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Why does soap or detergent clean the clo...

Why does soap or detergent clean the cloths better?

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BINA LIBRARY-PROPERTIES OF FLUIDS-EXERCISE
  1. Why is the tip of the nib of your writing pen split?

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  2. Why is the surface tension concept held for liquids only and not for g...

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  3. Why does soap or detergent clean the cloths better?

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  4. Explain why rain drops are spherical while the surface of water in a p...

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  5. Why water wets glass, but not mercury?

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  6. Why does a needle float on clear water, but sinks when some detergent ...

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  7. Why does oil spread over the surface of water?

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  8. Can two streamlins cross each other?

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  9. Distinguish between streamline and turbulent flow of a liquid.

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  10. Why does velocity increase when water flowing in broader pipe enters a...

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  11. Why does deep water run slow?

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  12. Why does a flag flutter in breeze?

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  13. If a person stands near a fast moving train, there is a possibility of...

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  14. A ball-bearing falling in a tall jar of motor oil attains a constant v...

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  15. Water flows faster than honey-- explain the reason?

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  16. A bigger rain drop falls faster than smaller one. Why ?

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  17. Dust generally settles down in a closed room. Why?

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  18. Machine parts are jammed in winter. Why ?

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  19. Find the work done in blowing a soap bubble of surface tension 30xx10^...

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  20. A drop of water 1mm radius is split into 64tiny drops. Find the increa...

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