Our Planet Earth

On planet Earth, there is no centrifugal force at the

In our own planet Earth 361,419,000 square kilometre of area is covered with waer and 148,647,000 square kilometre of area is covered by land, find the approximate ratio of area covered with water to area covered by land by converting these numbers into scientific notation.

The nearest planet to earth is ……… .

Imagine a hypothetical planet flat earth of thickness t having same gravity on its surface as our Earth .Assume Flat earth to be infinite plate of same uniform density as our Earth which is a uniform solid sphere of Radius R.If t=(4R)/(n) what is n ?

Earth is __ planet from the sun

The escape velocity from the earth is v_e . If both the mass and the radius of a planet are twice that of the earth, then the escape velocity from that planet will be

The mass and diameter of a planet are twice those of earth. The period of oscillation of pendulum on this planet will be (if it is a second's pendulum on earth )

The mass and diameter of a planet are twice those of earth. The period of oscillation of pendulum on this planet will be (if it is a second’s pendulum on earth)