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Why is it not wise to the touch the inne...

Why is it not wise to the touch the inner surface of an umbrella while standing beneath it during rain?

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MBD PUBLICATION-MECHANICAL PROPERTIES OF FLUID (LIQUID AT REST)-QUESTION BANK
  1. From where the energy come when liquid rises against gravity in a capi...

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  2. What are the factors affecting surface tension?

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  3. Why is it not wise to the touch the inner surface of an umbrella while...

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  4. Explain how a pond skater can walk on water but but a person cannot.

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  5. Distinguish between cohesion and adhesion.

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  6. Distinguish between surface tension and surface energy.

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  7. Explain why a small piece of soap fixed to the back of a card board th...

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  8. A water drop has a diameter of 2 xx 10^-5m. Calculate the excess press...

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  9. What is the nature of inter-molecular forces at short distance and at ...

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  10. Explain why water spreads but not the mercury on clean glass plate.

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  11. explain what is meant by surface energy of a liquid. Show that surface...

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  12. What will be the rise of water when a capillary tube of radius 0.5mm i...

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  13. Distinguish between cohesion and adhesive forces.

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  14. Why does water spread over and wet a glass ?

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  15. Distinguish between surface tension and surface energy.

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  16. Calculate the excess pressure between inside and outside of soap bubbl...

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  17. Free surface of a liquid behaves like a stretched membrane. Explain br...

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  18. Explain what happens to the energy used to blow a soap bubble ?

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  19. Why a needle may float on clear water but sink when some detergent is ...

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  20. Explain why water wets glass.

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