Question

a steam engine delivers 5.4×108 J of work per minute and services 3.6×109 J of heat per minute from its boiler
what is the efficiency of the engine
how much heat is wasted per minute

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Answer 1

$\textbf{\huge{hello friend}}$

$\textbf{\huge{answer}}$

work done by steam engine per minute ,W=5.4×108 j

heat supplied from the boiler , H=3.6×109 J

efficiency of the engine =output energy /input energy

n=W/H =5.4×108/(3.6×109) =0.15

hence, the percentage of the efficiency of the engine is 15%

amount of heat wasted =3.6×109-5.4×108=30.6×108=3.06×109 J

Therefore the amount of heat wasted per minute is 3.06×109J

$\textbf{\huge{be brainly}}$

Answer 2

Answer:

Not sure did not understand