Teaching Physics with the Physics Suite

Edward F. Redish

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Air flow current

In lecture, we took two small straws, taped them in parallel, and blew through them, emptying nearly a lungful of air in a few seconds. Given that the density of air is about  1 kg/m3 estimate the mass current of air flowing through each straw in kg/s. Be sure to clearly state your assumptions and how you came to the numbers you estimated, since grading on this problem will be mostly based on your reasoning, not on your answer.

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Page last modified February 29, 2008: E48