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Which of the following quantities remain...

Which of the following quantities remain constant in a planetary motion (consider elliptical orbits)as seen from the sun?

A

Speed

B

Angular speed

C

Kinetic energy

D

Angular momentum

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The correct Answer is:
D
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CP SINGH-GRAVITATION-EXERCISE
  1. A satellite revolves around the earth in an elliptical orbit. Its spee...

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  2. For a planet moving and the sun in an elliptical orbit, which of the f...

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  3. Which of the following quantities remain constant in a planetary motio...

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  4. Figure shows the motion of a planet around the Sun S in an elliptical ...

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  5. The earth E moves in an elliptical orbit with the sun S at one of the ...

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  6. The largest and the shortest distance of the earth from the sun are r(...

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  7. A plenet moving along an elliptical orbit is closest to the sun at a d...

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  8. If the distance between the earth and the sun were half its present va...

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  9. The mean radius of the earth's orbit of mercury is 6xx10^(10)m. The me...

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  10. The radius of the earthR and acceleration due to gravity at its surfac...

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  11. In the previous problem, the minimum speed with which the body must be...

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  12. If the acceleration due to gravity at the surface of the earth is g, t...

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  13. A small mass m is moved slowly from the surface of the earth to a heig...

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  14. A particle is projected vertically upwards with a velocity sqrt(gR), w...

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  15. A projectile is projectile with velocity kv(e) in vertically upward di...

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  16. An asteroid of mass m is approaching earth, initially at a distance 10...

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  17. The gravitational force between two objects is proportional to 1//R (a...

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  18. Suppose the gravitational force varies inversely as the nth power of d...

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  19. The distance of two satellites from the surface of the earth R and 7R....

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  20. A satellite is launched into a circular orbit of radius R around the e...

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