Hydraulics and Fluid Mechanics in ME
Centre of buoyancy always

coincides with the centre of gravity
remains below the centre of gravity
remains above the centre of gravity
coincides with the centroid of the volume of fluid displaced

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Hydraulics and Fluid Mechanics in ME
Mach number is significant in

simultaneous motion through two fluids where there is a surface of dis-continuity, gravity force, and wave making effects, as with ship’s hulls
all of fhe above
full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc
supersonics, as with projectiles and jet propulsion

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