Awoman stands at rest in front of a large, smooth wall. she holds a vibrating tuning fork of frequency initial: fo directly in front of her (between her and the wall).

(a) the woman now runs toward the wall with speed pw, she detects beats due to the interference between the sound waves reaching her directly from the fork

note: if the beat frequency is too large, the woman may have to use some instrumentation other than her e reaching her after being reflected from the wall. how many beats per second will she detect?

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.