A saturn year is 29.3 times the earth year. How far is the saturn from the sun if the earth's `1.5 xx 10^8` km away from the sun.

A planet's year is 11 times the earth's year. Calculate the distance of this planet from the sun if the distance of the earth is 1.50xx10^8 km from the sun.

Calculate the force of gravitation between the earth and the Sun, given that the mass of the earth = 6 xx 10^24 kg and mass of the Sun = 2 xx 10^30kg . The average distance between the two is 1.5 xx 10^11 m .

A rocket is fired from the earth towards the sun. At what distance form the earth's centre is the gravitational force on the rocket zero? Mass of the sun = 2 xx 10^20 kg and mass of earth = 6 xx 10^24 kg and orbital radius 1.5 xx 10^-8 km.

The orbital radius of earth in 1.49 xx 10^13 cm. Calculate the mass of sun.

As you have learnt in the text, a geostationary satellite orbits the earth at a height of nearly 36,000 km from the surface of the earth. What is the potential due to earth’s gravity at the site of this satellite? (Take the potential energy at infinity to be zero). Mass of the earth = 6.0 xx 10^24 kg, radius = 6400 km

How will you ‘weigh the sun', that is estimate its mass? The mean orbital radius of the earth around the sun is 1.5 xx10^8 km.

The escape speed of a projectile on the earth’s surface is 11.2 km s^-1 A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets.