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 Form 2 Physics Topical Questions and Answers on Fluid Flow

The figure below shows a sheet of paper rolled into a tube. When a fast moving air is blown into the tube as shown in the diagram the paper tube collapses. Explain the observation.

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Answer Text:
Blowing into the tube increases the speed of the air inside which makes the pressure inside to decrease, the pressure difference between inside and outside makes the paper to collapse.


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