Question 148: Properties of Matter

Question

A fluid is flowing through a horizontal pipe of varying cross-section, with
speed v ms
–1
at a point
where the pressure is P pascal. At another point where pressure is ${P \over 2}$
 Pascal its speed is V ms
–1
. If
the density of the fluid is $\rho $ kg m
–3
and the flow is streamline, then V is equal to :

Accepted Answer

From Bernoulli's equation,
P + ${1 \over 2}\rho {v^2}$ = ${P \over 2} + {1 \over 2}\rho {V^2}$
$ \Rightarrow $ V = $\sqrt {{P \over \rho } + {v^2}} $

Answer

$\sqrt {{P \over {2\rho }} + {v^2}} $

Answer

$\sqrt {{P \over \rho } + {v^2}} $

Answer

$\sqrt {{{2P} \over \rho } + {v^2}} $

Answer

$\sqrt {{P \over \rho } + {v}} $

Properties of Matter

Choose the correct answer: