The mass and radius of the earth are `5.975 xx 10^24` kg and `6.37xx 10^6` m respectively. Calculate the average earth's density to correct significant figures. Take `pi=3.142`.

The radius of the earth is 6.37 xx 10^(6) m and its mass is 5.975 xx 10^(24) kg . Find the earth's average density to approopriate significant figures.

Mass of earth is (5.97 xx 10 ^(24)) kg and mass of moon is (7.35 xx 10 ^(22)) kg. What is the total mass of the two ?

The mass of the Earth is 6 xx 10^(24) kg and its radius is 6400 km. Find the acceleration due to gravity on the surface of the Earth.

Take the mean distance of the moon and the sun from the earth to be 0.4 xx 10^(6) km and 150 xx 10^(6) km respectively. Their masses are 8 xx 10^(22) kg and 2 xx 10^(30) kg respectively. The radius of the earth of is 6400 km . Let DeltaF_(1) be the difference in the forces exerted by the moon at the nearest and farthest points on the earth and DeltaF_(2) be the difference in the force exerted b the sun at the nearest and farthest points on the earth. Then, the number closest to (DeltaF_(1))/(DeltaF_(2)) is :

The mass of the earth is 6.0 xx 10^(24) kg and its radius is 6.4 xx 10^(6) m . How much work will be done in taking a 10 kg body from the surface of the Earth to infinity ? What will be the gravitational potential energy of the body on the Earth's surafce ? G = 6.67 xx 10^(-11) Nm^(2) kg^(-2) .

The earth has a mass of 6 xx 10^(24) kg and a radius of 6.4 xx 10^(6)m . Calcualte the amount of work that must be done to slow down its rotation so that duration of day becomes 30 hrs instead of 24 hours. Moment of inertia of earth = (2)/(5)MR^(2) .

The mass of the earth is 6 xx 10^(24) kg . The constant of gravitation G = 6.67 xx 10^(-11) "N-m"^(-2) kg^(-2) . The potential energy of the earth and moon system is -7.79 xx 10^(28) J . Determine the mean distance between earth and moon.

Ratio of the mass of the Earth (5.98xx10^(24)kg) to the average mass of human (60 kg) is

Find the distance of a point from the earth's centre where the resultant gravitational field due to the earth and the moon is zero The mass of the earth is 6.0 xx 10^(24)kg and that of the moon is 7.4 xx 10^(22)kg The distance between the earth and the moon is 4.0 xx 10^(5)km .