The Speed of Sound in Air Is 340 M/s, and the Density

question 1

Multiple Choice

The speed of sound in air is 340 m/s, and the density of air is 1.2 kg/m³.If the displacement amplitude of a 440-Hz sound wave is 10 µm, what is the intensity of the wave?

• A)0.16 W/m²
• B)0.32 W/m²
• C)12 W/m²
• D)16 W/m²
• E)32 W/m²

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Definitions:

Closed Posture

A position that conveys the feeling of not being totally receptive to what is being said; arms are often rigid or folded across the chest.

Boredom

A state of feeling uninterested, weary, or impatient due to a lack of stimulation, excitement, or engagement.

Leaning Back

A posture where one inclines the torso backwards from a vertical or standing position, often for relaxation or balancing purposes.

Active Listening

The practice of fully concentrating, understanding, responding, and remembering what is being said in a conversation.