Hydraulics and Fluid Mechanics in ME
Newton's law of viscosity is a relationship between

Rate of shear strain and temperature
Shear stress and rate of shear strain
Shear stress and velocity
Pressure, velocity and temperature

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Hydraulics and Fluid Mechanics in ME
The discharge through a channel of trapezoidal section is maximum when

The sloping side is equal to the width at the bottom
The sloping side is equal to half the width at the top
Width of channel at the top is equal to twice the width at the bottom
Depth of channel is equal to the width at the bottom

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