The work output of a (50 %) efficient heat engine giving off (60 mathrm{~J}) of energy as
Question:
The work output of a \(50 \%\) efficient heat engine giving off \(60 \mathrm{~J}\) of energy as waste heat is
(a) \(50 \mathrm{~J}\)
(b) \(60 \mathrm{~J}\)
(c) \(45 \mathrm{~J}\)
(d) \(70 \mathrm{~J}\).
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