Two In-Phase Loudspeakers Are Placed Along a Wall and Are

question 39

Multiple Choice

Two in-phase loudspeakers are placed along a wall and are separated by a distance of 4.00 m. They emit sound with a frequency of 514 Hz. A person is standing away from the wall, in front of one of the loudspeakers. What is the closest distance from the wall the person can stand and hear destructive interference? The speed of sound in air is 343 m/s.

• A) 0.344 m
• B) 0.365 m
• C) 0.729 m
• D) 1.15 m
• E) 1.64 m

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Definitions:

Conversational Tone

A style of writing or speaking that is informal, friendly, and similar to everyday spoken language, often used to make content more relatable.

Podium

A small platform used by speakers or performers to elevate them above their audience, often used in public speaking contexts.

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Nonverbal signals or behaviors used by a speaker to emphasize points, manage the pace, or engage the audience during a presentation.

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