Podcast
Questions and Answers
What is an example of heat flow?
What is an example of heat flow?
- Boiling water cools surroundings (correct)
- Heat does not transfer between bodies
- Heat transfers from cold body to hot body
- Heat always transfers from hot body to cold body
According to the 2nd law of thermodynamics, what theoretical efficiency is never attained?
According to the 2nd law of thermodynamics, what theoretical efficiency is never attained?
- 75% efficiency
- 0% efficiency
- 100% efficiency (correct)
- 50% efficiency
If a coal-burning power plant can convert 1 ton of coal, containing 28,000 megajoules of chemical energy, into 7,000 MJ of electricity, what is the efficiency of the conversion?
If a coal-burning power plant can convert 1 ton of coal, containing 28,000 megajoules of chemical energy, into 7,000 MJ of electricity, what is the efficiency of the conversion?
- 25%
- 75%
- 50%
- 0.25% (correct)
In terms of quality, what type of energy is heat?
In terms of quality, what type of energy is heat?
What is happening to the entropy of the Universe over time?
What is happening to the entropy of the Universe over time?
What are some of the advantages and disadvantages of nuclear power?
What are some of the advantages and disadvantages of nuclear power?
What is the definition of potential energy?
What is the definition of potential energy?
According to the first law of thermodynamics, what can be done with energy?
According to the first law of thermodynamics, what can be done with energy?
What does the second law of thermodynamics state about entropy?
What does the second law of thermodynamics state about entropy?
What is the primary reason why gasoline is considered a high-quality energy source?
What is the primary reason why gasoline is considered a high-quality energy source?
Why are wood and example of a low-quality energy source?
Why are wood and example of a low-quality energy source?
In terms of heat flow, what is another statement of the 2nd law of thermodynamics?
In terms of heat flow, what is another statement of the 2nd law of thermodynamics?
Flashcards are hidden until you start studying
