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Questions and Answers
Which of the following best describes perpetual motion?
Which of the following best describes perpetual motion?
- The motion of bodies that continues forever in an unperturbed system (correct)
- The motion of bodies that continues temporarily in a perturbed system
- The motion of bodies that continues forever in a perturbed system
- The motion of bodies that continues temporarily in an unperturbed system
What is a perpetual motion machine?
What is a perpetual motion machine?
- A machine that can do work temporarily with an external energy source
- A machine that can do work infinitely without an external energy source (correct)
- A machine that can do work temporarily without an external energy source
- A machine that can do work infinitely with an external energy source
Why is a perpetual motion machine impossible?
Why is a perpetual motion machine impossible?
- It would violate the first or second law of thermodynamics, or both (correct)
- It would violate the laws of motion
- It would violate the first law of thermodynamics
- It would violate the second law of thermodynamics
Do the laws of thermodynamics apply only to small systems?
Do the laws of thermodynamics apply only to small systems?
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Why will machines that extract energy from finite sources not operate indefinitely?
Why will machines that extract energy from finite sources not operate indefinitely?
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