Randall D. Knight — Superposition: Problem Problem_73

A flutist assembles her flute in a room where the speed of sound is \(342\text{ m/s}\). When she plays the note A, it is in perfect tune with a \(440\text{ Hz}\) tuning fork. After a few minutes, the air inside her flute has warmed to where the speed of sound is \(346\text{ m/s}\). a. How many beats per second will she hear if she now plays the note A as the tuning fork is sounded? b. How far does she need to extend the “tuning joint” of her flute to be in tune with the tuning fork?