Two speakers, A and B, emit sound waves of the same frequency and are in phase (start the same way). They both are vibrating with a frequency of 860 Hz. You are located 12.0 m from speaker A and 13.4 m from speaker B. Do you hear a very loud sound, a very soft sound, or something in between? (The speed of sound is v = 344 m/s).

Two speakers, A and B, emit sound waves of the same frequency and are in phase (start the same way). They both are vibrating with a frequency of 860 Hz. You are located 12.0 m from speaker A and 13.4 m from speaker B. Do you hear a very loud sound, a very soft sound, or something in between? (The speed of sound is v = 344 m/s).