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lilMissMindset

  • 3 years ago

help please! i don't know how to use the pressure volume relation in this problem. A fluid system undergoes a nonflow frictionless process following the pressure volume relation as P = (5/V) + 1.5 where P is in bar and V is in m3. During the process the volume changes from 0.15 m3 to 0.05 m3 and the system rejects 45 kJ of heat. Determine: A] change in internal energy B] change in enthalpy

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  1. Algebraic!
    • 3 years ago
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    Are you there?

  2. lilMissMindset
    • 3 years ago
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    yes

  3. Algebraic!
    • 3 years ago
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    first find:\[\int\limits_{.15}^{.05} (\frac{ 5 }{ V } +1.5)dV\]

  4. Algebraic!
    • 3 years ago
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    that will give you the work done...

  5. Algebraic!
    • 3 years ago
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    seem reasonable?

  6. Algebraic!
    • 3 years ago
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    delta U = Q-W

  7. Algebraic!
    • 3 years ago
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    they give you Q so if you have W you know change in internal energy

  8. Algebraic!
    • 3 years ago
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    you know the conversions?

  9. Algebraic!
    • 3 years ago
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    hello?

  10. lilMissMindset
    • 3 years ago
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    alright, i understood now. thanks a lot!

  11. Algebraic!
    • 3 years ago
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    sure!

  12. lilMissMindset
    • 3 years ago
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    oooooh. really really really thank you. i thought i'm just going to substitue the v's. lol

  13. Algebraic!
    • 3 years ago
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    heh

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