Two loudspeakers,A and B,are separated by a distance of 2.0 m.The speakers emit sound waves at a frequency of 680 Hz that are exactly out of phase.The speed of sound is 343 m/s.How far from speaker A along the +x axis will a point of constructive interference occur?
A)0.25 m
B)0.30 m
C)0.46 m
D)0.88 m
E)0.98 m

Question

Two loudspeakers,A and B,are separated by a distance of 2.0 m.The speakers emit sound waves at a frequency of 680 Hz that are exactly out of phase.The speed of sound is 343 m/s.How far from speaker A along the +x axis will a point of constructive interference occur? 
A)0.25 m 
B)0.30 m 
C)0.46 m 
D)0.88 m 
E)0.98 m

Quizplus · Accepted Answer

The Answer is D

Two Loudspeakers,A and B,are Separated by a Distance of 2