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The blades of a windmill sweep out a cir...

The blades of a windmill sweep out a circle of area A.
What is the kinetic energy of the air?

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`K= pAv^(3)t"/"2`
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NCERT TAMIL-WORK, ENERGY AND POWER-EXERCISES
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  2. A body is initially at rest. It undergoes one-dimensional motion with ...

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  4. A body constrained to move along the Z-axis of a co-ordinate system is...

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  7. A molecule in a gas container hits a horizontal wall with a speed of 2...

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  10. The bob A of a simple pendulum released from 30^(@) to the vertical hi...

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  11. The bob A of a simple pendulum is released from a horizontal position ...

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  13. A particle of mass 0.5kg travels in a straight line with velocity v=ax...

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  14. The blades of a windmill sweep out a circle of area A. (a) If the wind...

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  15. The blades of a windmill sweep out a circle of area A. What is the k...

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  16. The blades of a windmill sweep out a circle of area A. (a) If the wind...

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  17. A person trying to lose weight (dieter ) lifts a 10 kg mass through 0....

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  18. A person trying to lose weight (dieter ) lifts a 10 kg mass through 0....

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  19. A family uses 8kW of power. (a) Direct solar energy is incident on the...

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  20. A family uses 8kW of power. (a) Direct solar energy is incident on the...

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