Properties of matter questions | form five Physics

Mention any two factors which affect the surface tension of the liquid and in each case explain two typical examples.

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UNSOLVED

Why molecules on the surface of a liquid have more potential energy than those within the liquid? Briefly explain.

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UNSOLVED

Derive an expression for excess pressure inside a soap bubble of radius R and surface tension when the pressures inside and outside the bubble are P₂ and P₁ respectively.

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UNSOLVED

A soap bubble has a diameter of 5mm. Calculate the pressure inside it if the atmospheric pressure is 10⁵ Pa and the surface tension of a soap solution is 2.8x10^-2 Nm^-1.

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UNSOLVED

Water rises up in a glass capillary tube up to a height of 9.0cm while mercury falls down by 3.4cm in the same capillary. Assume angles of contact for water-glass and mercury-glass as 0^o and 135^o respectively. Determine the ratio of surface tensions of mercury and water.

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UNSOLVED