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Questions and Answers
Which of the following equations represents the conservation of energy in a system that involves heat and work?
Which of the following equations represents the conservation of energy in a system that involves heat and work?
- ∆Q= ∆U - ∆W
- ∆Q= ∆U + ∆W (correct)
- ∆Q= ∆U x ∆W
- ∆Q= ∆U / ∆W
What is the sign of ∆Q when heat enters the system?
What is the sign of ∆Q when heat enters the system?
- Zero
- Negative
- Depends on the system
- Positive (correct)
Which of the following is an example of the conservation of energy?
Which of the following is an example of the conservation of energy?
- Kinetic energy is converted into potential energy (correct)
- Sound energy is converted into light energy
- Heat energy is converted into kinetic energy
- Potential energy is converted into sound energy
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