marybethstansberry marybethstansberry

09-01-2021
Chemistry

contestada

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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Respuesta :

tianjhaedwards tianjhaedwards

09-01-2021

Answer:

a motor that requires no energy input once it is running

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Аноним Аноним

28-04-2021

Answer:

c

Explanation:

a p e x :)

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