Two-out-of-tune flutes play the same note. one produces a tone that has a frequency of 250 hz, while the other produces 266 hz. when a tuning fork is sounded together with the 250-hz tone, a beat frequency of 9 hz is produced. when the same tuning fork is sounded together with the 266-hz tone, a beat frequency of 7 hz is produced. what is the frequency of the tuning fork?

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.