Hydraulics and Fluid Mechanics in ME
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid

Falls on the front end
Remains horizontal
Falls on the back end
Becomes curved

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

a righting couple should be formed
all the above are correct
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

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