The velocity of water in a river is 18km...

The velocity of water in a river is `18kmh^-1` near the surface. If the river is 5 m deep, find the shearing stress between the horizontal layers of water. The coefficient of viscosity of water `=10^(-2)poise`.

`10^(-1) Nm^(-2)`

`10^(-2) Nm^(-2)`

`10^(-3) Nm^(-2)`

`10^(-4) Nm^(-2)`

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