As the depth increases in a vessel filled with liquid, the pressure ..........

$A$ healthy adult of height $1.7 \,m$ has an average blood pressure $(BP)$ of $100 \,mm$ of $Hg$. The heart is typically at a height of $1.3 \,m$ from the foot. Take the density of blood to be $10^3 \,kg/m^3$ and note that $100 \,mm$ of $Hg$ is equivalent to $13.3 \,kPa$ (kilo pascals). The ratio of $BP$ in the foot region to that in the head region is close to:

$A$ barometer tube reads $75 \,cm$ of $Hg$. If the tube is gradually inclined at an angle of $30^{\circ}$ with the horizontal,keeping the open end in the mercury container,then find the length of the mercury column in the barometer tube in $cm$.

The diagram shows a simple mercury barometer. Which of the following does not cause the height of the mercury column to vary?

Why are two holes made to empty an oil tin?

The density of the atmosphere is $1.29 \ kg/m^3$. If the atmospheric pressure is $1.013 \times 10^5 \ Pa$,how high would the atmosphere extend if the density were uniform? $(g = 9.81 \ m/s^2)$