At what speed the velocity head of a stream of water be equal to $40 cm $ of $Hg$  ........ $cm/sec$ 

Write the limitations of Bernoulli’s equation..

Explain why bullets of gun are cylinder in shape ?

The diagram (figure) shows a venturimeter, through which water is flowing. The speed of water at $X$ is $2\,cm/s.$ The speed of water at $Y$ (taking $g = 1000 \,cm/s^2$ ) is ........ $cm/s$

Water is flowing continuously from a tap having an internal diameter $8 \times 10^{-3}\ m $ The water velocity as it leaves the tap is $0.4$ $ms^{-1}$ છે. The diameter of the water stream at a distance $2  \times 10^{-1}$ $m$ below the tap is close to .......$\times 10^{-3}\;m$

Bernoulli's principle does not explain