Assume You Have Perfectly Spherical Quartz Grains in a Stream

question 59

Multiple Choice

Assume you have perfectly spherical quartz grains in a stream with a velocity of 100 cm/sec.What is the minimum size of grain that would not move?

• A)0.02 mm
• B)2 mm
• C)2 cm
• D)20 cm

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Definitions:

Opiate Drugs

Substances derived from the opium poppy that are used for their pain-relieving properties but may lead to addiction.

Receptor Sites

Specific locations on the surface of a cell or within its interior where chemical compounds, such as hormones or neurotransmitters, can bind to trigger a response in the cell.

Endorphins

Neurochemicals produced in the brain that act as natural painkillers and are associated with feelings of pleasure and euphoria.

Relieve Pain

The process or action of reducing, alleviating, or eliminating physical discomfort or suffering.