What is the mass of the moon?

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Important Questions on Physics

EASY

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The weight of an object on a planet is

0.25

times of its weight on earth. A pendulum clock that ticks once every second on earth is taken to the planet. In that planet the clock would tick once in every.

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How many planets have rings around them?

HARD

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The mass of a plant is twice and its radius is three times that of the earth. The weight of a body, which has a mass of $5 k g$ , on that planet will be

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The weight of a body is

9.8 N

, when

g = 9.8 m s^{- 2}

the mass of the body is

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The earth takes $1$ year to make a complete revolution around the sun whereas Pluto takes nearly $248$ of our earth years to orbit the sun. What is the main reason for this?

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The ratio of gravitational acceleration on the surface of Earth and Moon is

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Which is called Earth's satellite?

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The pole star appears to be stationary when observed from the earth. This is because pole star is :

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What is the name of $400 km$ thick bright layer around the sun?