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![[Post New]](/templates/default/images/icon_minipost_new.gif) 17 Nov 2007 13:03:31 IST
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Find the work done if a gas is taken from P1,V1,T1 to P2,V2,T2 .
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Umang |
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17 Nov 2007 22:31:05 IST
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-P2(V2-V1) or -nR(T2-T1) i think
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18 Nov 2007 22:34:12 IST
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Hey atavistic !
thats what i am asking !
will it be -nR(T2-T1) or -(P2V2-P1V1) ????
Pls answer !!!
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Umang |
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19 Nov 2007 12:13:20 IST
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IT WILL B JUST AREA UNDER THE P-V GRAPH... INSPITE OF TEMP...NOT BEING CONSTANT
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19 Nov 2007 20:05:12 IST
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Hey nikss !
no graph is given in the question .
U mean it would be -(P2V2-P1V1) ????
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Umang |
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19 Nov 2007 22:37:52 IST
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Use both and see if same answer or not.Should give same answer.
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19 Nov 2007 22:46:48 IST
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first of all, work done can not be obtained from the given data coz work done depends on the path or the process. only change in internal energy can be found by knowing initial and final P, V, T
if u know heat change (Q) u can find work done from
Q=dU+W
dU=nCv(t2-t1)
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22 Nov 2007 22:50:48 IST
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Hey !
A question based on same concept was asked in IIT and no Q was given
and atavistic ,both answers r not same !!!
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Umang |
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