Spherical Particles of Density 3

question 32

Multiple Choice

Spherical particles of density 3.0 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 30 minutes.What is the radius of the largest particles still in suspension at that time?

• A) 4.5 × 10−⁶ m
• B) 9.0 × 10−⁶ m
• C) 2.6 × 10−⁶ m
• D) 5.6 × 10−⁶ m

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Definitions:

Semicircular Canals

Three fluid-filled tubes located in the inner ear that are key components in maintaining balance and detecting head movements.

Cochlea

A spiral-shaped cavity in the inner ear that plays a key role in converting sound vibrations into neural signals.

Nociceptors

Specialized sensory receptors responsible for detecting harmful stimuli and sending pain signals to the brain.

ESP

Extrasensory Perception, a claimed ability to gain information without the use of the known five senses.