The velocity of water in river is 5 m/s at the surface. The river is 5 m deep. What is viscous forces per unit area between horizontal layer of water? The viscosity of water is 10-3 poiseuille.​

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Answers 2

Answer:

option d because the velocity of water is at 10 power 3 and river is in 5m deep

Given:

  • the velocity of water in the river is 5m/s at the surface
  • The viscosity of water is 10^-3
  • The river is 5m deep

To find: what is viscous forces per unit area between a horizontal layer of water?

Explanation:

as we know that,

velocity at the bottom of the river will be zero,

Velocity gradient,

                           =  dv/dy

                           = 18×[tex]10^{3} [/tex]/60×60×5

                           = 1[tex]s^{-1} [/tex]

Now,

The viscous force,

                         F = ηA[tex]\frac{dv}{dY} [/tex]  is tangential to the area

by using the formula of Shear stress,

                          = F/A

                          = η[tex]\frac{dv}{dY} [/tex]

                          = [tex]10^{-3} [/tex]×1

                          = [tex]10^{-3} [/tex] [tex]\frac{N}{m^{2} } [/tex]

Hence the viscous force is [tex]10^{-3} [/tex] [tex]\frac{N}{m^{2} } [/tex]

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Other related questions that may help you

If the diameter of a circle is 21 cm, what will be its circumference?

Answer:

circumference is 66cm

Step-by-step explanation:

As the formula of circumference of a circle is 2pir

where r is the radius of the circle.

here, diameter is given ,ie 2r =21cm

put the values in the formula and use pi=22/7.

Hence, you will get your answer

Answer:

Answer is 65.97 (65.9734457) This is the Answer if you use the value of π is 3.14

Answer is 66 cm This is the answer if you use the value of π is 22/7

Step-by-step explanation:

Diameter = 2 × r

Diameter = 2 × rcircumference = 2πr

Diameter = 2 × rcircumference = 2πr = π × diameter (2 × r(radius)

Diameter = 2 × rcircumference = 2πr = π × diameter (2 × r(radius)

= 65. 97

21 × 22/7

= 3 × 22

= 66

The diagram shows where fossils of two different species, Lystrosaurus and Glossopteris, have been found on more than one continent. options: A) to determine how the rocks formed on the different continents B) to predict how the continents might look in the future with continued plate movement C) to explain the process of how the continents are in different locations today than in the past D) to support the theory that these continents were once joined together but then moved apart over time
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Answer:

The correct answer is option D

Explanation:

Glossopteris is significant for understanding Earth's geological history and scientific theories. Scientist Alfred Wegener suggested that the continents were previously connected to form a supercontinent known as Pangaea around the turn of the 20th century. Wegener proposed a theory known as the Continental Drift Theory, according to which the continents split up and migrated to their present-day positions. As seen in the picture and detailed below, there is proof for his assertion on each of the continents:

The continents fit together like jigsaw pieces.

  • Glacial grooves (striations) correspond to neighbouring continents.
  • Mountain ranges and coal reserves correspond to nearby continents.
  • On adjacent continents, fossils of Glossopteris and reptiles Lystrosaurus, Cynognathus, and Mesosaurus were discovered.
  • Glossopteris seeds were too large to be dispersed by the wind.
  • Only capable to swimming in fresh water, Mesosaurus could not survive an ocean voyage.
  • Because they couldn't swim, Lystrosaurus and Cynognathus couldn't survive an ocean voyage.

Learn more about the information

  • https://brainly.in/question/11445662?referrer=searchResults
  • https://brainly.in/question/11299361?referrer=searchResults
A solution of white solid (A) gave white precipitate (B) with water. On treatment with HCl, the ppt B produced A. The solution of A gives black precipitate (C) on reacting with sodium stanite and NaOH The compound A gives a colourless gas (D) with concentrated H, SO4. The gas is soluble in water and its aqueous solution produce with it precipitate with Hy, (NO3), but no precipitate with Hg(NO3)2. Identify (A) to (D) and write the chemical reactions involved​

Answer:

Here's your answer.

A = BiCl3

B = BiOCl

C = Bi

D = HCl

hope it helps.

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name the ability of machine to build analytical modles​

Answer:

It is seen as a part of artificial intelligence. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so.

Answer:

Explanation:

[Machine learning algorithms] build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so.

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