A diesel engine has efficiency 0.180. (a) In order for this engine to do 1.24 * 10^4 J of work, how many joules of heat must it take in? (b) How many joules of this heat is discarded?
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A diesel engine has efficiency 0.180. (a) In order for this engine
to do 1.24 * 10^4 J of work, how many joules of heat must it take
in? (b) How many joules of this heat is discarded?
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- The engine of a large ship does 1.90 ✕ 108 J of work with an efficiency of 4.05% (a) How much heat transfer (in J) occurs to the environment? (b) How many barrels of fuel are consumed, if each barrel produces 6.00 ✕ 109 J of heat transfer when burned?A certain heat engine does 9.5 kJ of work and 8.00 kJ heat transfer occurs to the environment in a cyclical process. (a) What was the heat transfer (in kJ) into this engine? kJ (b) What was the engine's efficiency (in percent)? %A heat engine uses a heat source at 530 ∘C and has an ideal (Carnot) efficiency of 28 % . To increase the ideal efficiency to 43 % , what must be the temperature of the heat source?
- A heat engine is being designed to have a Carnot efficiency of 60% when operating between two heat reservoirs. (a) If the temperature of the cold reservoir is 20°C, what must be the temperature of the hot reservoir? °C (b) Can the actual efficiency of the engine be equal to 60%? O Yes O No Explain your answer.In each cycle of its operation, a heat engine expels 2 400 J of energy and performs 1 800 J of mechanical work. (a) How much thermal energy must be added to the engine in each cycle? (b) Find the thermal efficiency of the engine.A heat engine produces 2000 J of work while operating between 210 degrees Celsius and 35 degrees Celsius. How much heat (in J) is withdrawn from the hot source to produce this much of work? (Format of final answer should be 1.00x10^2) and Calculate the efficiency of the engine (in percent).