Answered

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A heat engine does 200 J of work per cycle while exhausting 400 J of waste heat. what is the engine's thermal efficiency?

Sagot :

JustJordan00
The thermal efficiency of an engine is
N=W/Q
where
W is the work done by the engine
Q is the heat absorbed by the engine to do the work

In this problem, the work done by the engine is W=200 J, while the heat exhausted is Q=400 J, so the efficiency of the machine is
N=200J/400J=0.50=50%
I hope this helps!
Ritmeks

The engine thermal efficiency is 50%

The engine does 200 joules of work per cycle

It exhausts 400 j

The thermal efficiency can be calculated as follows

= 200/400

= 0.5 × 100

= 50 %

Hence the engine thermal efficiency is 50%

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