An engine with an output of 249.0 W has an efficiency of 25.0 %. It works at 10.00 cycles/s. How much work is done in each cycle?
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Q: An engine with an output of 249.0 W has an efficiency of 25.0 %. It works at 10.00 cycles/s. How…
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Q: from a hot reservoir at
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A: Fhjknncc
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- Consider an engine with efficiency of 25%. How much must the temperature of the hot reservoir increase, so that the efficiency increases to 50%. The temperature of the cold reservoir remains at 5oCAn engine absorbs 1.71 kJ from a hot reservoir at 277°C and expels 1.22 kJ to a cold reservoir at 27°C in each cycle. (a) What is the engine's efficiency? %(b) How much work is done by the engine in each cycle? J(c) What is the power output of the engine if each cycle lasts 0.303 s?An engine does 3250 J of work and discards 5750 J of heat. Find the efficiency of this engine. Show the solution. Answer: E = 36.1% Max efficiency = 36.1% Actual efficiency = 37%
- A refrigerator has a coefficient of performance of 2.9. Hint If it requires 180 J of work per cycle, how much heat per cycle does the refrigerator remove from the cold reservoir? QL=QL= JJ How much heat per cycle is expelled into the hot reservoir? QH=QH= JAn engine that absorbs 480 J of heat per cycle has an efficiency of 00.34. How much work W does the engine do in a cycle?A certain refrigerator has a coefficient of performance of 1.8. If this refrigerator absorbs 2.5x10^4 J of heat from the cold reservoir during each cyle, how much mechanical work is needed to run this refrigerator for each cyle? how much heat does the refrigerator dump into the hot reservoir during each cycle?