Problem 8.15

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Problem 8.15

Postby SydneyKusumoputro_3K » Fri Jan 13, 2017 10:26 pm

For question 15 part (e), could someone explain why delta U = w (energy = work) is always true for an adiabatic process in a closed system?

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Joined: Sat Jul 09, 2016 3:00 am

Re: Problem 8.15

Postby Jessica_Kim_3I » Sat Jan 14, 2017 10:04 am

(As the problem says) "In an adiabatic process, no energy is transferred as heat." The change in internal energy (delta U) of a closed system is the net result of both heat and work: delta U= q+w (In section 8.6) . Because adiabatic processes don’t transfer energy as heat, U= w. (q=0).
Part b also helps with understanding part e: in part b, q=0 is always true because it is an adiabatic process so that means delta U=w. Hope this helps!

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