Spherical Particles of Density 1

question 20

Multiple Choice

Spherical particles of density 1.6 g/cm³ are shaken in a container of water (viscosity = 1.0 × 10−³ N⋅s/m³) .The water is 10.0 cm deep and is allowed to stand for 35 minutes.What is the radius of the largest particles still in suspension at that time?
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• A) 6 × 10−⁶ m
• B) 7.3 × 10−⁶ m
• C) 2.8 × 10−⁶ m
• D) 2 × 10−⁶ m
• E) ​4.7 × 10−⁶ m

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