.
• D) the electromagnetic force law.
• E) the law of conservation of energy.

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