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20. Which of the following improves the efficiency of a machine? Cal. Reducing friction b. Adding more energy c. Running it faster Increasing friction
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20. Which of the following improves the efficiency of a machine?

Cal. Reducing friction
b. Adding more energy
c. Running it faster
Increasing friction

User Paradigmatic
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1 Answer

5 votes
Reducing friction increases efficiency.
User Mrhands
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