If energy is always conserved, never created or destroyed, then why do most of the machines in our lives eventually stop working and have to be replaced?

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: All the following statements define the second law of thermodynamics except, a. processes that…

A: (a) Processes that involve the transfer or conversion of heat energy are irreversible. Because they…

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: An ice cube with a mass of 24.0 g at a temperature of -13°C is heated up until it is vaporized into…

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Q: Explain Reversible and Irreversible Processes?

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Q: You can't take warm water, turn it into ice, and use the heat from the water to run an engine. This…

A: The statement given is that you can't take warm water, turn it into ice, and use the heat from the…

Q: If a system (like that of a calorimeter) is not assumed to be adiabatic, how would it change the…

A: Here, we need to consider a non-adiabatic system (a calorimeter). Let us first understand the heat…

Q: Upon freezing, water becomes more orderly and its entropy decreases.  Explain why this process does…

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Q: The energy output of a heat pump is greater than the energy used to operate the pump. Why doesn’t…

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Q: Which of the following is not a statement or a consequence of the second law of thermodynamics?…

A: Let's check each options one by one. 1. The internal energy of an isolated system is constant. this…

Q: Explain the following simplified statements of the first and second laws of thermodynamics (a) First…

A: According to the first law of thermodynamics, energy can neither be created nor be destroyed. Here,…

Q: An ideal gas undergoes a process between two specified temperatures, first at constant pressure and…

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Q: Explain Thermodynamic Systems?

A: A thermodynamic system is defined by set of variables known as thermodynamic variables.…

Q: We ordinarily say that ΔU = 0 for an isothermal process. Does this assume no phase change takes…

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Q: In the first law of thermodynamics, why or why not a hypothetical machine is likely to be…

A: First law of thermodynamics is basically law of conservation of energy. According to first law of…

Q: Construct a table of all the possible combinations of numbers that can come up when you throw two…

A: The sample space (S) of the 2 dice is given as,

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: 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: Suppose that you put a hot object in thermal contact with a cold object and observe (much to your…

A: Introduction: According to the first law of thermodynamics, the total energy of a system remains…

Q: What does the Second Law of Thermodynamics say about how much work can be done by a heat engine?…

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Q: The first law of thermodynamics says we can’t get more out of a process than we put in, but the…

A: The first law of thermodynamics says we can’t get more out of a process than we put in, but the…

Q: Heat is transferred from the Sun to the Earth. How does this process increase the entropy of the…

A: The entropy of a system is defined as the randomness of the system. It tells you how much random the…

Q: A driver’s manual states that the stopping distance quadruples as the speed doubles; that is, if it…

A: To Prove:  The above given statement  using first law of thermodynamics and mechanics.

Q: How much is the change in the entropy of 0.5kg of water at freezing point when it is heated to  its…

A: Hey, there are multiple questions posted; we are authorized to answer one question at a time, since…

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

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Q: Living organisms, as they grow, convert relatively simplefood molecules into a complex structure. Is…

A: According to the second law of thermodynamics, the entropy of a system always increases. If the…

Q: What is the physical explanation for the loss in entropy?

A: Physical Explanation of Entropy Entrpy is a measure of randomness of any system or associated with…

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…

Q: Differentiate between the reversible and irreversible process in thermodynamics.

A: Reversible processes are slow processes contains a series of stages and in stage the thermodynamic…

Q: Under which condition does the combined entropy of two interacting systems decrease? Group of…

A: According to third law of thermodynamics, entropy of a system can stay constant or increase but not…

Q: The second law of thermodynamics states that we cannot build a perfect heat engine. Explain why.

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Q: From what you currently know, is the second law of thermodynamics good or bad? Why do you think so?

A: Answer: Second law of thermodynamics is very important for our universe. It's states that entropy…

Q: Does a gas become more orderly when it liquefies? Does its entropy change? If so, does the entropy…

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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: The entropy statement of the second law of thermodynamics implies that the order of the universe is…

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Q: Explain why the 3 statements for the 2nd Law of Thermodynamics are equivalent

A: Statements of the second law of thermodynamics: Kelvin - Planck's statement: For a device, it is…

Q: What is entropy of a system? How can second law of thermodynamics be stated in terms of entropy?

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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.