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What is shear velocity primarily used to measure in fluid mechanics?
- A Pressure differences
- B Flow rate
- C The velocity gradient at a boundary
- D Fluid temperature
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In fluid mechanics, shear velocity is primarily used to measure the velocity gradient at a boundary, such as the boundary layer between a fluid (like water or air) and a solid surface. This concept is crucial for understanding how fluids flow near surfaces and is used to calculate shear stress in the fluid, which affects how substances like pollutants or nutrients are transported and mixed near the surface.
