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Physics

Fluid-Mechanics

Easy

Question

Water from a tap at the end of horizontal pipe emerges vertically downwards with an initial speed of $1 m s to the power of negative 1 end exponent$ . The cross section of the pipe is $10 to the power of negative 4 end exponent cm squared$ at the top. If the pressure of the stream is constant throughout, the area of the stream 0 -15 m below the tap is

$5 \times 10^{- 4} m^{2}$
$10^{- 5} m^{2}$
$5 \times 10^{- 5} m^{2}$
$2 \times 10^{- 5} m^{2}$

The correct answer is: $5 cross times 10 to the power of negative 5 end exponent straight m squared$

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