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A glass U-tube is such that the diameter...

A glass U-tube is such that the diameter of one limb is `3.0mm` and that of the other is 6.0mm. The tube is inverted vertically with the open ends below the surface of water in a beaker. What is the difference between the height to which water rises in the two limbs? Surface tension of water is `0.07Nm^(-1)`. Assume that the angle of contact between water and glass is `0^(@)`.

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SL ARORA-Mechanical Properties of fluids-Exercise
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  19. A Piece of brass (alloy of zinc and copper) weighs 12.9 g in air. When...

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