Physics for Scientists and Engineers with Modern Physics (4th Edition)

Chapter 20

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Efficiency is the ratio of useful work done to the... more

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No. ; The efficiency of any heat engine can be ... more

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The maximum possible efficiency for the given ... more

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Transformation of a given amount of heat ... more

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Total microstates that have 2 or more than 2 heads... more

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A   decrease in the low-temperature reservoir will... more

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The factors that keep real engines from reaching ... more

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An adiabatic process is nothing but the ... more

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The phase change of water at its freezing point is... more

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1. Melting of ice2. Bursting of tires3. Dissolving... more

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1 kg of liquid iron will have greater entropy than... more

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No, the process of powdered milk being added to ... more

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The change in the entropy of the two identical ... more

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This is valid because more energy would be ... more

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For reversible adiabatic process, and for an ... more

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25% ; The formula to calculate the efficiency of ... more

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; The formula to calculate the efficiency of the... more

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16% ; The formula to calculate output power of ... more

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21% ; The time taken by the car to use up the ... more

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22.4% ; The formula to calculate the efficiency ... more

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73.7% ; The formula to calculate the efficiency ... more

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; The formula to calculate the efficiency of the... more

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1827.78 W ; The formula to calculate the ... more

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; The formula to calculate the efficiency of the... more

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; The formula to calculate the efficiency of the... more

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1445.7 m ; If the person is treated as a heat ... more

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; Time for input heat is , where is the distance... more

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; The formula to calculate the efficiency of the... more

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232.5 K72.86 K ; The formula to calculate the ... more

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8.55 ; It is given that the ignition temperature ... more

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14.53 ; The formula to calculate coefficient of ... more

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5.37 ; The formula to calculate coefficient of ... more

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2.6 ; The efficiency of the carnot engine is ... more

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; The formula for the coefficient of performance... more

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; A refrigerator does work to take heat from a ... more

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-1514.13 J/K ; The formula to calculate the change... more

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0.2 J/K ; The formula to calculate the change in ... more

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; There are three processes of entropy change of ... more

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4.4 J/K ; It is given that a 2.8-kg piece of ... more

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9.3 J/K ; The process is isothermal, that is, the ... more

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4 J/K ; The formula to calculate the change in ... more

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; Entropy is a state variable. So, the entropy ... more

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; For a system with constant volume, the formula ... more

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; Considering the process is reversible, the ... more

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; The formula to calculate the heat transferred  ... more

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MacrostateNo. of Microstates4H103H,1T42H,2T61H, ... more

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Cells would fit on the roof of an average house... more

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; Consider there are no dissipative forces ... more

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; The amount of heat gained by a solid object to ... more

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; The formula to calculate the change in entropy ... more

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57.03 W ; The heat will enter the freezer due to ... more

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105 W ; An air conditioner takes heat from inside... more

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; According to the first law of thermodynamics, ... more

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; In an adiabatic process, no heat exchange takes... more

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13 J/K ; The amount of heat required to change the... more

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15.79 kg ; The efficiency of the refrigerator is ... more

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