Spherical Particles of Density 2

question 32

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 8.0 cm deep and is allowed to stand for 15 minutes. What is the greatest terminal velocity of the particles still in suspension at that time?

• A) 0.55 *10^-5 m/s
• B) 1.1 *10^-5 m/s
• C) 4.4 *10^-5 m/s
• D) 8.8 *10^-5 m/s

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