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Find the work done in blowing a soap bub...

Find the work done in blowing a soap bubble of surface tension `30xx10^-3 Nm^-1` from 20mm radius to 40mm radius.

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BINA LIBRARY-PROPERTIES OF FLUIDS-EXERCISE
  1. Dust generally settles down in a closed room. Why?

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  2. Machine parts are jammed in winter. Why ?

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

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

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  5. Calculate the energy spent in sprying a drop of mercury of 1 cm radius...

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  6. In a capillary tube of diameter 10^-3m, water rises to a height of 0.0...

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  7. Water rises in a capillary tube to a height 2cm. In another capillary ...

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  8. Two equal drops of water are falling through air with a steady velocit...

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  9. What should be the maximum average velocity of water in a tube of diam...

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  10. Water flows through a pipe of varying cross-section. If the velocity o...

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  11. A sphere of radius 0.25mm and of density 9000kg/m^3 falls through an ...

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  12. Two drops of water of same size are falling through air with terminal ...

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  13. Find the ternimal velocity of a steel ball 2 mm in diameter falling th...

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  14. Determine the radius of a drop of water falling through air, if it cov...

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  15. Water is flowing steadily through a horizontal pipe of non- uniform cr...

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  16. At which of the following temperatures the value of surface tension of...

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  17. When two soap bubbles of radii r1 and r2 (r2>r1)coalese, the radius of...

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  18. What change of surface energy will be noticed when a drop of radius R ...

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  19. The capillary rise in a tube of diameter 1mm when surface tension of w...

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  20. The capillary tubes of radii of 0.2 cm and 0.4 cm are dipped in the sa...

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