One of the popular demonstrations in science museums involves the suspension of a ping-pong ball by an
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One of the popular demonstrations in science museums involves the suspension of a ping-pong ball by an upward air jet. Children are amused by the ball always coming back to the center when it is pushed by a finger to the side of the jet. Explain this phenomenon using the Bernoulli equation. Also determine the velocity of air if the ball has a mass of 3.1 g and a diameter of 4.2 cm. Assume the air is at 1 atm and 25°C.
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Bernoullis equation states that for a steady inviscid and incompressible flow the total energy of a fluid element is constant along a streamline This ...View the full answer
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Related Book For 
Fluid Mechanics Fundamentals And Applications
ISBN: 9780073380322
3rd Edition
Authors: Yunus Cengel, John Cimbala
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