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2 votes
Which of the following statements is true? Energy input is always greater than energy output. Magnetic fields are weakest at the poles of a magnet. Magnetic fields can push and pull protons. A change in acceleration is called velocity.

2 Answers

5 votes
The energy is a input and a output. 
answered
User CrazyMax
by
8.0k points
5 votes
Energy input is always greater than energy output.

Hope this helps
answered
User Vetuka
by
8.3k points
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