Q9: A space of 20mm between two parallel plates is filled with castor oil at a temp of 38° C. One of the plates is involving at a speed of 0.25 m/s while the other one is held stationary. Determine the shear stress on the surface of the moving plate in contact with the fluid.

Q9: A space of 20mm between two parallel plates is filled with castor oil at a temp of 38° C. One of the plates is involving at a speed of 0.25 m/s while the other one is held stationary. Determine the shear stress on the surface of the moving plate in contact with the fluid.

Name: Q9: A space of 20mm between two parallel plates is filled with castor
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Description: Q9: A space of 20mm between two parallel plates is filled with castor oil at a temp of 38° C. One ofthe plates is involving at a speed of 0.25 m/s while the other one is held stationary. Determine theshear stress on the surface of the moving plate i

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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In a two-dimensional, incompressible flow field, the velocity is V = 2xy ỉ + vỷ where x, y are in meters and V, v in m/s. a) Determine the y component of velocity, v, if its value on the x-axis is zero. b) Determine the dilatation rate of a fluid element in this flow field. c) Determine if the flow is rotational or not. d) Explain why it is possible to define a stream function for this flow. y 1.0 e) Obtain the stream function for this flow. f) Plot the streamline passing through the point (1,1,1) by hand (approximately). State the value of the stream function for this streamline and mark the -1.0 1.0 x direction of the flow on the streamline. g) For this flow field, determine the magnitude of the average velocity of the -1.0 fluid crossing the surface BA shown on the right. B dv dw j+ (дх ду, ди ne D x = дх ди 1 Hint: U = - V = - ду ðy dz. др др ap ap + w: ду Dp ди + p(V ·V) at + (V · v)p + p(V ·7) at dv + ду + (u + v +p əx = 0 = Dt Əx v-(pV)
1. Margaret put the 2.0 Kg brick has the dimensions 7.5 cm x 15 cm x 30 cm in the table top. Find the pressure exerted by the brick on a table when it is resting on irs face with a dimension 7.5 cm x 15 cm. Please include illustration.
The South African swimming team sometimes use the UWC pools to practice. Suppose that you take a deep breath and then DIVE 2 m deep into the pool. You immediately feel the pressure against your eardrums. This pressure is dependent on the following parameters OA. the depth and density of the water at that point as well as the gravitational acceleration (g) OB. the density of the water as well as the gravitational acceleration (g) OC. Only the depth of the water at that point. O D. the depth of the water at that point as well as the gravitational acceleration (g)
3. One of the dangers of tornados and hurricanes is the rapid drop in air pressure that is associated with such storms. Assume that the air pressure inside of a sealed house is 1.02 atm when a hurricane hits. The hurricane rapidly decreases the external air pressure to 0.910 atm. A square window in an outside wall of the house measures 2.02 m on each side. What is the magnitude of the net force (directed outwards) exerted on this window? (1 atm = 1.0135 x 105 Pa.)
VISCOUS FLOW : Poiseuille’s law, Stokes law or Reynolds Number One way to administer an inoculation is with a “gun” that shoots the vaccine through a narrow opening. No needle is necessary, for the vaccine emerges with sufficient speed to pass directly into the tissue beneath the skin. The speed is high, because the vaccine ( = 1100 kg/m3) is held in a reservoir where a high pressure pushes it out. The pressure on the surface of the vaccine in one gun is 4.1 x 106 Pa above the atmospheric pressure outside the narrow opening. The dosage is small enough that the vaccine’s surface in the reservoir is nearly stationary during an inoculation. The vertical height between the vaccine’s surface in the reservoir and the opening can be ignored. Find the speed at which the vaccine emerges.
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