An observer stands 3 m from speaker A and 4 m from speaker B. Both speakers, oscillating in phase, produce 170 Hz waves. The speed of sound in air is 340 m/s. What is the phase difference (in radians) between the waves from A and B at the observer's location, point P?
A)0
B)$\frac{\pi}{2}$
C)( $\pi$)
D)2 $\pi$
E)4 $\pi$

Question

An observer stands 3 m from speaker A and 4 m from speaker B. Both speakers, oscillating in phase, produce 170 Hz waves. The speed of sound in air is 340 m/s. What is the phase difference (in radians) between the waves from A and B at the observer's location, point P? 
A)0 
B)$\frac{\pi}{2}$ 
C)( $\pi$) 
D)2 $\pi$ 
E)4 $\pi$

Quizplus · Accepted Answer

The Answer of An observer stands 3 m from speaker A and 4 m from speaker B. Both speakers, oscillating in phase, produce 170 Hz waves. The speed of sound in air is 340 m/s. What is the phase difference (in radians) between the waves from A and B at the observer's location, point P? 
A)0 
B)$\frac{\pi}{2}$ 
C)( $\pi$) 
D)2 $\pi$ 
E)4 $\pi$

An Observer Stands 3 M from Speaker a and 4 π2\frac{\pi}{2}2π​

An Observer Stands 3 M from Speaker a and 4 $\frac{\pi}{2}$