1. The centre of gravity of the volume of the liquid displaced is called
2. A square surface 3 m × 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is
3. In a reciprocating pump, air vessels are used to
4. The absolute pressure is equal to
5. The pressure less than atmospheric pressure is known as
6. One stoke is equal to
7. The Newton's law of resistance is based on the assumption that the
8. When the Mach number is between __________ the flow is called super-sonic flow.
9. The center of pressure of a surface subjected to fluid pressure is the point
10. Surface tension
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