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An engine pumps water through a hose pip...

An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of `2 ms^(1)`. The mass per unit length of water in the pipe is `100 kgm^(-1)`. What is the power of the engine?

A

400 W

B

200 W

C

100 W

D

800 W

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SL ARORA-Work, Energy and power-EXERCISE
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  2. A body projected vertically from the earth reaches a height equal to e...

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  10. A shell in its flight, explodes into four unequal parts. Which of the ...

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  11. A body of mass m moving with velocity 3km//h collides with a body of m...

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  12. A metal ball of mass 2 kg moving with speed of 36 Km//h has a collisio...

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  13. Two identical balls A and B collide head on elastically. If velocities...

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  14. The coefficient of restitution e for a perfectly elastic collision is

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  15. A ball moving with velocity 2 ms^(-1) collides head on with another st...

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  16. Two particles A and B, move with constant velocities vec(v(1))" and "v...

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  17. Two sphere A and B of masses m(1) and m(2) respectivelly colides. A is...

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  18. On a friction surface a block a mass M moving at speed v collides elas...

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  19. Two particles of masses m(1),m(2) move with initial velocities u(1) an...

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  20. Consider a drop of rain water having mass 1 g falling from a height of...

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