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Why is the tip of the nib of your writing pen split?

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BINA LIBRARY-PROPERTIES OF FLUIDS-EXERCISE
  1. What are various types of energies of a flowing liquid? Express them i...

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  2. Explain the principle of the action of a siphon. What are the conditio...

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  3. Why is the tip of the nib of your writing pen split?

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

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

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

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  7. Why water wets glass, but not mercury?

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

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

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  10. Can two streamlins cross each other?

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

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

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  13. Why does deep water run slow?

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  14. Why does a flag flutter in breeze?

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

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

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

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

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

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  20. Machine parts are jammed in winter. Why ?

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