Groundhogs know physics!! They ventilate their burrows by building a mound over one entrance, which is open to a stream of air; and the other entrance is at ground level that is open to stagnant air. How exactly does this construction ventilate the burrow?© BrainMass Inc. brainmass.com October 24, 2018, 9:07 pm ad1c9bdddf
According to Bernoulli's Equation, flowing air exerts less pressure than still or stagnant air. ...
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