Example: Computing polytropic index of process

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  1. Sean O'Neill
  2. P333
  3. Engineering Thermodynamics
  4. PLU
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Perfect! Straight to the point! Easy and simple to follow, and a nice way to show the calculations!
10/10! You just saved my assignment, had forgotten how to use log.

skibumull
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how do you find V2 if you were given P2 and T2?

mythicalvinny
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When given data Pressure and Temperature then how find the value of index?

MEHEDIHASANBME-
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Filling a balloon can be described as a polytropic process. The pressure of the air in the balloon starts at 100 kPa; then you fill the balloon with air to a pressure of 200 kPa. The volume of the balloon expands by a factor of 5 during this process. What is the power on the polytropic process of filling the balloon, i.e. what is n in the equation PV^n = constant? (assume the system includes the person's lungs).

Sadly there are no volumes given here, just the increase by a factor of 5. Not sure how to calculate this. Anyone has any ideas?

CloudyWithABitOfRain
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omg yes finally been looking all over the place on how to do that

kellyschafer
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great video. Straight and to the point

juaneaponte
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