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OpenStudy (anonymous):
Can someone check my work. An engine absorbs 3000 J of heat, and exhaust 1200J of heat, how much mechanical work is done by the engine? What is its efficiency?
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OpenStudy (anonymous):
Here is my work. 3000j-1200j= 1800j
OpenStudy (anonymous):
after that I got stuck
OpenStudy (anonymous):
the efficiency is the work done / absorb energy
OpenStudy (anonymous):
so in ur case its going to be
OpenStudy (anonymous):
1800/3000
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OpenStudy (anonymous):
give ur answer for efficiency in %
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