An inventor claims to have devised a cyclic engine which exchanges heat with reservoirs 25ºC and 250ºC, and which produces 0.45kJ of work for each kJ of heat extracted from the hot reservoir. Is the claim believable?

Q: A gasoline engine absorbs 2.9 kJ of heat and performs 0.7 kJ of mechanical work in each cycle. The…

A: Heat absorbed (Q)= 2.9 KJ = 2.9× 10³ J Work done (W)= 0.7 KJ = 0.7× 10³ J   We know that…

Q: A refrigerator has a coefficient of performance of (5.0x10^0). When removing (3.600x10^4) J from…

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Q: Suppose that a heat engine does 6000 J of work while the heat input is 9000 J. What is the…

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Q: A 45.0 kg flower pot falls from a height of 12.6 m and landing in a pool of water, where the energy…

A: The change in entropy be defined as, ∆S=∆QT           ........1 Where, ΔQ be defined as the change…

Q: When 1.70 ✕ 105 J of heat transfer occurs into a meat pie initially at 20.0°C, its entropy increases…

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Q: ) In one application of the Carnot engine, a high temperature was obtained at 327 C. The heat energy…

A: Given: Hot reservoir temperature, TH = 3270C In Kelvin, TH = 3270C=(273 + 327) K= 600K Cold…

Q: Calculate the Delta G value from the following data and state whether the process will be…

A: Temperature , T = 298 K  Change in entropy , ∆S = +9.50 J /K Heat of reaction ,∆H = -85 KJ To find =…

Q: An automobile engine has an the heat rejected by the engine. efficiency of 20% and produces 6000 J…

A: Given value--- efficiency = 20 percent.  Work = 6000 J. We need to find--- Find the heat rejected…

Q: The motor in a refrigerator has a power of 200W. If the freezing compartment is at 270 K and the…

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Q: A heat engine with 100% efficiency is only a theoretical possibility. Explain.

A: Given:  Efficiency = 100 %

Q: It is claimed that, while running through a whole number of cycles, a heat engine takes in 25 kJ of…

A: First law of thermodynamics or law of conservation of energy states that the total energy of an…

Q: Find the change in the total entropy when 0.1 kg. of liquid water at 10°C is placed in thermal…

A: Given data : mass of water, m  = 0.1 kg temperature of liquid water, Tw = 10 °C = 273 + 10 = 373…

Q: Suppose this engine is not reversible, and that only 457 J of work is done when 1050 J of heat is…

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Q: If the engine does 5.0 J of work per cycle, how much heat per cycledoes it absorb from the…

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Q: A steam engine absorbs 7.91×105J and expels4.99 × 105J in each cycle. Assume that all ofthe…

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Q: Calculate the maximum possible efficiency of a heat engine that uses surface lake water at 20.7°C as…

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Q: Let’s say that the Carnot engine takes 100 J of heat from a reservoir at 500 K, does some work, and…

A: temperature of hot reservoir = TH= 500K energy from hot reservoir = QH= 100J temperature of cold…

Q: The energy transferred by heat from an engine during one cycle is 500 J. How much energy  must be…

A: The heat transferred or rejected from the engine is, QR=500 J   The efficiency, η=30%=0.30

Q: When 1.60×105 J of heat transfer occurs into a meat pie initially at 20.0C, its entropy increases by…

A: Heat 1.6 x 105 J Initial temperature = 20 C Entropy increases = 480 J/K

Q: What is wrong with the claim that a cyclical heat engine does 4.00 kJ of work on an input of 24.0 kJ…

A: Energy conservation law states that Energy can never be created or destroyed, it can only be…

Q: a refrigerator removes heat from the cubicle at the rate of 20kj and ejects 24kj into a room per…

A: Given in question:   Heat removed from the cubicle per cycle(QR) = 20 KJ…

Q: would a 100% efficient engine violate the first law of thermodynamics? What about a workless…

A: would a 100% efficient engine violate the first law of thermodynamics? What about a workless…

Q: An engine is found to have an efficiency of 0.40. If it does 200 J of work per cycle, what are the…

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Q: You design an engine that takes in 26 kJ of heat at 720 K in each cycle and rejects heat at a…

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Q: Is it possible to construct a heat engine that creates no thermal pollution?

A: Heat engine is an engine that takes in energy as heat and partially converts it into other forms…

Q: An engine manufacturer claims that the engine they have developed will in each cycle take 100 J of…

A: In this given question, We have to check the given statement is true or not.

Q: Find the change in the total entropy when 0.1 kg. of liquid water at 100 C is placed in thermal…

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Q: A heat pump extracts 7.0 × 106 J of heat per hour from a well at 280 K and delivers its output heat…

A: write the equation for cofficient of performance of heat pump.Cop =QHWin =THTH  -TL…

Q: 4. (15.21) A heat engine does 9200 J of work per cycle while absorbing 25.0 kcal of heat from a…

A: Given: Work output = 9200 J  Work input = 25 Kcal                      = 25 × 4184 J…

Q: Consider an inefficient engine that draws 200 J of heat from a hot reservoir at 100o C, converts 48…

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Q: An engine with an efficiency of 0.34 absorbs 55 J from a heat reservoir in each cycle. If it…

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Q: To increase the efficiency of a Carnot engine, should the temperature of the hot reservoir be raised…

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Q: Can any other engine achieve efficiency more than the Carnot engine?

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Q: An inventor claims a new cyclic engine that uses organic grapejuice as its working material.…

A: heat absorbed, QH = 1250 J  temperature of hot reservoir, TH = 1010 K work, W = 1120J temperature of…

Q: Consider an engine with efficiency of 25%. How much must the temperature of the hot reservoir…

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Q: How much work is done by a gasoline engine that is 20 % efficient and loses 750 J to the cooling…

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Q: Consider a heat engine that uses reservoirs at 800.°C and 0.00 °C. Calculate the maximum possible…

A: The expression for the efficiency of the heat engine is given by,  η=1-T2T1×100 -----(1) Here, η is…

Q: In an ideal heat engine the cold sink is at 0∘C. If 10 kJ of heat is withdrawn from the hot source…

A: Temperature of cold sink = 0o C Heat withdrawn from the source = 10 kJ work done = 3 kJ

Q: Carnot engine whose low-temperature reservoir is at 17Chas an efficiency of 40%. By how much should…

A: Given:- T2 =17o C = 17 + 273 = 290 K n1 = 40% = 0.4 n2 = 50% = 0.5

Q: Calculate the maximum possible efficiency of a heat engine that uses surface lake water at 20.7°C as…

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Q: he remaining percent?

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Q: hat is the decrease in entropy of 25.0 g of water that ndenses on a bathroom mirror at a temperature…

A: Entropy change is the ratio of heat given to temperature

Q: What is the ideal efficiency of a heat engine that operates with its hot reservoir at 500 K and its…

A: The efficiency of the heat engine is given by  η= 1 - TcTH

Q: A Carnot engine whose high-temperature reservoir is at 400K has an efficiency of 30.0%. By how much…

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