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

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

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Hydraulics and Fluid Mechanics in ME
Coefficient of contraction is the ratio of

Actual velocity of jet at vena contracta to the theoretical velocity
Loss of head in the orifice to the head of water available at the exit of the orifice
Loss of head in the orifice to the head of water available at the exit of the orifice
Area of jet at vena-contracta to the area of orifice

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