name the ability of machine to build analytical modles​

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]

Answer:

Here's your answer.

A = BiCl3

B = BiOCl

C = Bi

D = HCl

hope it helps.

Answer:

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Answer:

cotton is used in summer season where as jute is not used

Answer:

Cotton

Cotton is a pure cellulose staple fibre that grows around the seeds in the boll of the cotton plant. Near about 30% of the total fiber consumption on earth is cotton. It can be harvested both by manual and by machine method. Previously it was harvested by hand by the farmers but now a day it is harvested by mechanical method. It grows well in warm weather.

The fibre is spun into yarns and the yarns are woven or knitted into breathable textile fabrics. These fabrics are used to make clothing, towels, mats, bags, home textiles, socks, underwear, fishing nets etc. Products made from cotton are comfortable to wear resistant to static electricity.

Jute

It is a natural and one of the strongest fibres. It is also the cheapest among all the fibres. Like hemp, and flax it is a bast fibre. Jute plant grows well in the tropical countries like Bangladesh and India. Jute fibre obtained from the bark of the jute plant. It is cultivated traditionally and its cultivation is similar conditions to organic farming.

Little jute plant can be eaten as vegetable. It is used to make curtains, paper, shoes, carpet backing, backing cloth, sack, Lounge Chairs, lunch bags, heavy ropes etc. It can also be blended with cotton to make premium quality products like shirts, trousers, coats and other form of clothing