Two Loudspeakers Are Located 3

question 49

Multiple Choice

Two loudspeakers are located 3.0 m apart on the stage of an auditorium. A listener at point P is seated 19.0 m from one speaker and 15.0 m from the other. A signal generator drives the speakers in phase with the same amplitude and frequency. The wave amplitude at P due to each speaker alone is A. The frequency is then varied between 30 Hz and 400 Hz. The speed of sound is 343 m/s.
-Determine the value of the maximum amplitude in terms of A.

• A)2.0A
• B)2.5A
• C)3.0A
• D)4.0A
• E)5.0A

---

Definitions:

Neurochemical Basis

Refers to the foundation or underlying cause of behaviors and mental processes as determined by the activity of neurotransmitters and neurochemicals in the brain.

Norepinephrine

A neurotransmitter and hormone involved in the body's fight or flight response, affecting attention, heart rate, and blood pressure.

GABA

A neurotransmitter in the central nervous system that inhibits nerve transmission, leading to calming effects.

Serotonin

A neurotransmitter that contributes to feelings of well-being and happiness, also involved in regulating sleep, appetite, and mood.