Recent content by metiz1

  1. M

    Calculating pressure fromV1 to V2 with a polytropic exponent

    Yes you are right, however, in this situation I had to asume all the air was being compressed in a smaller volume withouth any air or heat escaping, so all is good.
  2. M

    Calculating pressure fromV1 to V2 with a polytropic exponent

    Thanks for your help! I had to use a hypotetical situation (n=1.4) for my calculations and see how the real word measurements stacked up...The n value I got was like 0.8...I dun goofed the measurement I think :P
  3. M

    Calculating pressure fromV1 to V2 with a polytropic exponent

    Thank you for your reply. I can't say I really understand your reply though...Shouldn't I enter the initial temperature (lets say 20C, 293K) somewhere in the equation?
  4. M

    Calculating pressure fromV1 to V2 with a polytropic exponent

    Homework Statement I have a bicycle pump where I need to calculate the pressure in a certain volume. No heat is lost during compression so this is a isentropic system initial volume is 0.3L final volume is 0.0195 Gas is air n=k Homework Equations I don't know, that's the problem...