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Extension of troposphere above Earth's surface is

A body weighs 63 N on the surface of the Earth. At a height h above the surface of Earth, its weight is 28 N while at a depth h below the surface of Earth, the weight is 31.5 N. The value of h is

A satellite of mass m is revolving round the Earth at a height R above the surface of the Earth. If g is the gravitational intensity at the earth surface and R is the radius of the Earth, then the kin

The earth receives its surface radiation from the sun at the rate of 1400 W/m2. The distance of the centre of the sun from the surface of the earth is 1.5 ´ 1011 m and the radius of the sun is 7

Radius of the Earth is 6000 km. Weight of a body on the surface of Earth is 120 kg wt. If it is taken to a height of 2000 km above the surface of Earth, its weight is

An artificial satellite is moving in a circular orbit around the Earth with a speed equal to half the magnitude of escape velocity from the Earth. The height of satellite above the surface of Earth is

The gravitational potential difference between the surface of a planet and a point 20 m above the surface, is 2 joule/kg. If the gravitational field is uniform, then the work done in carrying a 5 kg b