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8 March, 04:05

Before dinner, Mr. Larsen pushes his daughter Sally on her swing for a few

minutes. The chain creaks and rubs against the metal hook at the top of the

bar as she swings through the air. After he stops pushing her, she slows down

and eventually stops. This example shows that:

A. energy is converted between forms with complete efficiency.

B. energy is created as Sally's dad begins to push her.

C. energy is destroyed by friction and vibration.

D. energy is transferred to friction and vibration as it is converted between different forms.

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Answers (1)
  1. 8 March, 04:40
    0
    no c is the answer of the questions
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