Advertisements
Advertisements
प्रश्न
The magnitude of the Sun’s gravitational field as experienced by Earth is
विकल्प
same over the year
decreases in the month of January and increases in the month of July
decreases in the month of July and increases in the month of January
increases during day time and decreases during night time
Advertisements
उत्तर
decreases in the month of July and increases in the month of January
APPEARS IN
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
If the distance between the Earth and Sun were to be doubled from its present value, the number of days in a year would be ___________.
The gravitational potential energy of the Moon with respect to Earth is ____________.
An object of mass 10 kg is hanging on a spring scale which is attached to the roof of a lift. If the lift is in free fall, the reading in the spring scale is ___________.
Will the angular momentum of a planet be conserved? Justify your answer.
Derive the expression for gravitational potential energy.
Prove that at points near the surface of the Earth, the gravitational potential energy of the object is U = mgh.
The work done by Sun on Earth at any finite interval of time is
If a comet suddenly hits the Moon and imparts energy which is more than the total energy of the Moon, what will happen?
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.
