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What is viscosity?...

What is viscosity?

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Viscosity of gases ....................... With temperature, Whereas viscosity of liquids ......................... With temperature. (Increases / decreases)

What is the dimensional formula of coefficient of viscosity?

The terminal velocity of a copper ball of radius 2mm falling through a tank of oil at 20°c is 6.5cms^-1 . Calculate the viscosity of the oil at 20°c. .(Hints: Density of oil is is 1.5 × 103 kgm^-3 , density of copper is 8.9 ×10^3 kgm^-3 )

The unit of coefficient of viscosity in c.g.s system is…………. .

Derive an expression for the terminal velocity of a ball in terms of coefficient of viscosity of the medium.

MAXIMUM PUBLICATION-MODEL PAPER 1-EXAMPLE
  1. Write down the unit of impulse.

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  2. If the distance between two bodies that attract each other is doubled,...

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  3. A stone and a sheet of paper are dropped.together. Which of the follow...

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  4. Write down an activity to prove inertia of rest.

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  5. A car starts from rest and covers 25m in 5s. Calculäte the acceleratio...

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  6. What are the two factors that influence buoyancy.

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  7. Find out the reasons for the following. A ship floats on water.

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  8. Give reasons A piece of chalk is used to blot ink.

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  9. Find out the reasons for the following. When a body was placed in a ...

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  10. Find out the displacement between 10 s and 20 s from the graph.

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  11. Give three differences between mass and weight.

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  12. State universal Iaw of gravitation. Derive the formula for finding gra...

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  13. Rockets are used to launch artificial satellites. State the law of m...

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  14. Rockets are used to launch artificial satellites. Write down the life...

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  15. Rockets are used to launch artificial satellites. Write down a class...

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  16. If the velocity of a train starting from rest becomes 72 km/h in 400 s...

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  17. If the velocity of a train starting from rest becomes 72 km/h in 400 s...

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  18. What is viscosity?

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  19. What is the relation between viscosity and temperature?

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  20. Why is it said that the body of a person who gets an electric shock sh...

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