Calculate the internal pressure of a 25 mm diameter soap bubble if the tension in the soap film is 0.5N/m.

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Q: 2.48 A spherical soap bubble has an inside radius R, a film thickness t, and a surface tension o.…

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Q: After being filled to a depth d with SAE 30 oil (SG = 0.91), a glass is placed to float in a tank of…

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Q: Two lbs of water vapor in a piston-cylinder assembly expands at a constant pressure of 300 lb/in²…

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Q: 2.52 A water column in a glass tube is used to measure the pres- sure in a pipe. The tube is 1/4 in.…

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Fluid Materials

In general terms, anything that flows can be termed as a fluid. In other words, a fluid is any substance that cannot resist shear forces and deforms continuously under the application of external shear forces. Fluid materials differ completely from solid materials such as metals and alloys. For instance, if we consider two infinitesimally small cross-sectional areas of fluid materials and solid materials, and apply shear forces to these elements, both the elements will undergo deformation. Upon releasing the shear force, the element of the solid materials will regain its original orientation, but the element of the fluid materials will keep on deforming continuously under the action of the shear force.