Two violinists, one directly behind the other, play for a listener directly in front of them. Both violinists sound concert A (440 Hz).
What is the smallest separation between the violinists that will produce destructive interference for the listener? Assume that the speed of sound is 343 m/s.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.