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प्रश्न
The work done by the Sun’s gravitational force on the Earth is __________.
विकल्प
always zero
always positive
can be positive or negative
always negative
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उत्तर
The work done by the Sun’s gravitational force on the Earth is can be positive or negative.
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संबंधित प्रश्न
A planet moving along an elliptical orbit is closest to the Sun at distance r1 and farthest away at a distance of r2. If v1 and v2 are linear speeds at these points respectively. Then the ratio `"v"_1/"v"_2` is
The magnitude of the Sun’s gravitational field as experienced by Earth is
Will the angular momentum of a planet be conserved? Justify your answer.
Define the gravitational field.
Write unit of the gravitational field.
Is potential energy the property of a single object? Justify.
The work done by Sun on Earth in one year will be
If a comet suddenly hits the Moon and imparts energy which is more than the total energy of the Moon, what will happen?
If the ratio of the orbital distance of two planets `"d"_1/"d"_2` = 2, what is the ratio of gravitational field experienced by these two planets?
Earth revolves around the Sun at 30 km s−1. Calculate the kinetic energy of the Earth. In the previous example, you calculated the potential energy of the Earth. What is the total energy of the Earth in that case? Is the total energy positive? Give reasons.
