Select two questions as take-home investigation (Worked as homework and pictured them.)(1) Try floating a sewing needle on water. In order for this activity to work, the needle needsto be very clean as even the oil from your fingers can be sufficient to affect the surfaceproperties of the needle.(2) Place the bristlesE of a paint brush into water. Pull the brush out and notice that for ashort while, the bristles will stick together. The surface tension of the water surrounding thebristles is sufficient to hold the bristles together. As the bristles dry out, the surface tensioneffect dissipates.(3) Place a loop of thread on the surface of still water in such a way that all of the thread is incontact with the water. Note the shape of the loop. Now place a drop of detergent into themiddle of the loop. What happens to the shape of the loop? Why?(4) Sprinkle pepper onto the surface of water. Add a drop of detergent. What happens? Why?(5) Float two matches kparallel to each other and add a drop of detergent between them.What happens? Note: For each new experiment, the water needs to be replaced and the bowlwashed to free it of any residual detergent.Question: Calculate the gauge pressure inside a soapbubble 2.00 × 104 m in radius using the surfacetension for soapy water is (0.037 N/m). Convert thispressure to mm Hg.

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Description: Select two questions as take-home investigation (Worked as homework and pictured them.)(1) Try floating a sewing needle on water. In order for this activity to work, the needle needsto be very clean as even the oil from your fingers can be sufficien

For a bubble, gauge pressure is given by:- ∆P=4σR where, ∆P=Gauge Pressureσ=Surface…

Answered: Question: Calculate the gauge pressure…

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Question: Calculate the gauge pressure inside a soap bubble 2.00 × 104 m in radius using the surface tension for soapy water is (0.037 N/m). Convert this pressure to mm Hg.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Fluid Pressure

The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.

Gauge Pressure

Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.

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