What is buoyancy and centre of buoyancy?

What do you understand by buoyancy and centre of buoyancy ?

What is a green data centre ?

Force OF Buoyancy

The centre of gravity and the centre of buoyancy of a floating body, in stable equilibrium, (i) are always same. (ii) are always along a same vertical line.

An aluminum sphere is dippend into water ar 10^C . If the temperature is inceraded, theforce of buoyancy

A composite rod whose upper half has a density (rho)/(4) and lower half has a density of (3rho)/(2) is immersed vertically in a liquid of density rho . To what length it shoul be immeresed so that centre of buoyancy coincides with centr of mass of the rod ? suppose the length is (x l)/(14) Find x .

In order that a floating object be in a stable equilibrium its centre of buoyancy should be

An aluminium sphere is dipped into water at 10^@C .If the temperature is increased, the force of buoyancy

A wooden rod of a uniform cross section and of length 120 cm is hinged at the bottom of the tank which is filled with water to a height of 40 cm . In the equilibrium position, the rod makes an angle of 60^@ with the vertical. The centre of buoyancy is located on the rod at a distance (from the hinge) of