which of these observations provide evidence that an energy change has occurred? choose 2 answers: a two…
which of these observations provide evidence that an energy change has occurred? choose 2 answers: a two objects interact without making a sound. b two repelling objects remain at rest. c an objects temperature changes. d an object slows down.
Answer
Brief Explanations:
- Option A: No sound doesn't mean no energy change, but it doesn't directly show energy change either.
- Option B: Repelling objects at rest have no obvious energy - related change in this state.
- Option C: A change in an object's temperature implies a change in its internal energy, which is evidence of an energy change.
- Option D: An object slowing down means a change in its kinetic energy, which is evidence of an energy change.
Answer:
C. An object’s temperature changes. D. An object slows down.