Liquid is ...... while gas is ...... . (Fill in the blank) [incompressible,compressible]

Explain why it is easier to cut an apple with a sharp knife than with a blunt knife.

$A$ closed rectangular tank is completely filled with water and is accelerated horizontally with an acceleration $a$ towards the right. Pressure is $(i)$ maximum at,and $(ii)$ minimum at:

Three liquids of equal masses are taken in three identical cubical vessels $A, B$ and $C$. Their densities are $\rho_{A}, \rho_{B}$ and $\rho_{C}$. The force exerted by the liquid on the base of the cubical vessel is

Define relative density of a substance.

Explain the hydrostatic paradox.