Himanshu Pandey Asked a Question
April 10, 2020 10:45 pmpts 30 pts
explain me about the sign conventions like when work done is positive or negative similarly when heat is positive or negative (related to absorbed and released) & WHY SIGN CONVENTION IN PHYSICS IS OPPOSITE to CHEMISTRY
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  • Abhishek singh Best Answer
    sign convention for heat exchange and work on/by the system is explained by 3 people. I just want to add an important thing, work done, W=integral(-PdV) . here this negative sign. ...
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  • Somnath
    I understand your problem. It is little bit confusing for the beginners. Actually in physics Heat supplied to a system is taken as positive and workdone by the system is posive. H...
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  • Ruby negi thankyou
    dQ=+ve for heat absorbed by the system, dQ=-ve when heat is released.. dW=+ve when work is done by the system and dW=-ve when work is done on the system.. this is sign convention i...
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  • Ruby negi
     physics is more concerned with obtaining work from the system, thus it assumes a positive sign for work done by the system. On the other hand chemistry deals more with changes in ...
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  • Dhairya sharma
    when work done by the system it is supposed to be +ve because in this case volume increases while work done on the system is -ve because in this case volume decreases.
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