2.22. Three parallel flat plates are separated by two fluids. Plate 1 (on the bottom) is atrest. Water, viscosity 0.8007 cP at 30°C, lies between plates 1 and 2. Toluene,viscosity 0.5179 cP at 30°C, lies between plates 2 and 3. The distance betweeneach pair of plates is 10 cm. Plate 3 moves at 3 m s¹. Find:(a) the velocity of plate 2 at steady-state(b) the force per unit area on plate 3 required to maintain the 3 m s¹ velocity

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Answered: Three parallel flat plates are…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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2.20 Find the dynamic and kinematic viscosities of kerosene, SAE 10W-30 motor oil, and water at a temperature of 38°C (100°F).
1.The density p Determine how the density varies with pressure along the depth h. The density at the surface of the fluid is of a fluid varies with depth h, although its bulk modulus K can be assumed constant. Po. 2.A circular disc of diameter (D) is slowly rotated with angular velocity of ( wi) in a liquid of large viscosity (u) at a small distance (h) from another moving disc at counter clockwise rotation of (w2), as shown in figure (2). Derive an expression of torque (T) necessary to this case. D Figure (2)
Problem 1.12 Determine the viscosity of a liquid having kinematic viscosity 6 stokes and specific gravity 1.9.
A square block has 320 mm bottom sides dimensions, weighing W is 1.4 kN on an edge slides down an incline angle 0 is 20° on a film of oil 6 mm thickness, as shown below. Assuming a linear velocity profile in the oil. The viscosity of the oil is 0.009 Pa.s. W y Determine the force acting on the block, F. What is the velocity of the block, V?
1.The density P Determine how the density varies with pressure along the depth h. The density at the surface of the fluid is of a fluid varies with depth h, although its bulk modulus K can be assumed constant. Po. 2.A circular disc of diameter (D) is slowly rotated with angular velocity of ( w1) in a liquid of large viscosity (u) at a small distance (h) from another moving disc at counter clockwise rotation of (@2), as shown in figure (2). Derive an expression of torque (T) necessary to this case. D Figure (2)
2.27 Fluids of viscosities µ1 = 0.1 N s/m2 and 42 = 0.15 N s/m2 are contained between two plates (each plate is 1 m? in area). The thicknesses are h1 = 0.5 mm and h2 = 0.3 mm, respectively. And the upper plate moves at a velocity of 1.5 m/s. Determine the force required to move the upper plate and the fluid velocity at the interface between the two fluids. F, V h2 H2 h1 P2.27 Hint: Both Velocity and Shear stress are continuous at the fluid-fluid interface.
plz help me with this one , i would appreciate it if you can help me now. A piston with a diameter of 0.8 m and width of L=0.6 m rotates with 6 rad/s inside a cylinder that has a diameter of 1 m that filled with oil that has a viscosity of 8x10-3 N.s/m2 What is the shear force that acts on the circumference of the piston (N)? Assume the variation in velocity of the oil is linear.
1.9. Q4) A Plate 0.025 mm distant from fixed plate, moves at 60 cm/sec and requires a force of 2N per unit area i.e., 2 N/m2 to maintain this speed. Determine the fluid viscosity between the plates. F dy = 025 mm u = 60 cm/s FIXED PLATE
Answer the following. A: When the pressure of liquid is increased from 3.5 MN/m² to 6.5 MN/m² its volume is found to decrease by (0.08) percent. What is the bulk modulus of elasticity of the liquid? B: An open cylindrical tank (1.2m) in diameter and (1.8m) deep is filled with water and rotated about its central axis at (60 r.p.m). How much liquid is spill and how deep of the water at the central axis.
Find a viscosity and density of water at 26 c °
C1 (a). A lubricating oil having the dynamic viscosity of 0.057 poise and specific gravity of 1.1. Calculate () the density of oil in kg/m?, (i) the weight density of oil in N/m². ii) the kinematic viscosity in stokes, and (iv) the specific volume in m /kg. (4 Marks) C1 (b). The capillary effect in a glass tube of 2.1 mm diameter, when immersed in (1) water and (2) mercury are 8.5 mm and -2.8 mm respectively. Calculate the value of surface tension in contact with air for water and mercury in N/m. Take, the contact angle for water =0° and mercury =130°. (3 Marks) (Enter only the values by referring to the unit given. Also, upload the handwritten answers in the link provided) C1(a).6).the density of oil in kg/m (1 Mark) C1(a). (i) the weight density of oil in N/m? (1 Mark) C1(a). (ii) the kinematic viscosity in stokes (1 Mark) C1a). (iv) the specific volume in m?/kg (1 Mark) C1 (b). 1.the value of surface tension (water) in N/m (1.5 Marks) C1 (b). 2. the value of surface tension…
2. A flat plate weighing 1 N has a surface area of 0.1 m2. It slides down an inclined plane at 30°to the horizontal, at a constant speed of 3 m/s. If the inclined plane is lubricated with an oil of viscosity 0.1 N.S/m2, find the thickness of the oil film.

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