The ratio of gravitational mass and inertial mass is

The height of the point vertically above the earth’s surface at which the acceleration due to gravity becomes 1% of its value at the surface is (R is the radius of the earth)

A bomb blasts on the moon. Its sound will be heard on earth after

To determine time, an astronaut in earth satellite should use

The length of the day from today when the sun is directly overhead till tomorrow again when the sun is directly overhead can be determined by the

The orbital velocity of Jupiter is

The number of communication satellites necessary for intercontinental telecast will be

Imagine that earth is rotating at such an angular speed that a body becomes weightless at the equator. If weight of the same body at north pole is 100 kg wt, its weight at a placed of latitude 600 will be