Two Small Forward-Facing Speakers Are 2

question 25

Multiple Choice

Two small forward-facing speakers are 2.50 m apart.They are both emitting,in phase with each other,a sound of frequency 1100 Hz in a room where the speed of sound is 344 m/s.A woman is standing opposite the midpoint between the speakers and is initially 35.0 m from the midpoint.As she slowly walks parallel to the line connecting the speakers,at what angle θ (relative to the centerline coming outward from the midpoint between the speakers) will she first hear no sound?

• A) 0.063°
• B) 3.6°
• C) 7.2°
• D) 1.8°
• E) 11°

---

Definitions:

Interpersonal Therapy

A form of therapy focused on improving interpersonal relationships and communication patterns to alleviate mental health issues.

Development

The process of growth and change that happens in human beings across their lifespan, including physical, cognitive, and social aspects.

Cognitive Structures

Internal mental frameworks, concepts, or patterns of thinking that individuals use to organize and interpret information.

Decision Making

The cognitive process of selecting a course of action among several alternatives to achieve a desired outcome.