Water is discharged from a pipe of cross-section area $3.2 c m^{2}$ at the speed of $5 m / s$ . Calculate the volume of water discharged in litres per minute.

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Solution

Water is discharged from a pipe of cross-section area $3.2 c m^{2}$ at the speed of $5 m / s$ .
Volume of water discharged per sec $=$ Area of cross section $\times$ Speed
$= 3.2 c m^{2} \times 5 m / s$
$= 3.2 c m^{2} \times 5 \times 100 c m / s$
$= 1600 c m^{3} / s e c$
$= 1600 \times 10^{- 3} l i t r e s / s e c$
$= 1.6 \times 60 l i t r e s / m i n$
$= 96 l i t r e s / m i n$

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