A closed system undergoes a process during which 600 kJ of heat is added to the system and the stored energy increases by 1800 kJ. Calculate the work don
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A closed system undergoes a process during which 600 kJ of heat is added to the system and the stored energy increases by 1800 kJ. Calculate the work done.
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- 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%As a gasoline engine is running, the amount of gasoline containing 15,000J of chemical potential energy is burned in 1 s. During that second, the engine does 3,000J of work. The burning gasoline has a temperature of about 2500 K. The waste heat from the engine flows into the air at about 300 K. What is the Carnot efficiency of a heat engine operating between these two temperatures?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 heat engine does 4.6 × 107 J of work when supplied 8.9 × 107 J. What is itsefficiency?8000 J of heat from a hot reservoir is put into a reversible (Carnot) heat engine whose hot and cold reservoirs are at 600 K and 150 K respectively. How much work does the engine do?A thermodynamic system undergoes a process where its internal energy increases by 200 J. During this time interval, 75J of heat is transferred from the system. How much energy in the form of work is transferred?
- A gas in a closed container is added with 20J of heat. The lid to the container is then lifted for 20 cm with 2.5 N of force. Calculate how much the energy added to the system.(a) How much heat transfer occurs to the environment by an electrical power station that uses 1.25×1014 J of heat transfer into the engine with an efficiency of 42.0%? (b) What is the ratio of heat transfer to the environment to work output? (c) How much work is done?Suppose a woman does 650 J of work and 9250 J of heat is transferred from her into the environment in the process. What is the change in her internal energy, in joules, assuming she does not consume any food? AU= What is her percent efficiency? n (%) = ||