Two pieces of paper are hanging down with a couple of inches between them. If you...
Two pieces of paper are hanging down with a couple of inches between them. If you blow down between the papers, will they move towards each other, or away from each other?
Homework Answers
Two pieces of paper are hanging down with a couple of inches
between them. If you blow down between the papers, the air between
them is at a higher velocity and the pressure is lower than the
pressure of air around them and therefore they are pushed together
or towards each other. This is an application of the
Bernoulli effect.
Bernoulli equation
P1 + 1/2 pho v1^2 = P2 + 1/2 pho v2^2
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