Pressure on a swimmer 20 ,m below surface of water is ..... atm

English

Gujarati

Hindi

9-1.Fluid Mechanics

normal

What is the pressure on a swimmer $20 \,m$ below the surface of water is ..... $atm$

A

$1$

B

$2$

C

$3$

D

$4$

Solution

(c)

Let atmospheric pressure $= P _3=1.05 \times 10^5\,Pa$

Pressure $20\, m$ below surface of lake

$P = P _0+\rho gh$

$=1.05 \times 10^5+1000 \times 9.8 \times 20$

$=3.01 \times 10^5 Pa \left(\rho \rightarrow \text { water density }=1000 kg / m ^3\right)$

$=3\,atm$

Standard 11

Physics

Share

Similar Questions

For a constant hydraulic stress on an object, the fractional change in the object’s volume $(\Delta V/V)$ and its bulk modulus $(B)$ are related as

normal

The height of water in a tank is $H$. The range of the liquid emerging out from a hole in the wall of the tank at a depth $\frac {3H}{4}$ form the upper surface of water, will be

normal

The excess pressure inside the first soap bubble is three times that inside the second bubble then, the ratio of volume of the first to the second bubble will be

normal

A ………. $m/s$ speed the velocity head of water is equal to pressure head of $40\, cm$ of $Hg$ .

normal

A space $2.5\ cm$ wide between two large plane surfaces is filled with oil. Force required to drag a very thin plate of area $0.5\ m^2$ just midway the surfaces at a speed of $0.5\ m/sec$ is $1\ N$. The coefficient of viscosity in $kg-s/m^2$ is

normal