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Author Question: An adiabatic free expansion of a gas in a thermally isolated container is not reversible because (Read 90 times)

ENagel

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on: Aug 6, 2020

Question 1

An 800-MW electric power plant has an efficiency of 30%. It loses its waste heat in large cooling towers. Approximately how much waste heat (in MJ) is discharged to the atmosphere per second?

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1 200

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1 900

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800

◦
560

◦
240


Question 2

An adiabatic free expansion of a gas in a thermally isolated container is not reversible because

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work must be done on the gas to return it to its original volume.

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heat must be exchanged with the surroundings to return the gas to its original temperature.

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its internal energy has a greater value after the expanded gas is returned to its original volume and temperature.

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of all of the above.

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of (a) and (b) above only.
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by ENagel on Aug 6, 2020

Mholman93

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Reply #1 on: Aug 6, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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ENagel

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Reply 2 on: Aug 6, 2020
Thanks for the timely response, appreciate it

juliaf

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Reply 3 on: Yesterday
Gracias!

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