An engine that operates at the maximum efficiency possible takes in 1.0MJ of heat at 327 degrees C and . . .?

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exhausts waste heat at 127 degrees C. How much work does it perform?

2006-06-21 06:02:40 · 3 answers · asked by jlynn 1 in Science & Mathematics ➔ Physics

By Carnot's rule

1-(t/T) = w/Q

or w = 1-400/600 MJ = 1/3 MJ

2006-06-21 06:07:15 · answer #1 · answered by ag_iitkgp 7 · 0⤊ 0⤋

efficiency of engine=1-t/T
=1-(127+273)/(327+273)
=1-400/600
=1/3
ehnce work done=1/3 *1MJ=1/3MJ

2006-06-21 14:17:25 · answer #2 · answered by the brain 1 · 0⤊ 0⤋

Is this a question from a textbook?Some professor on vacation no doubt!

2006-06-21 13:38:54 · answer #3 · answered by Balthor 5 · 0⤊ 0⤋