Hydraulics and Fluid Mechanics in ME
The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

8μvl/wd²
4μvl/wd²
32μvl/wd²
16μvl/wd²

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Hydraulics and Fluid Mechanics in ME
The conditions for the stable equilibrium of a floating body are

the meta-center should lie above the center of gravity
the center of buoyancy and the center of gravity must lie on the same vertical line
a righting couple should be formed
all the above are correct

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