"The velocity of upper layer of water in a river is 36 kmh$-$1. Shearing stress between horizontal layers of water is 10$-$3 Nm$-$2. Depth of the river is __________ m. (Co-efficient of viscosity of water is 10$-$2 Pa.s)"

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Accepted Answer

"

$F = - \eta A{{du} \over {dx}}$

$\Rightarrow {10^{ - 3}} = {10^{ - 2}} \times {{10} \over h}$

$\Rightarrow h = {{{{10}^{ - 1}}} \over {{{10}^{ - 3}}}}$ m = 100 m

$\Rightarrow$ (100)

"

The velocity of upper layer of water in a river is 36 kmh^$-$1. Shearing stress between horizontal layers of water is 10^$-$3 Nm^$-$2. Depth of the river is __________ m. (Co-efficient of viscosity of water is 10^$-$2 Pa.s)

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The velocity of upper layer of water in a river is 36 kmh$-$1. Shearing stress between horizontal layers of water is 10$-$3 Nm$-$2. Depth of the river is __________ m. (Co-efficient of viscosity of water is 10$-$2 Pa.s)

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The velocity of upper layer of water in a river is 36 kmh^$-$1. Shearing stress between horizontal layers of water is 10^$-$3 Nm^$-$2. Depth of the river is __________ m. (Co-efficient of viscosity of water is 10^$-$2 Pa.s)