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Physics

Fluid-Mechanics

Easy

Question

Water is flowing through two horizontal pipe of different radii which are connected together. In the first pipe speed of water is $4 m s to the power of negative 1 end exponent$ and the pressure is $1 times 25 cross times 10 to the power of 4 Nm to the power of negative 2 end exponent$ . pipes Then pressure of water in the second pipe is ( radii of those are in the ratio 1 : 2)

$0.5 \times 10^{4} {Nm}^{- 2}$
$0.75 \times 10^{4} {Nm}^{- 2}$
$1 \times 10^{4} {Nm}^{- 2}$
$2 \times 10^{4} N m^{- 2}$

The correct answer is: $2 cross times 10 to the power of 4 N m to the power of negative 2 end exponent$

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