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The escape speed of a projectile on the ...

The escape speed of a projectile on the earth's surface is 11.2 km `s^(-1)`. A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets.

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To solve the problem, we need to determine the speed of a body projected with a speed three times the escape speed of Earth when it is far away from the Earth. We will use the principle of conservation of energy. ### Step-by-Step Solution: 1. **Identify the Escape Speed**: The escape speed from the Earth's surface is given as \( v_e = 11.2 \, \text{km/s} \). 2. **Calculate the Initial Speed**: ...
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NCERT ENGLISH-GRAVITATION-EXERCISE
  1. Choose the correct alternative : (a) If the zero of the potential en...

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

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  3. A comet orbits the Sun in a highly elliptical orbit. Does the comet ha...

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

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  8. The mean orbital radius of the Earth around the Sun is 1.5 xx 10^8 km....

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  9. A Saturn year is 29.5 times that earth year. How far is the Saturn fro...

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

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

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  12. A rocket is fired vertically with a speed of 5 kms^(-1) from the earth...

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

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

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  16. Two heavy sphere each of mass 100 kg and radius 0.10 m are placed 1.0 ...

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  17. A geostationary satellite orbits the Earth at a height of nearly 36,00...

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  18. A star 2.5 times the mass of the sun and collapsed to a size of 12km r...

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  19. A spaceship is stationed on mars. How much energy must be expended on ...

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  20. A rocket is fired fired vertically from the surface of Mars with a spe...

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