What is the Carnot efficiency (in percent) of a heat engine operating between the temperatures of 395°C (668 K) and 170°C (443 K)?
Q: In many refrigeration systems, the working fluid is pressurized in order to raise its temperature.…
A: Given that: Initial pressure (P1) = 140 kPa Final pressure (P2) = 1200 kPa Isentropic efficiency…
Q: a) A heat engine operates at a 40% efficiency. The heat input is 20,000 J. How much work does this…
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: The heat engine shown in the figure uses 2.0 mol of a monatomic gas as the working substance.…
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Q: Problem 4: A freezer has a coefficient of performance of 3.5. You place 0.25 kg of water at 33°C in…
A: GivenC.O.P=3.5 Mass of water, m=0.25 kgInitial Temperature of water, Ti=33°CFinal temperature of…
Q: 100 mL of water at 20.0 °C is placed in the freezer compartment of a refrigerator with a coefficient…
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Q: What is Carnot efficiency Of a heat engine operating between the temperatures of 153°C And 19°C Give…
A: Carnot efficiency η=1-TCTH
Q: An ideal gas follows the thermodynamic path shown in the figure. From "A" to "B" the process is at…
A: Solution: Step I : Given, @ AB =140KJ @CD =-200KJ (hut…
Q: The ice maker inside a refrigerator makes ice cubes at 0.0°C from water that is at 17.2°C when it…
A: Given data The temperature of the water is Tw=17.2°C. The temperature of the ice is Ti=0°C. The…
Q: A container with 41 g of a certain liquid (c = 4171 J/kg · °C, Lv=2224 kJ/kg) at 22 °C is heated up…
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Q: An engine absorbed 865,500 3 of energy from a reservoir that had a temperature of 539 K and expelled…
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Q: What is its coefficient of performance?
A: Given: Temperature of the refrigerator is -10.5∘C and the heat of the other environment is 60.0∘C…
Q: p (atm) Pmax 2 3 1 1 Isotherm V (cm 600 0+ 200 400
A: Take 1 mol of ideal monoatomic gas. Calculate isothermal work. W12=RT1lnV2V1=8.314 J/K.mol * 300…
Q: During a high fever, a 55.0 kg patient’s normal metabolism increases by 11.2%. This results in an…
A: Given that:m=55.0 kgMetabolism with fever is 11.2% greater. H=20.0 mAt normal, Qc=120 kJ
Q: A heat engine absorbs 2500 J of heat at 250°C and expels 2000 J at a temperature of 50°C. The change…
A: Given: Heat absorbed at T1=250°C is Q1=2500 J Heat expelled at T2=50°C is Q2=2000 J
Q: An engine absorbed 780,600 J of energy from a reservoir that had a temperature of 714 K and expelled…
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Q: If the temperature inside the fridge is 35°F and the temperature outside is 70°F what is the maximum…
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Q: A 53-kg mountain climber, starting from rest, climbs a vertical distance of 764 m. At the top, she…
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Q: If a carnot engine operates between 35 degrees celcius to 76 degrees celcius. What is its thermal…
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Q: An ideal gas undergoes an adiabatic process while doing 25 J of work. Delta E = zero. How much work…
A: ideal gas undergoes an adiabatic process while doing 25 J of work. to find: work is done by the…
Q: An electrical power plant is constructed to extract energy from the ocean. It utilizes warm water at…
A: Solution: Given: t1 = temperature of warm water = 30oC t2 = temperature of cold water = 4.1oC η1 =…
Q: A refrigerator is rated at 370 Watt. What is the maximum amount of heat it can remove in 1 min if…
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Q: If an engine operates between 269°C and 26°C, what is its maximum thermodynamic efficiency (as a…
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Q: A Carnot's refrigerator takes heat from water at 0°C and discards it to a room at 27°C. If 1 kg of…
A: The objective of the question is to find out the amount of heat discarded to the room, the work done…
Q: A steam engine is operating at its theoretical maximum efficiency of 48%. If the waste heat has a…
A: Given data: The maximum efficiency is η=48% The temperature of the waste heat is T1=31°C+273=304 K…
Q: An engineer designs a heat engine using flat-plate solar collectors. The collector deliver heat at…
A: Temperature of hot reservoir T1=720C Temperature of cold reservoir T2=330C
Q: On a cold day, 17400 J of heat leaks out of a house. The inside temperature is 24.0° C, and the…
A: Given Data: The amount of heat leaks is, Q=17400 J The inside temperature of the house is, Th=24°C…
Q: A Carnot engine takes in heat from a reservoir at 460°C and releases heat to a lower-temperature…
A: Given, Hot reservoir temperature, Th=4600 C=733.15 K, and cold reservoir temperature, Tc=1400…
Q: An engine is design to run at 72% of Carnot engine efficiency with high and low temperature of 798 K…
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- An ice cube at 0.0°C is slowly melting. What is the change in the ice cube’s entropy for each 5.80 g of ice that melts? Latent heat of fusion of ice is 333.7 J/g.Combustion gases enter an adiabatic gas turbine at 1540F and 120 psia and leave at 60 psia with a low velocity. Treating the combustion gases as air and assuming an isentropic efficiency of 82 percent, determine the work output of the turbine.Steam engines have boilers operating at 500K. The energy from a burning fuel converts water into steam and this steam then moves the piston. the temperature of the cold reservoir from the outside air is around 300K and the efficiency of both engines is 40%. to be able to increase the efficiency of the two machines again by increasing Th or by reducing Tc. Identify what factors cause an increase in engine efficiency in both engines and which are more effective in increasing engine efficiency?
- Suppose a heat engine design makes a square on a PV diagram, using a monatomic gas. The high pressure is 3P and low pressure is P. The high volume is 3V and low volume is V. What is the efficiency of the heat engine?What is the maximum theoretical efficiency possible for an engine operating between 100°C and 400°C?A Carnot engine uses hydrogen as its medium. The volumes at the beginning and end of the reversible adiabatic expansion process are 1.0 ft^3 and 2.5 ft^3, respectively. Find the thermal efficiency