If the ratio of the weights of a body of mass 'm' measured on two different planets 'A' and 'B' is 1 : 2 and the ratio of radii of two planets 'A' and 'B' is 2 : 4, respectively, then the ratio of the masses of two planets is, respectively ______ .

The ratio of KE of a planet at the points 1 and 2 is :

The distance of two planets from the sun are 10^(13) and 10^(12) m respectively. The ratio of the periods of the planet is

Then ratio of orbital radii of two satellites of a planet is 1:2 . what is the ratio of their time period?

The distance of two planets from the sun are 10^(12)m and 10^(10)m respectively. Then the ratio of their time periods is

The ratio of the masses and radii of two planets are 2 : 3 and 4 : 9. What is the ratio of the escape speed at their surface ?

The escape velocity of a satellite from the surface of a planet is sqrt(2) times the orbital velocity of the satellite. If the ratio of the masses of two given planets is 1 : 4 and that of their radii is 1 : 2, respectively, then find the ratio of escape velocities of a satellite from the surfaces of two planets.

The ratio of the masses and radii of two planets are 4:6 and 8:18 . What is the ratio of the escape speed at their surface ?

The ratio of the weight of a body on the Earth’s surface to that on the surface of a planet is 9 : 4. The mass of the planet is 1/9 of that of the Earth. If ‘R’ is the radius of the Earth, then the radius of the planet is where n is ___________ . (Take the planets to have the same mass density)