9.20 What is the excess pressure inside a bubble of soap solution of radius 5.00 mm

PHYSICS · Subjective · CBSE · Physics · Mechanical Properties of Fluids · Mechanical Properties of Fluids

Problem

9.20 What is the excess pressure inside a bubble of soap solution of radius 5.00 mm , given that the surface tension of soap solution at the temperature (20∘C20^{\circ} \mathrm{C} ) is 2.50×10−2 N m−12.50 \times 10^{-2} \mathrm{~N} \mathrm{~m}^{-1} ? If an air bubble of the same dimension were formed at depth of 40.0 cm inside a container containing the soap solution (of relative density 1.20 ), what would be the pressure inside the bubble ? ( 1 atmospheric pressure is 1.01×105 Pa1.01 \times 10^{5} \mathrm{~Pa} ).

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