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woleraymond Group Title

Calculate how much heat is needed to be supplied to a gas at a pressure of 1.25 x10^5 Pa, such that the pressure increases by 25 per cent at constant volume, and the internal energy by 120J.

  • 2 years ago
  • 2 years ago

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  1. shivam_bhalla Group Title
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    Tell me what you have done till now. How have you approached the problem ??

    • 2 years ago
  2. woleraymond Group Title
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    @shivam_bhalla i really dont ve any idea yet

    • 2 years ago
  3. shivam_bhalla Group Title
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    Tip: Do you know first law of Thermodynamics.?? If yes apply that

    • 2 years ago
  4. woleraymond Group Title
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    U = Q - PV but the question is messing me up, coast isnt clear yet

    • 2 years ago
  5. shivam_bhalla Group Title
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    Ok. You are right. Now We have to find Q-->Heat supplied It is given that change in internal energy ( U ) = 120 J Now we have to find W? Now tell me the formula for W(work done)??

    • 2 years ago
  6. woleraymond Group Title
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    work done is Pressure times change in volume

    • 2 years ago
  7. shivam_bhalla Group Title
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    Right. Now what is change in volume here??

    • 2 years ago
  8. woleraymond Group Title
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    i tink its zero

    • 2 years ago
  9. shivam_bhalla Group Title
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    Yes you are right No tell me What is Q ?

    • 2 years ago
  10. shivam_bhalla Group Title
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    Now tell me What is Q ?

    • 2 years ago
  11. woleraymond Group Title
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    120J?

    • 2 years ago
  12. shivam_bhalla Group Title
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    Yes. You gave me the answer :)

    • 2 years ago
  13. woleraymond Group Title
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    thanks

    • 2 years ago
  14. shivam_bhalla Group Title
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    Welcome :)

    • 2 years ago
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