I have a question on fluid physics...?
954673
Well the answer is obvious but I don't have time, gotta go....
1165265
its all to do with weight displacement and the volume of water
162268
The density of the fluid and the density of the object.
372621
Since the speed is constant, the pressure difference is only due to the pressure exerted by the 4m column of liquid.\n\nThe pressure exerted by “h” column of liquid of density‘d’ is hdg.  (g= 9.81 m/s^2). \n\nhdg = 4 x 925 x 9.81 = 36297 pascal.
669277
For horizontal fluid flow, an increase in the velocity of flow will result in a decrease in the static pressure. The equation describing this effect is known as Bernoulli's law. The most practical example of this is in the action of an airfoil. The shape of an airplane wing is such that air flowing over the top of the wing must travel faster than the air flowing under the wing, and so there is less pressure on the top than on the bottom, resulting in lift. \n\nBernoulli's law describes the behavior of a fluid under varying conditions of flow and height. It states \n\n P + ½ pv² + pgh = [constant] \n\n\nwhere P is the static pressure (in Newtons per square meter),  is the fluid density (in kg per cubic meter), v is the velocity of fluid flow (in meters per second) and h is the height above a reference surface. The second term in this equation is known as the dynamic pressure. The effect described by this law is called the Bernoulli effect, and  is sometimes known as Bernoulli's equation.
810714
the velocity of fluid flow is proportional to area.\nfind the total area of one 4 mm tube compared to 2  mm tubes.  Here is a hint, they wont be the same.
1089285
Conductivity does not depend on direction of heat flow.\n\nFound a paper on thermal conductivity see Fig 3
1063906
You're confusing resistance with pressure. If indeed there is a difference in voltage between A and B then there will be flow.\nThink of a tank filled with water held a few feet above another tank that has a pipe joining the two. Water will flow to the lower container thru the pipe. In this case the pipe has no resistance, which means water flows at maximum possible speed.\nIf both tanks are at the same level, then, sure, there will be no water flow. That's not how the problem was stated, however.
341043
Previous answerer had it correct.  Falling-ball viscometers are based on Stokes' Law.  See sources below for a complete description.
462517
If there are bubbles of air then you will have less liquid than you are intending to have. Assuming you are calculating density via measurementof mass then the mass you get will be less than it should be for that volume of that liquid. As a result the calculated density will work out lower than it should do.
914444
I will be honest I only know part of the answer but here's what i know...\n\nfluid pressure increases with depth because there is more fluid on top of it thus more weight and it casues compression (pressure)\nand thats about all I can expalin
177575
If the fluid is brought to a rest by the beam then the drag coeff Cd is one.\nhttp://en.wikipedia.org/wiki/Drag_coefficient\n\nThis paper seems relevant to your calculations.\nhttp://www.artificialreefs.org/ScientificReports/CancunHotelRBstability.htm
329557
Try this....\n\nhttp://www.efunda.com/formulae/solid_mechanics/mat_mechanics/pressure_vessel.cfm
28632
Carl Wilhelm Oseen was a professor in Uppsala, and also the person who nominated Einstein for the Nobel Prize for the photoelectric effect. One of the areas he worked in was the flow of anisotropic fluids, and liquid crystals, etc. Reading a bit of the literature, what I suspect is called an oseen flow is an approximation to the full fluid dynamic equations that allow them to be solved easier in certain situations, and still be good models for the physics (incompressibility is assumed, I suspect, for example). I gather a major feature is assumption of a linear model for the inertia term in the Navier-Stokes equations (see the notes for the MIT course, in the references).  \n\nOne could dig into this much deeper of course. I have attached a couple of references I looked at.
1045468
The link below describe Navier-Stokes Equation in detail.  It can tell you much more than I can write over here!  As of now the solution to the equation does not exist.  If you can solve it let me know.
770931
yes the kinetic velocity is incresed....due to the phase change...this is why we give energy for the liquid to vapourise to increase the energy of each molecule and seperate them ...for the motion to be faster
1031001
You could class them as soft solids, since they do not flow. They may be very viscous liquids... but solid is the closest definition.\n\nThe are not truley fluid {which means "gas or liquid" in Physics}, since I can put it in a bowl and it won't coat the bottom.