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If the closed side of a U-tube is evacuated, then

Explore how differences in pressure affect fluid behavior in a U-tube and demonstrate the Bernoulli principle with paper strips. Engage in hands-on experiments that showcase fascinating physics concepts in action.

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If the closed side of a U-tube is evacuated, then

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  1. If the closed side of a U-tube is evacuated, then • the fluid in the closed side will be the same height as the open side. • the fluid will always be sucked to the top of the closed side. • the fluid will be sucked up to a height h=Patm/rg

  2. PAL Take two strips of paper, hold between thumb and forefinger of each hand. Let them hang down a couple cm apart. Blow between (not at) the strips. What happens?

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