Hydraulics and Fluid Mechanics in ME
The absolute pressure is equal to

Gauge pressure - vacuum pressure
Gauge pressure - atmospheric pressure
Atmospheric pressure - gauge pressure
Gauge pressure + atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
The meatcentric height is the distance between the

Centre of gravity of the floating body and the centre of buoyancy
Centre of gravity of the floating body and the metacentre
Metacentre and centre of buoyancy
Original centre of buoyancy and new centre of buoyancy

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