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What would be the work done on/by the system ifthe internal energy of the system falls by 100 jouleseven when 200 joules of heat is supplied to it? |
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Answer» We have to calculatethe work done on/by the system if the internal energy of the system falls by 100 joules even when 200 joules of heat is supplied to it.Solution:By sign convention,dQ = du + dw .......... (1)du = 200 J (∵Heat absorbed is positive )dw = - 100 J (∵Heat given out is negative)Substitutethese values in (1):dQ = 200 - (-100)dQ = 200 + 100dQ = 300 JThis is the required answer. |
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