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anonymous
 4 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
anonymous
 4 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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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0first find:\[\int\limits_{.15}^{.05} (\frac{ 5 }{ V } +1.5)dV\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0that will give you the work done...

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0they give you Q so if you have W you know change in internal energy

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0you know the conversions?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0alright, i understood now. thanks a lot!

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0oooooh. really really really thank you. i thought i'm just going to substitue the v's. lol
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