A Sound Wave Radiates from a Source Uniformly in All

question 79

Multiple Choice

A sound wave radiates from a source uniformly in all directions. If the power of the sound source is 200 watts, then the intensity level of the sound wave 100 m from the source is

• A) 98.5 dB.
• B) 92.0 dB.
• C) 91.5 dB.
• D) 89.6 dB.
• E) 88.3 dB.

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Definitions:

Aerobic

Aerobic refers to processes or activities that require the presence of oxygen, such as aerobic exercise which improves cardiovascular conditioning.

Anaerobic

Relating to or involving processes that occur without the presence of oxygen, especially in the context of exercise or bacterial growth.

Seaweed

Marine algae found in oceans around the world, used for food, as fertilizer, and in some cultures, for medicinal purposes.

Gelatin-like Substance

A viscous, semi-solid material, similar in texture to gelatin, used in various applications.