- #1
moonkey
- 26
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Homework Statement
To find the ratio of the specific heat capacities of air (γ).
Homework Equations
PVγ=constant
The Attempt at a Solution
I performed the experiment a number of times to get an average for γ
The experiment consisted of a container with release valve, a hand pump, and a pressure sensor connected to "Logger Pro" (Graph plotting software)
My result was γ=1.29±0.01
Looking up engineering sites I found that the actual value of γ should be 1.40
I feel that my mistake is that I should have allowed for more time for the temperature of the air in the container to reach room temp. before releasing it with the valve.
However, my main query is this: Is γ=1.29±0.01 a good result for an experiment, using the equipment I mentioned, in a basic lab environment?
I want to know because I would like to discuss in my report why it's a good result if it is or what may have went wrong if it isn't.