Molly Music is sitting in the audience at a concert. When the concert begins, the band, Truth
Hertz, warms up by singing notes and the sound plays over two speakers. Molly is sitting at
the position shown and the speakers are separated by 15.0 m.
i. Find the path difference of the sound where Molly is sitting. [3 points]
ii. What are the lowest three frequencies for which Molly hears loud sound? [4 points]