A heat pump that is used to heat a house has a COP of 2.5. That is, the heat pump delivers 2.5 kWh of energy to the house for each 1 kWh of electricity it consumes. Is this a violation of the first law of thermodynamics? Explain.

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: Why is it thermodynamically incorrect to say that the refrigerator door must be  kept close because…

A: It is thermodynamically incorrect to say the refrigerator door must be kept close because coldness…

Q: Loki says life formation on Earth is a Miracle. Because the process does not obey second law of…

A: Second Law of Thermodynamics- It says that the entropy of a closed system increases over time or in…

Q: Consider the human body performing a strenuous exercise, such as lifting weights or riding a…

A: The first law of thermodynamics is valid in a human body in work. The internal energy stored in…

Q: What is the difference between thermodynamic and mechanical work? Should they show equal values in…

A: Explanation: Thermodynamic work is an energy transfer from the system to the surrounding or from the…

Q: A Styrofoam cup holding 145 g of hot water at 1.00 ✕ 102°C cools to room temperature, 25.0°C. What…

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Q: 1.Which process will cause the entropy of the universe to increase? A. melting of ice           C.…

A: In question 1  They are asking about the process which will cause the entropy of universe increase…

Q: A Styrofoam cup holding 135 g of hot water at 1.00 ✕ 102°C cools to room temperature, 27.0°C. What…

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Q: On a hot summer day, 4.00×106 J of heat transfer into a parked car takes place, increasing its…

A: Change in entropy is given by the formula: ∆S=QTwhere,∆S is change in entropyQ is heat transferT is…

Q: Which of the following statemtents is inconsistent with the second law of thermodynamics? a.…

A: We have to write about the Second law of thermodynamics and have to recognise which of the following…

Q: What is a Carnot heat engine? A) a heat engine that has the maximum possible efficiency   B) a heat…

A: A Carnot engine operating between two given temperatures has the greatest possible efficiency of any…

Q: What quantities appear in the first law of thermodynamics? a.) work, heat, thermal energy b.)…

A: Given, we need to check which quantities appear in first law of thermodynamics. Choose out of : work…

Q: 40) A certain heat engine extracts 1.30 kJ of heat from a hot temperature reservoir and discharges…

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Q: A thermodynamic system is taken from state A to state B to state C, and then back to A, as shown in…

A: Given, Ps=76.0Pa Vs=5.2m³

Q: When 0.50 kg of water at 0°C freezes, what is the change in entropy of the water? The latent heat of…

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Q: Which of the following is a reversible thermodynamic process? finite temperature change free…

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Q: Which of the following processes would be a violation of the second law of thermodynamics? (There…

A: The second law of thermodynamics states that the total entropy of an isolated system can never…

Q: A heat pump creates a heating effect of 32,000 Btu/h for a space maintained at 530 R while using 1.8…

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Q: Which of the following statemtents is inconsistent with the second law of thermodynamics? a. The…

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Q: Classify engines, pumps, and refrigerators as “possible” and “impossible" due to the first law of…

A: Given data: The useful work is: W = 1000 J The hot reservoir temperature is: TH = 600 K The cold…

Q: Why is it  incorrect to say that the refrigerator door must be  kept close because coldness (or cold…

A: The second  law of thermodynamics: The total entropy of both a system and its surrounding will never…

Q: Which of the following is false about the second law of thermodynamics?     It is not possible to…

A: 1. yes, it is not possible to take all heat to covert to work. Because according to law of…

Q: Can you give me an example of a thermodynamics system in your house. Is it an open system, closed…

A: Thermodynamics is one of the essential parts because it deals with the system of energy conservation…

Q: To heat 1 cup of water 1250 cm32 to make coffee, you place an electric heating element in the cup.…

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Q: Which of the following processes does not involve a change in entropy?A. An electric heater raises…

A: Entropy change is the measure of change in thermal energy per unit temperature of the system.

Q: Which of the following is NOT an example of the Entropy statement of the 2nd Law of Thermodynamics?…

A: Second law of thermodynamics: According to the this law the spontaneous process in the universe are…

Q: Which statement is not the second law of thermodynamics? -For a natural process, the entropy…

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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: Figure beside shows a p-V graph for a series of p(N m), thermodynamic processes, ABC. In process AB…

A: From conservation of energy, Q=U+W Given  Q1 = 160 j Q2 = 600 j Volume VB  =2×10-3 m3       Vc = 6 ×…

Q: A thermodynamic process occurs in which the entropy of a system changes by −6 J/K. According to the…

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Q: The second law of thermodynamics is a statement that entropy increases during a process. This…

A: Answer: any spontaneous process

Q: "In heating 250 cubic cm of water, you place an electric element in the cup. As the water…

A:

Q: The second law of thermodynamics is a statement that entropy increases during a process. This…

A: The statement from the second law of thermodynamics concludes that total entropy of a system either…

Q: How can we apply the first law of thermodynamics to heat engines, heatpumps, and refrigerators?

A: How can we apply the first law of thermodynamics to heat engines, heatpumps, and refrigerators.

Q: Using the first law of thermodynamics, explain why the total energy of an isolated system is always…

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Q: Based on the zeroth law of thermodynamics, explain why a can of soft drink remains at a constant…

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Q: A Styrofoam cup holding 142 g of hot water at 1.00 ✕ 102°C cools to room temperature, 21.0°C. What…

A: Here,  Q=mc∆T=142×10-3 kg4186 J/kg·°C100°C-21°C=46958.548J

Q: A thermodynamic process occurs in which the entropy of a system changes by -8 J/K. According to the…

A: We know that the entropy of the universe can not decrease . As the entropy of the system decreases…

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.