As Shown Below, a Garden Room Has Three Walls, a Floor

question 39

Multiple Choice

As shown below, a garden room has three walls, a floor, and a roof, but is open to the garden on one side. The wall widths are L and w. The roof height is h. When traveling sound waves enter the room, standing sound waves can be present in the room if the wavelength of the standing waves is ​ ​

• A) , where n is a positive integer.
• B) , where n is an odd integer.
• C) , where n is an even integer.
• D)in all cases listed above.
• E)given by (a) or (b) above, but not by (c).

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Definitions:

Psychological

Pertaining to the mind or mental processes and how they affect behavior, feelings, and thinking.

Electromyogram

An electromyogram (EMG) is a diagnostic procedure to assess the health of muscles and the nerve cells that control them (motor neurons) by recording the electrical activity produced by skeletal muscles.

Electroencephalogram

A test that measures the electrical activity of the brain using small, flat metal discs attached to the scalp.

Physiological

Pertaining to the functions and processes within living organisms and their parts.