List of top Physics Questions on Density and Pressure

Equal masses of two substances of densities _1 and _2 are mixed. Density of mixture is:

A submarine is designed to withstand an absolute pressure of 100 atm. How deep can it go below the water surface? (Consider the density of water = 1000 kg m⁻³, 1 atm = 1 $\times$ 10⁵ Pa and g = 10 m/s²)

In the given (V-T) diagram, what is the relation between pressures $P_1$ and $P_2$ ?