Question: Sand particles (SG = 2.7), approximately spherical with diameters from 100 to 250 m, are introduced into an upward-flowing water stream. What is the minimum

Sand particles (SG = 2.7), approximately spherical with diameters from 100 to 250 μm, are introduced into an upward-flowing water stream. What is the minimum water velocity to carry all the particles upward?

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