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Cards In This Set
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What is the definition of Density?
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Density = Mass/Volumep=m/V
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 What is the pressure at the base?What is the Volume of the Column?Hence what is P? |
 Pressure at base= V p g/AV= A hP=h p g |
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What is Archimedes' Principle?
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The upthrust is equal to the weight of the displaced fluid.
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What is Upthrust equal to?
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U = p V gUpthrust = density x volume x g
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What makes an object float?And why do boats have Plimsoll lines?
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An object will float in a fluid if the upthrust is equal to its weight.Plimsoll lines indicate how far the boat will sink or float, due to salt concentration.
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Describe laminar flow?
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Laminar flow:- Layers of fluid continue in lines at a constant velocity- the lines do not mix- the layers slide over each other- the streamlines stay attached
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Describe turbulent flow?
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Turbulent flow:- The flow lines are unstable- Layers mix- The layers form swirls/ Eddies- The velocity is not constant- Flow lines become detached
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What is viscosity?
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Viscosity of a liquid refers to its stickiness and thus its resistance to flow.
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What is Stokes' Law?
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F = 6 x Pi x Eta x Radius x Velocity
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What is the coefficient of Viscosity?
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Coefficient of viscosity = 2(Ps - Pf)gr^2/9V
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What does the free-fall of a sphere falling in fluid look like?
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 Look at picture |
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What may cause variations in viscosity?
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TemperatureThixotropy
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