The mass and radius of a solid sphere is given by M = `2*10^30` kg and R = `7*10^5` km respectively. The pressure at the centre is about `x*10^14` N/`m^2`, x=?.

The mass and radius of a solid cylinder be M and R respectively. Its M.I. about a generator line will be:

Two bodies of mass 2 kg and 5 kg have position (1 m, 2 m, 1 m) and (3 m, 2 m, -1 m) respectively. The position vector of centre of mass is

The uncertainties in position and the velocity of a particle are 10^(10) m and 10× 10^(−24).sec^(−1) respectively. The mass of the particle in kg is

The uncertainties in position and the velocity of a particle are 10^(10) m and 1× 10^(−34).sec^(−1) respectively. The mass of the particle in kg is

The uncertainties in position and the velocity of a particle are 10^(-10) m and 1× 10^(−24).sec^(−1) respectively. The mass of the particle in kg is

Two metal spheres are falling through a liquid of density 2xx10^(3)kg//m^(3) with the same uniform speed. The material density of sphere 1 and sphere 2 are 8xx10^(3)kg//m^(3) and 11xx10^(3)kg//m^(3) respectively. The ratio of their radii is :-

The uncertainties in position and the velocity of a particle are 10^(-10) m and 10× 10^(−22).sec^(−1) respectively. The mass of the particle in kg is

The uncertainties in position and the velocity of a particle are 10^(-10) m and 10× 10^(−24).sec^(−1) respectively. The mass of the particle in kg is

The radius of gyration of a uniform solid sphere of radius R., about an axis passing through a point R/2 away from the centre of the sphere is:

The mass of a spaceship is 1000kg. It is to be launched from the earth's surface out into free space. The value of g and R (radius of earth) are 10m/s^2 and 6400 km respectively. The required energy for this work will be: