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Thermal Physics

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23 Apr 2009 16:39:34 IST

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A gas undergoes a process such that P is proportional to (1/T). if the molar heat capacity for this process is C=33.24J/mol-K.

find the degree of freedom .....

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saharsha kumar keshkar

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23 Apr 2009 16:56:32 IST

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first law of thermodynamics......

we have.......

C=Cv +2R={R/(y-1)}+2R=33.24

substituting the value........y=1.5...(where y=Cp/Cv)

we know...

y=1 + {2/F}...

and getting degree of freedom(F)=4

answer is 4.....

saharsha kumar keshkar

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23 Apr 2009 16:58:36 IST

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if wrong NUDGE ME........

alok kapoor

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23 Apr 2009 17:16:36 IST

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correct answer.......

thanx.....

radhika

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23 Apr 2009 18:52:43 IST

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ya!

the answer is 4.......

saharsha kumar keshkar

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23 Apr 2009 18:59:47 IST

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for shortcut....remember...

any process of form PV^X=constant...

molar heat capacity is given by.......

so in this process....it is in form of....PV^1/2.....

but basic way is first one.....

james

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23 Apr 2009 19:14:24 IST

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nice shortcut................

karan nath

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Joined: 28 Feb 2009

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13 May 2009 19:00:34 IST

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good solution!

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