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Which of the following symptoms is likel...

Which of the following symptoms is likely to afflict an astronaut in space (a) swollen feet, (b) swollen face, (c) headache, (d) orientational problem.

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(b) , (c) and (d)
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NCERT TAMIL-GRAVITATION-EXERCISES
  1. Suppose there existed a planet that went around the Sun twice as fast ...

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  2. Io, one of the satellites of Jupiter, has an orbital period of 1.769 d...

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  3. Let us assume that our galaxy consists of 2.5 × 10^(11) stars each of ...

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  4. The kinetic energy of a satellite is 2 MJ. What is the total energy of...

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  5. The energy required to remove an electron in a hydrogen atom from n=10...

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  6. Does the escape speed of a body from the earth depend on (a) the mass ...

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  7. A comet orbits the sun in a highly elliptical orbit. Does the comet ha...

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  8. Which of the following symptoms is likely to afflict an astronaut in s...

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  9. In the following two exercises, choose the correct answer from among t...

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  10. For the above problem, the direction of the gravitational intensity at...

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  11. A rocket is fired from the earth towards the sun. At what distance fro...

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  12. How will you ‘weigh the sun’, that is estimate its mass? The mean orbi...

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  13. A saturn year is 29.5 times the earth year. How far is the saturn from...

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  14. A body weighs 63 N on the surface of the earth. What is the gravitatio...

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  15. Assuming the earth to be a sphere of uniform mass density, how much wo...

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  16. A rocket is fired vertically with a speed of 5 km s^(-1) from the eart...

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  17. The escape speed of a projectile on the earth’s surface is 11.2 km s^(...

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  18. A satellite orbits the earth at a height of 400 km above the surface. ...

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  19. Two stars each of one solar mass (= 2 × 10^(30) kg) are approaching ea...

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  20. Two heavy spheres each of mass 100 kg and radius 0.10 m are placed 1.0...

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