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General Knowledge Mixed Topics Quiz
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What happens if a stream of air is blown through a tube under one of the pans of a physical balance in equilibrium?
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A
The pan will go down
💡 Explanation:
When air is blown through a tube under a pan of a physical balance, the increased velocity of air creates lower pressure (Bernoulli's principle). This pressure difference pushes the pan downward. The pan doesn't go up or oscillate - it experiences a net downward force.