The fraction of a floating object of volume $V_0$ and density $d_0$ above the surface of a liquid of density $d$ will be

$A$ ball of relative density $0.8$ falls into water from a height of $2 \ m$. The depth to which the ball will sink is ........ $m$ (neglect viscous forces):

$A$ body is suspended by a light string. The tensions in the string when the body is in air,when the body is totally immersed in water,and when the body is totally immersed in a liquid are respectively $40.2 \,N$,$28.4 \,N$,and $16.6 \,N$. The density of the liquid is

$A$ piece of granite floats at the interface of mercury and water contained in a beaker as shown in the figure. If the densities of granite,water,and mercury are $\rho, \rho_1$,and $\rho_2$ respectively,the ratio of the volume of granite in water to the volume of granite in mercury is:

Two non-mixing liquids of densities $\rho$ and $n\rho$ $(n > 1)$ are put in a container. The height of each liquid is $h$. $A$ solid cylinder of length $L$ and density $d$ is placed in this container. The cylinder floats with its axis vertical and a length $pL$ $(p < 1)$ submerged in the denser liquid. The density $d$ is equal to:

What is buoyancy?