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Statement of a problem № 10661

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Two musicians are comparing their trombones. The first produces a tone that is known to be 438 Hz. When the two trombones play together they produce 6 beats every 2 seconds. Which statement is true about the second trombone? (a) It is producing either a 432-Hz sound or a 444-Hz sound. (b) It is producing either a 436-Hz sound or a 440-Hz sound. (c) It is producing a 444-Hz sound, and could be producing no other sound frequency. (d) It is producing either a 435-Hz sound or a 441-Hz sound. (e) It is producing a 441-Hz sound and could be producing no other sound frequency.




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