A hollow sphere of inner radius 8.0 cm and outer radius 9.0 cm floats half-submerged in a liquid of density 820 kg/`m^(3)`. (a) What is the mass of the sphere? (b) Calculate the density of the material of which the sphere is made.

A hollow sphere of innder radius 9 cm and outer radius 10 cm floats half-submerged in a liquid of specific gravity 0.8. calculate the density of the material of which the sphere is made. What would be the density of a liquid in which the hollow sphere would just floats completely sumberged. ?

A hollow spherical body of inner and outer radii 6 cm, and 8 cm respectively floats half submerged in water. Find the density of the material of the sphere.

A hollow sphere of external and internal diameter 4 cm and 2 cm, respectively, floats in a liquid of density 3.5 g cm^(-3) . The level of the liquid coincides with the center of the sphere. Calculate the density of the material of the sphere.

A hollow metallic sphere has inner and outer radii, respectively as 5 cm and 10 cm if the mass of the sphere is 2.5 kg, find (a) density of the material, (b) relative density of the material of the sphere.

The volume of the hollow portion of a sphere is 3/4 of the external volume of the sphere. If it floats in a liquid of relatived density 3/2 , half of its external volume immersed, the relative density of the material of the solid is :

If the error in measuring the radius of the sphere is 2% and that in measuring its mass is 3%, Then the error in measuring the density of material of the sphere is:

The moment of inertia of hollow sphere (mass M) of inner radius R and outer radius 2R, having material of uniform density, about a diametric axis is

A metallic sphere of mass 3 kg in air is held by a string so as to be completely immersed in a liquid of relative density 0.8. The relative density of metallic sphere is 10. The tension in the string is :-

A solid sphere of radius 5 cm floats in water. If a maximum load of 0. kg can be put on it withot wetting the load find the specific gravityof the material of the sphere.

A sphere of radius 10cm and density 500kg//m^(3) is under water of density 1000kg//m^(3) The acceleration of the sphere is 9.80m//s^(2) upward viscosity of water is 1.0 centipoise if g=9.81m//s^(2) the velocity of the sphere is