Exam-style question
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What does the principle of conservation of energy state?.
- A.Energy cannot be created or destroyed, only transformed.
- B.Energy can be created from nothing.
- C.Energy is always lost in mechanical systems.
- D.Energy can only be transferred, not transformed.
Model answer
What a good answer should say
- Energy cannot be created or destroyed, only transformed.
Explanation
Why this works
The principle of conservation of energy states that the total energy in a closed system remains constant. Energy can change forms, but it cannot be created or destroyed.
Common mistake
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