NEED HELP FOR PART B!!!The highest theoretical efficiency of a gasoline engine,
ID: 2023920 • Letter: N
Question
NEED HELP FOR PART B!!!The highest theoretical efficiency of a gasoline engine, based on the Carnot cycle, is 0.300 or 30.0%.
(a) If this engine expels its gases into the atmosphere, which has a temperature of 2.95 102 K, what is the temperature in the cylinder immediately after combustion?
Th = 421.23
THIS ANSWER IS CORRECT
(b) If the heat engine absorbs 827 J of energy from the hot reservoir during each cycle, how much work can it perform in each cycle?
Weng =?
I KEEP GETTING 140.17 for the answer... but it was marked wrong...please let me know what I am doing wrong
thank you!
Explanation / Answer
a) ? = 1 - Tc/Th ? Th = Tc/(1 - ?) = 421°K b) W = ?*Qin = .30*827= 248.1 J
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