Atmospheric Pressure and Gauge Pressure

The pressure at the bottom of a tank of water is $3\mathrm{P}$ where $\mathrm{P}$ is the atmospheric pressure. If the water is drawn out till the level of water is lowered by one-fifth, the pressure at the bottom of the tank will now be

The height of the mercury column in a simple barometer is h. As the tube is inclined with the vertical at an angle $\alpha$, the length of the mercury column along the length of the tube will become 

A manometer tube contains a liquid of density $3\times {10}^3 \mathrm{kg} {\mathrm{m}}^{-3}$. When connected to a vessel containing a gas, the liquid level in the other arm of the tube is higher by $10 \mathrm{cm}$. When connected to another sample of enclosed gas, the liquid level in the other arm of the manometer tube falls $7 \mathrm{cm}$ below the liquid level in the first arm. Which of the two samples exerts more pressure and by what amount?

The height of mercury column in a simple barometer is $h$. As the tube is inclined with the vertical at an angle $\alpha$, then length of mercury column along the length of the tube will become

Calculate the barometer reading at a place where atmospheric pressure is $0.98 \mathrm{bar}$. Given that the density of mercury is $13.6\times {10}^3 \mathrm{kg} {\mathrm{m}}^{-3}$.

What is mercury barometer and its uses?

Hydrostatic Paradox states that the pressure at a given height (depth) of the liquid is depending on the shape of the volume of the liquid.

Hydrostatic paradox deals with the _____ of a liquid at all points of the same horizontal level.

What is meant by hydrostatic paradox?

Deduce an expression for the atmospheric pressure at height $\mathrm{h}$ of the atmosphere.

Calculate the height of the earth's atmosphere.

(The standard atmospheric pressure is $1.013\times {10}^5{\mathrm{Nm}}^{-2} ( \mathrm{Pa})$. The atmosphere has a uniform density $\mathrm{\rho }=1.29 {\mathrm{kgm}}^{-3}$)

What are different units of atmospheric pressure?

We use straw to suck soft drinks, why ?

Why the passengers are advised to remove the ink from their pens while going up in an aeroplane?

What is a hydrostatic paradox and how it can be resolved? Explain with the help of an example.

Consider three vessels of same base area $\left(A\right)$ filled with a liquid to the same height $\left(h\right)$as shown in the figure. Which of the following statement is not true?

During blood transfusion the needle is inserted in a vein where the gauge pressure is $2000 \mathrm{Pa}$. At what height (answer to two decimal places) must the blood container be placed so that blood may just enter the vein?

(Answer approximately to two decimal places)

(Use the density of whole blood from table).

Densities of some common fluids at STP

Who was the head of the Roman Catholic Church during the medieval period?

What is the main factor that influences the rate of weathering?

Which latitude line is located at 23.5° South?