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Author Question: Which statement below regarding the First Law of Thermodynamics is most correct? (Read 193 times)

torybrooks

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on: Aug 6, 2020

Question 1

Which of the following substances has the greatest specific heat?

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copper

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ice

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water

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steam

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Ice, water, and steam have equal specific heats since they are the same material, and this specific heat is greater than that of copper.


Question 2

Which statement below regarding the First Law of Thermodynamics is most correct?

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A system can do work externally only if its internal energy decreases.

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The internal energy of a system that interacts with its environment must change.

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No matter what other interactions take place, the internal energy must change if a system undergoes a heat transfer.

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The only changes that can occur in the internal energy of a system are those produced by non-mechanical forces.

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The internal energy of a system cannot change if the heat transferred to the system is equal to the work done by the system.
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by torybrooks on Aug 6, 2020

polinasid

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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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Only 39% of students answer this correctly


torybrooks

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Reply 2 on: Aug 6, 2020
Excellent

gcook

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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