what is true about the coal-powered steam locomotive? A- it is an example of an external combustion engine. B- it’s an example of an internal combustion engine.

Q: Find the work done by the engine cycle shown in the P-V diagram below. P(kPa) Q23 3 200 - Q12 Work…

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Q: A thermodynamic process occurs with a heat lost by the system. Does the entropy of the system…

A: No beacuse heat loss means increase in entropy according to second law  of thermodynamics.

Q: Which of the following ia/are not true about the second law of thermodynamics? a. it may provide an…

A: There are 4 laws of thermodynamics. They are given as under, (1) Zeroth law of thermodynamics (2)…

Q: Carnot engines can achieve the maximum theoretically possible efficiency for a heat engine.…

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Q: Two carnot engines are connected to each other. The second engine uses the heat flow out of the…

A: Since two carnot engines are attached in series. Heat released by the first engine will be absorbed…

Q: Calculate the work done in Joules by an engine during this reversible cycle. 9 p(atm) 2 8 7 6 5 4 3…

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Q: a student adds heat to .350 kg of pure ice at 0.0 degree Celcius until it is completely melted (but…

A: Given data: The mass of ice is m=0.35 kg. Temperature of ice is t=0oC+273=273 K. The temperature of…

Q: A Carnot heat engine receives heat from a thermal energy reservoir at 1150°C and has a thermal…

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Q: Which is the most effective way to increase the efficiency of a Carnot heat engine:     a)…

A: The efficiency of Carnot engine is defined as, η=1-T2T1 Let the temperature of high-temperature…

Q: Why is the Carnot cycle not a realistic model for steam power plants?

A: The Carnot cycle is not a realistic model for steam power plants due to the reasons given below.…

Q: A gasoline truck engine takes in 10,000 J of heat and delivers 2,000 J of mechanical work per cycle.…

A: Find the heat energy due to cold reservoir. QH=W+QCQC=QH-W=10,000 J-2,000 J=8000 J The entropy of…

Q: A  carnot engine is operating at a temperature of 300K and 500K. a)If 14000J of heat is absorbed by…

A: Given that temperature of heat and cold reservoir is 500K and 300K. And also given haeat absorbed by…

Q: A cycle is to be designed to have an “efficiency of 0.78 between the temperature reservoirs . If the…

A: Given a cycle is to be designed to have an “efficiency of 0.78 between the temperature reservoirs .…

Q: A carnot engine takes 2000 J of heat from a reservoir at 300 K, does some work, and discard some…

A: Given data: The high temperature reservoir is at TH=300 K. The lower temperature reservoir is at…

Q: A gasoline truck engine takes in 10,000 J of heat and delivers 2,000 J of mechanical work per cycle.…

A: From the figure, the engine is a Carnot engine. Let QH denotes the heat received from the higher…

Q: A Carnot engine draws heat energy from a hot temperature reservoir at 250oC and deposits heat energy…

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Q: Calculate the net work output of a heat engine following path ABCDA in the figure below, where V₁ =…

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Q: Give 3 examples of change in entropy of a system whether an increase or decrease in entropy in a…

A: Answer :- Entropy In simple way we can express as :-                      entropy is defined as…

Q: A heat engine does 7300 J of work per cycle while absorbing 12 to 0 J of heat energy from the hot…

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Q: c) Heat of 3.82 x 10^6 J as transferred to heat engine. Only 1.50x 10^5 J of work is done by this…

A: (i) Efficiency of the heat engine

Q: Explain how water’s entropy can decrease when it freezes without violating the second law of…

A: Total energy is always given as the sum of energy of the system and energy of the surroundings.

Q: The choices below are all efficiency ratings for heat engines. Which is a Carnot engine?

A: Efficiency of any Carnot engine is always less than 1.                                  η=1-T2T1<…

Q: 9. A neatly arranged bookshelf is very orderly system and has low entropy why is it safe to assume…

A: Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing…

Q: If energy is always conserved, never created or destroyed, then why do most of the machines in our…

A: SOlution: To explain If energy is always conserved, never created or destroyed, then why do most of…

Q: second law of thermodynamics states that the entropy of the universe is constantly increasing. Which…

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Q: Part 1: Five thousand kilocalories (5000 kcal) of heat flows from a high temperature reservoir at…

A: Entropy change is related to the amount of heat transferred at a temperature T as, ∆S=∆QT∆Q is the…

Q: The coefficient of performance of the heat pump used as a cooler (illustrated below) is x-3. What is…

A: Given: The coefficient of performance is 3.

Q: A Carnot engine has an efficiency ecarnot= 0.600. The temp. of the hot reservoir is 875 K. part a)…

A: Given:Carnot efficiency, ecarnot = 0.600Temperature of the hot reservoir, TH = 875 KHeat transferred…

Q: A heat engine operating between -10 degrees Celsius and 40 degrees Celsius achieves 50% of the ideal…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: A. Rank these engines on the basis of the change in entropy of the gas during the isothermal…

A: (A)The change in entropy of the system is,The change in entropy of the gas each phase of the cycle…

Q: A heat engine takes in 1800 J of heat from a high temperature reservoir and rejects 1200 J of heat…

A: Answer is Option (a) The expression used to work done by each cycle of engine is W=Qh-Qc Substitute…

Q: ) Estimate the maximum efficiency of an automobile engine that has a compression ratio of 8:1.0.…

A: Given data- Compression ratio is r=8:1.0    =8 And, γ=1.4

Q: The 2nd Law of Thermodynamics claims that the most efficient Carnot engine is achieved with the…

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Q: Q6. Which quantity needs to be decreased (TL or TH) to increase the efficiency of a Carnot engine…

A: efficiency = 1-(Tl/Th) where Tl is lower temperature  Th is higher temperature.

Q: in a single cycle, a heat engine extracts 8.00 kcal of heat from a hot reservoir and exhausts 5.00…

A: Given that, the amount of heat extracted from the hot reservoir is Qin=8kCal the amount of heat…

Q: What is the difference between spark-ignition and compression-ignition engines?

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Q: Why is the Diesel cycle more efficient (in thermodynamic terms) than the Otto cycle? a) Because the…

A: Diesel engines have more efficient than the otto cycle .

Q: Give your own examples where the entropy of a system decreases, and where it increases. Explain your…

A: Give your own examples where the entropy of a system decreases, and where it increases. Explain your…

First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.