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AmaniseleeG
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a heat engine produces 8200 j of heat while performing 3200 of useful work. what is the efficiency of this engine? (i'm doing something wrong.)

Verified Answer :

MonsieurPengu

So E u(seful) is 3200 J and E l(oss) is 8200 J. E t(otal) is thus 11400 J. For the efficiency you do E u/ E t so 3200/11 400= 0.28 or 28%

aksnkj

The efficiency of this engine is 28.07%.

Given information:

The heat produced (loss) by the engine is \(h_l=8200\) J.

The useful work (work done) by the engine is \(W=3200\) J.

By the conservation of energy, the total energy supplied by the engine will be,

\(H=h_l+W\\H=8200+3200\\H=11400\rm\; J\)

Now, efficiency is the ratio of useful work and the total energy supplied by the engine.

So, the efficiency can be calculated as,

\(\eta=\dfrac{W}{H}\\\eta=\dfrac{3200}{11400}\\\eta=0.2807=28.07\%\)

Therefore, the efficiency of this engine is 28.07%.

For more details, refer to the link:

https://brainly.com/question/2676954