Physics, 09.12.2020 20:00, bdjxoanbcisnkz

Efficiency is a measure of how much of the work put into a machine is converted into useful output work. Why can efficiency never reach 100%? A) Acceleration
B) Elasticity
C) Friction
D) Gravity

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Efficiency is a measure of how much of the work put into a machine is converted into useful output w...