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The earth and other planets ...........a...

The earth and other planets ...........around the sun. (revolve, rotate, move with constant velocity)

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revolve
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A planet is revolving around the Sun in an elliptical orbit. Its closest distance from the sun is r_(min) . The farthest distance from the sun is r_(max) if the orbital angular velocity of the planet when it is nearest to the Sun omega then the orbital angular velocity at the point when it i at the farthest distanec from the sun is

The earth (mass = 6 xx 10^(24) kg) revolves around the sun with an angular velocity of 2 xx 10^(-7) rad/s in a circular orbit of radius 1.5 xx 10^8 km. The force exerted by the sun on the earth, in newton, is .........

In the Rutherford’s nuclear model of the atom, the nucleus (radius about 10^(–15) m) is analogous to the sun about which the electron move in orbit (radius ~~ 10^(–10) m) like the earth orbits around the sun. If the dimensions of the solar system had the same proportions as those of the atom, would the earth be closer to or farther away from the sun than actually it is? The radius of earth’s orbit is about 1.5 xx 10^(11) m. The radius of sun is taken as 7 xx 10^8 m .

Earth's orbit is an ellipse with eccentricity 0.0167. Thus the earth's distance from the sun and speed as it moves around the sun varles from day-to-day. This means that the length of the solar day is not constant through the year. Assume that the earth's spin axis is normal to its orbital plane and find out the length of the shortest and the longest day. A day should be taken from noon to noon. Does this explain variation of length of the day during the year?

The orbit of the earth around the sum is an ellipse. The sun is at one of the focus of this ellipse. If the length of its major axis of this ellipse. If the leght of its major axis of this ellipse is 30 million. Km. and eccentricity is 0,.0167 then find minimum and maximum distance of the earth from the sun.

KUMAR PRAKASHAN-GRAVITATION-Fill in the blanks :
  1. The mass of an object on the earth is 10 kg. then its mass on the moon...

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  2. The mass of an object is 30 kg, then Its weight on the moon would be ....

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  3. The weight of an object on the earth is 98 N, then its mass would be …...

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  4. A force 100N is applied perpendicularly on a surface of 2 m^2, then th...

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  5. The mass and volume of a solid steel cuboid is 156 g and 20 cm^3 respe...

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  6. The earth is ......... about its own (imaginary) axis in space. (revol...

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  7. The earth and other planets ...........around the sun. (revolve, rotat...

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  8. An object moving in the opposite direction (upward direction) of the g...

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  9. Weight of a body is............ on the equator than its weight on the ...

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  10. The direction of weight of an object is in (upward direction, in the d...

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  11. 1 pascal = 1 .......... ms^2, N m^(-2) kg^(-2), Nm^(-2), N m^(2) kg^(-...

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  12. The initial velocity of a freely falling object ("more, "9.8ms^(-1)". ...

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  13. The distance between two objects is doubled. The gravitational force a...

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  14. What do we call the gravitational force between the earth and an objec...

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  15. The buoyant force acting on a object floating on the surface of the li...

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  16. If the mass of object is 42kg on earth then what is the weight of obje...

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  17. The mass of an object whose weight on the earth is 490 N is ………...kg. ...

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  18. A ball falling freely from the terrace of a building takes 3s to reach...

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  19. ………….principle/law is used in designing ships and submarines. (Archime...

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  20. ......... is used to determine the purily of a sample of milk. (Hydrom...

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