Recent content by jb95

  1. J

    PV^lamba=constant in an isentropic Flow

    Thank you, and again I am deeply sorry.
  2. J

    PV^lamba=constant in an isentropic Flow

    I apologise but this does not detract from the fact your response was not helpful. I would not consider it a leading question. I do appreciate the significance of leading question but that is not what it was. Anyway, I have figured it out, but thanks for at least posting a reply. I would also...
  3. J

    PV^lamba=constant in an isentropic Flow

    You were NOT helpful at all with that silly answer. I don't know why you bothered replying. All I am asking is can you use pv=(1/M)RT to determine specific volume at either points 1 or do you have to use the adiabatic expression Pv^lamba. Clearly this is not your area!
  4. J

    PV^lamba=constant in an isentropic Flow

    if a gas expands isentropically (consider the process reversible adiabatic), from point 1 in a nozzle to point 2 downstream of the nozzle. If you know the pressure and temperature at point 1, can you use the relationship pv=1/M RT to work out the specific volume at point 1? And similarly if you...
  5. J

    I in deciding what my error bars should be

    Thank you Dr. Courtney. I just had one more thing to check with you for this lab report. If a quantity x is some function of 1/y^3 (y is being measured), the percentage uncertainty in y is 0.7%, then the would the percentage uncertainty propagated in x be 3*0.7?
  6. J

    I in deciding what my error bars should be

    So, we did an experiment to find the dissolved oxygen concentration in % over time in a stirred tank reactor at 2 different flow rates and at 3 different agitator speeds. We did not do any repeat measurements, it was just one reading per condition. Now I am confused what sort of error bars I...
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