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(I) If the force $F$ needed to move the wire in Fig. 35 is$3.4 \times 10^{-3} \mathrm{N},$ calculate the surface tension $\gamma$ of theenclosed fluid. Assume $\ell=0.070 \mathrm{m} .$

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$2.4 \times 10^{-2} \mathrm{N} / \mathrm{m}$

Physics 101 Mechanics

Chapter 13

Fluids

Fluid Mechanics

Rutgers, The State University of New Jersey

University of Michigan - Ann Arbor

Hope College

University of Winnipeg

Lectures

03:45

In physics, a fluid is a substance that continually deforms (flows) under an applied shear stress. Fluids are a subset of the phases of matter and include liquids, gases, plasmas and, to some extent, plastic solids.

09:49

A fluid is a substance that continually deforms (flows) under an applied shear stress. Fluids are a subset of the phases of matter and include liquids, gases and plasmas. Fluids display properties such as flow, pressure, and tension, which can be described with a fluid model. For example, liquids form a surface which exerts a force on other objects in contact with it, and is the basis for the forces of capillarity and cohesion. Fluids are a continuum (or "continuous" in some sense) which means that they cannot be strictly separated into separate pieces. However, there are theoretical limits to the divisibility of fluids. Fluids are in contrast to solids, which are able to sustain a shear stress with no tendency to continue deforming.

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(I) Calculate the force ne…

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so the surface tension would simply be equal to the force divided by two l Ah, this is gonna be equal to 3.4 times 10 to the negative. Third, Newton's divided by two times 20.70 meters. And so we find that the surface tension is gonna be equal to 2.4 times 10 to the negative second Newtons per meter. This would be our final answer. That is the end of the solution. Thank you for watching.

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