PHYS 1080 Chapter 14: Study Guide 14_ Fluid Dynamics

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orangereindeer668

6 Dec 2018

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1211 streamlines fluidmoves alongsmoothlineswheninvolvedinbiologicalsystems thistypeofflowis calledstreamlinehowgaminarhow itcanbecontinuousandconstant a b a. Thus if n tubeseachhavinganaverageflowspeedvi joinanddivideinto nztubeseachhavingaverageva the equationofcontinuitywouldbemodifiedto. And achangeinkineticenergy ok sincetheaveragehowspeedisgreaterin 2than 1 therewillbeatotalchangeofmechanicalenergyof oe out ok or de cmg. gs mgy tczmu22 imrie. Overthetimeinterval t theliquidregion1 ispushedtowardadistance l byaforceofmagnitudeforpetewherepiis thepressureexertedbythefluidbehind theworkwn donebythisforceisp ail p v wherem isthevolumeflowingpastapointinregion1intimet. Wn d e by1ns or is it l n where n nevolumetr gp si apointinregioninternet thenetworkdoneisequaltothechangeinmechanicalenergyde i bernoulli"sequation pt ipv2 pgy constant. Bneieqn p iput pgy pz ipv pgy sincethetubeishorizontalye ya. Continuityean air am a trz o. org q yfoozomepy i n 2. 25 substitutingin 1 then v 5. 9 sinceq it v then q a 0 72x5af 4. 2103mf. Example122 bywhatpercentagewouldthepressuredropinanarteryastheblooddensity1. 05103kg1ms enters aregionwhichhas beennarroweddownbyanatheroscleroticplaguetoacrosssectionalareaonly45ofnormal assumethatthe narrowingoccurswithinaveryshortdistanceandhenceanychangeinelevationwillbenegligibleassumethattheblood pressure inthenormalarteryis100mmhg andthattheflowspeed inthisnormalregionis0. 121. Pit"spin pgy patzpre pgy isinceyeya pg mai bernoulli p pz epcui v4. A v aar sinceaa toconvertnormalarterialpressure p loommug pause then u 5m substitutinginaboveean py b 12pm. 1. 33104pa x9. 80 xoloom ofxioox y. gqqopa. ua now i xx.

Related Questions

A hydraulic has two pistons. Piston 1 has a radius of 0.7 cm andpiston 2 has a radius of 2.5 cm.

a.) Determine the area of piston 1.
___________cm2

b.) Determine the area of piston 2.
____________ cm2

c.) Determine the theoretical mechanical advantage (TMA) of thehydraulic.
___________________

d.) What does Pascal's Principle say?

1.The total amount of volume remains constant.

2.The pressure applied to an enclosed fluid is transmittedundiminished throughout the fluid and to the walls of thecontainer.

3.Fluid tends to flow faster where the pressure is lower.

4.The force per unit area.

5.The amount of fluid displaced by an object is equal to the volumethat has been submerged in the fluid.

6.The buoyant force on an object wholly or partially submerged in afluid is equal to the weight of the fluid it displaces.

e.) A pressure of 130 Pa is applied at piston 1. As a result, howmuch pressure will be exerted at piston 2?
________________Pa

f.) For a hydraulic, why does the actual mechanical advantage (AMA)tend to be less than the TMA?

1.Because of friction between the pistons and the walls of thehydraulic.

2.Because liquid is compressible.

3.Because of air drag.

4.Because it's impossible to deliver electricity at a constant rateto the hydraulic.
.
g.) What can be done to make the AMA closer to the the TMA?

1.Use superconductors.

2.Use a gas instead of a liquid.

3.Use a lubricant.

4.Make it more aerodynamic.
.

(a) Using Bernoulli's equation, show that the measured fluid speed v for a pitot tube, like the one in Figure 12.7 (b), is given by where h is the height of the manometer fluid, is the density of the manometer fluid, is the density of the moving fluid, and g is the acceleration due to gravity. (Note that v is indeed proportional to the square root of h, as stated in the text. (b) Calculate v for moving air if a mercury manometer's h is 0.200m.

Figure 12.7 Measurement of fluid speed based on Bernoulli's principle. (a) A manometer is connected to two that are close togeter and small enough not to disturb the flow. Tube 1 is open at the end facing the flow. A dead spot having zero speed is created there. Tube 2 has an opening on the side, and so the fluid has a speed V across the opening; thus, pressure there drops. The difference in pressure at the manometer is , and so h is proportional to .