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The short answer is no. What you are talking about is sometimes referred to as a perfect machine. Because of friction and other factors, energy is always lost. The only example of 100% efficiency has been observed by the collisions of atoms in a supercollider, in which the atoms are broken down into a frictionless liquid. The frictionless liquid is at extreme temperature and is very short lived.

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15y ago
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11y ago

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However, many newer machines use much less water (only about a pail full) than older ones (fills drum to top) and most can run on cold water.

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Q: Is anything 100 percent efficient
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