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Why do all machines lose some energy while they operate?

Choose all that apply

They run out of fuel.
They radiate heat.
The moving parts create friction.
High pressure gases move the piston.

asked
User Andy  Gee
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8.6k points

2 Answers

6 votes
They radiate heat and the moving parts create friction
answered
User Samuele Pilleri
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7.7k points
1 vote
They radiate heat, and the moving parts create friction
answered
User JPNotADragon
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8.2k points