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A boulder is dropped into a deep lake. What happens to the b…

A boulder is dropped into a deep lake. What happens to the buoyant force on it as it sinks deeper?

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A metal bar weighs 80 [N] in air. Submerged in fresh water,…

A metal bar weighs 80 [N] in air. Submerged in fresh water, a scale reads 60 [N]. What is the buoyant force on the bar?

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You dive one meter below the surface of a small backyard poo…

You dive one meter below the surface of a small backyard pool, then one meter below the surface of a large lake. How do the pressures on your ears compare?

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A hydraulic press turns a small force into a large one. Whic…

A hydraulic press turns a small force into a large one. Which earlier idea sets the price?

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Water rises about 5 [cm] in a glass tube with a half millime…

Water rises about 5 [cm] in a glass tube with a half millimeter bore. In a tube with a quarter millimeter bore, what happens?

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A mercury barometer stands at 76 [cm]. Mercury is 13.6 times…

A mercury barometer stands at 76 [cm]. Mercury is 13.6 times as dense as water. What height of water would balance the same atmospheric pressure?

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The buoyant force on a fully submerged object in fresh water…

The buoyant force on a fully submerged object in fresh water is 39.2 [N]. What volume of water did it displace?

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Capillarity needs two attractions to work. Which pair?

Capillarity needs two attractions to work. Which pair?

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A rock of volume 0.0080 [m3] is fully submerged in fresh wat…

A rock of volume 0.0080 [m3] is fully submerged in fresh water. What is the buoyant force on it?

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Why does the atmosphere have no definite surface the way a l…

Why does the atmosphere have no definite surface the way a lake does?

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