Biology
Biology, 29.08.2019 10:30, 222364

Efficiency is
a.
the percentage of energy lost to the surroundings as heat.
b.
the percentage of energy that is actually used to perform work.
c.
the entire amount of energy.
d.
the time it takes for half of the energy to be used.

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Do you know the correct answer?
Efficiency is
a.
the percentage of energy lost to the surroundings as heat.
b.

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