Match the appropriate answer to each question. If a heat engine operated entirely without friction, would it then be 100% efficient? Is it possible to build a Carnot engine? Is it possible to convert a given quantity of thermal energy entirely into kinetic energy? Is it possible to convert a given quantity of kinetic energy entirely into thermal energy? [Choose ] [Choose ] [Choose ] [Choose ] < < o

Match the appropriate answer to each question. If a heat engine operated entirely without friction, would it then be 100% efficient? Is it possible to build a Carnot engine? Is it possible to convert a given quantity of thermal energy entirely into kinetic energy? Is it possible to convert a given quantity of kinetic energy entirely into thermal energy? [Choose ] [Choose ] [Choose ] [Choose ] < < o

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter18: Heat Engines, Entropy, And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 6OQ

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Similar questions

Which of the following is true for the entropy change of a system that undergoes a reversible, adiabatic process? (a) S 0 (b) S = 0 (c) S 0
Use a PV diagram such as the one in Figure 22.2 (page 653) to figure out how you could modify an engine to increase the work done.
A great deal of effort, time, and money has been spent in the quest for a so-called perpetual-motion machine, which is defined as a hypothetical machine that operates or produces useful work indefinitely and/or a hypothetical machine that produces mole work or energy than it consumes. Explain, in terms of the first law of thermodynamics, why or why not such a machine is likely to be constructed.
A Carnot engine operates in a Carnot cycle between a heat source at 550 and a heat sink at 20 . Find the efficiency of the Carnot engine.
Consider cyclic processes completely characterized by each of the following net energy inputs and outputs. In each case, the energy transfers listed are the only ones occurring. Classify each process as (a) possible, (b) impossible according to the first law of thermodynamics, (c) impossible according to the second law of thermodynamics, or (d) impossible according to both the first and second laws. (i) Input is 5 J of work, and output is 4 J of work. (ii) Input is 5 J of work, and output is 5 J of energy transferred by heat. (iii) Input is 5 J of energy transferred by electrical transmission, and output is 6 J of work. (iv) Input is 5 J of energy transferred by heat, and output is 5 J of energy transferred by heat. (v) Input is 5 J of energy transferred by heat, and output is 5 J of work. (vi) Input is 5 J of energy transferred by heat, and output is 3 J of work plus 2 J of energy transferred by heat.
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Does the entropy increase for a Carnot engine for each cycle?
Discuss three different common examples of natural processes that involve an increase in entropy. Be sure to account for all parts of each system under consideration.
Is it possible for a system to have an entropy change if it neither absorbs nor emits heat during a reversible? transition? What happens it the process is irreversible?
A certain gasoline engine has an efficiency of 30.0%. What would the hot reservoir temperature be for a Carnot engine having that eficiency, if it operates with a cold reservoir temperature of 200°C?
Calculate the increase in entropy of the Universe when you add 20.0 g of 5.00C cream to 200 g of 60.0C coffee. Assume that the specific heats of cream and coffee are both 4.20J/g C.
A monoatomic ideal gas (n moles) goes through a cyclic process shown below. Find the change in entropy of the gas in each step and the total entropy change over the entire cycle.