Escape velocity on the earth

An object is thrown vertically upwards from the surface of the earth with a velocity x times the escape velocity on the earth (x lt 1) , then the maximum height ot which its rises from the centre of the earth is (radius of earth is R)

The escape velocity for the earth is v_(e) . The escape velocity for a planet whose radius is four times and density is nine times that of the earth, is

The escape velocity of the earth is 11.2 km/s. For a planet whose mass and radius are twice those of the earth, the escape velocity will be

The mass of the earth is 9 times that of the mars. The radius of the earth twice that of the mars. The escape velocity of the earth is 12km//s . The escape velocity on the mars is ........ km//s

The escape velocity for the earth is V_(e) . The escape velocity for a planet whose radius (1)/(4) th radius of earth and mass haif that of earth is

The escape velocity for the earth is 11.2 km / sec . The mass of another planet is 100 times that of the earth and its radius is 4 times that of the earth. The escape velocity for this planet will be

The escape velocity for the earth is 11.2 km / sec . The mass of another planet is 100 times that of the earth and its radius is 4 times that of the earth. The escape velocity for this planet will be