An Enclosed Chamber with Sound Absorbing Walls Has a 2

question 5

Multiple Choice

An enclosed chamber with sound absorbing walls has a 2.0 m × 1.0 m opening for an outside window. A loudspeaker is located outdoors, 78 m away and facing the window. The intensity level of the sound entering the window space from the loudspeaker is 79 dB. Assume the acoustic output of the loudspeaker is uniform in all directions and that the acoustic energy incident upon the ground is completely absorbed and therefore is not reflected into the window. The threshold of hearing is 1.0 × 10^-12 W/m². The acoustic power entering through the window space is closest to

• A) 160 µW.
• B) 79 µW.
• C) 320 µW.
• D) 790 µW.
• E) 1600 µW.

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Definitions:

Conflict

A situation or issue characterized by disagreement, opposition, or clash between two or more parties.

Risk Averse

Characteristic of individuals or entities that prefer to avoid risks and opt for safer options when making decisions.

Loss Averse

A cognitive bias that describes why for individuals the pain of losing is psychologically about twice as powerful as the pleasure of gaining.

Benefits

The positive effects or advantages derived from a particular action, decision, or situation.