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

question 49

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 nonzero distance from the wall the person can stand and hear constructive interference? The speed of sound in air is 343 m/s.

• A)0.34 m
• B)0.73 m
• C)1.2 m
• D)1.6 m

---

Definitions:

Self-efficacy

A person's confidence in their ability to carry out actions required to achieve particular outcomes.

Social-cognitive Theories

Theoretical frameworks that emphasize the role of cognitive processes in understanding social behavior.

Environmental Influences

Factors within an individual's environment that impact their behavior, development, and personality.

Unconscious Motives

Internal drives and desires that influence behavior without an individual's conscious awareness.