- #1
Turion
- 145
- 2
Homework Statement
An observer stands 3 m from speaker A and 5 m from speaker B. Both speakers, oscillating in phase, produce waves with a frequency of 250 Hz. The speed of sound in air is 340 m/s. What is the phase difference between the waves from A and B at the observer's location?
Homework Equations
The Attempt at a Solution
$$Δr=|{ r }_{ 2 }-{ r }_{ 1 }|\\ =2$$
I have no idea what to do. What the textbook says is attached. This was a test question. :(