Hydraulics and Fluid Mechanics in ME
In a depressed nappe

The pressure above the nappe is atmospheric
The pressure above the nappe is negative
The pressure below the nappe is negative
The pressure below the nappe is atmospheric

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Hydraulics and Fluid Mechanics in ME
When a body is placed over a liquid, it will float if

Gravitational force is more than the up-thrust of the liquid
Gravitational force is less than the up-thrust of the liquid
Gravitational force is equal to the up-thrust of the liquid
None of these

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