Hydraulics and Fluid Mechanics in ME
The angle of contact in case of a liquid depends upon

the nature of the liquid and the solid
the material which exists above the free surface of the liquid
both of die above
any one of the above

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Hydraulics and Fluid Mechanics in ME
When an ideal fluid flows past a sphere

highest intensity of pressure occurs around the circumference at right angles to flow
total drag is zero
lowest pressure intensity occurs at rear stagnation point
lowest pressure intensity occurs at front stagnation point

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