Spherical Particles of Density 2

question 9

Multiple Choice

Spherical particles of density 2.0 g/cm³ are shaken in a container of water (viscosity = 1.0 × 10−³ N⋅s/m³) .The water is 7.0 cm deep and is allowed to stand for 30 minutes.What is the greatest terminal velocity of the particles still in suspension at that time?
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• A) 2 × 10−⁵ m/s
• B) 2.9 × 10−⁵ m/s
• C) 4.9 × 10−⁵ m/s
• D) 3.9 × 10−⁵ m/s
• E) ​5.5 × 10−⁵ m/s

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