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The value of escape speed from the surfa...

The value of escape speed from the surface of earth is

A

elastic membrane is formed on water due to property of surface tension

B

spiders and insects are lighter

C

spiders and insects swim on water

D

spiders and insects experience upthrust

Text Solution

Verified by Experts

The correct Answer is:
A
Weight of spiders or insects can be balanced by vertical component of force due to surface tension.
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Mass and radius of a planet are two times the value of earth. What is the value of escape velocity from the surface of this planet?

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Gravitational acceleration on the surface of a planet is (sqrt6)/(11)g. where g is the gravitational acceleration on the surface of the earth. The average mass density of the planet is (2)/(3) times that of the earth. If the escape speed on the surface of the earht is taken to be 11 kms^(-1) the escape speed on the surface of the planet in kms^(-1) will be

DC PANDEY ENGLISH-FLUID MECHANICS-Taking it together
  1. Assuming that the atmosphere has the same density anywhere as at sea l...

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  2. If the angle of contact is less than 90^(@) the pressure just inside t...

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  3. The value of escape speed from the surface of earth is

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  4. If two glass plates are quite nearer to each other in water, then ther...

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  5. A tall cyclinder is filled with viscous oil. A round pebble is dropped...

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  6. A tank if filled with water upto height H. When a hole is made at a di...

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  7. A tank is filled to a height H. The range of water coming out of a hol...

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  8. The density of ice x cm^(-3) and that of water is y gcm^(-3). What is ...

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  9. Two capillary tubes P and Q are dipped in water. The height of water l...

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  10. In a surface tension experiment with a capillary tube water rises upto...

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  11. Two parallel glass plates are dipped partly in the liquid of density '...

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  12. A balloon has volume of 1000 m^(3). It is filled with hydrogen (rho=0....

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  13. A raft of mass M=600 kg floats in calm water with 7 cm submerged. When...

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  14. A cylinder of mass M and density d(1) hanging from a string, is lowere...

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  15. Which of the following statements are correct?

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  16. A piston of cross-sectional area 100 cm^(2) is used in a hydraulic pre...

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  17. An ideal fluid flows through a pipe of circular cross-section made of ...

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  18. The angle of contact at the interface of water glass is 0^(@) ethylalc...

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  19. If a sphere of mass m moving with velocity u collides with another ide...

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  20. For the arrangement shown in the figure, the force at the bottom of th...

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