Question

According to the law of conservation of energy, which statement must be true?

A. The total energy of a system can increase only if energy enters the system.

B. A system cannot take in additional matter.

C. The total energy in a system can only decrease over time.

D. Energy that is transferred cannot be transformed into a different type of energy.
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Answer 1

B. A system cannot take in additional matter.

Explanation: The total amount of energy in the universe remains constant, it can merely change from one form to another.

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