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Which of the following describes a perpetual-motion machine? A. A battery that contains one oxidized metal and one reduced metal B. A renewable energy source C. A motor that requires no energy input once
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15 votes
Which of the following describes a perpetual-motion machine?

A. A battery that contains one oxidized metal and one reduced metal
B. A renewable energy source
C. A motor that requires no energy input once it is running
D. An electric motor that is powered by an electromagnet
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User Lightandlight
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2 Answers

7 votes

Answer:

c

Step-by-step explanation:

a p e x :)

User Eric Grunzke
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5.1k points
13 votes

Answer:

a motor that requires no energy input once it is running

User Prasad Rane
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4.9k points
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