A pianist pays the A key on the piano, which should output a frequency of 440 Hz. An electric tuner actually outputs an A at 440 Hz, and the pianist hears a beat at 3 Hz. When the string on the piano is tightened, the beat increases to 4 Hz. What frequency was the A key on the piano originally playing?
Interference of sound
Seiche
A seiche is an oscillating standing wave in a body of water. The term seiche pronounced saysh) can be understood by the sloshing of water back and forth in a swimming pool. The same phenomenon happens on a much larger scale in vast bodies of water including bays and lakes. A seizure can happen in any enclosed or semi-enclosed body of water.
A pianist pays the A key on the piano, which should output a frequency of 440 Hz. An electric tuner actually outputs an A at 440 Hz, and the pianist hears a beat at 3 Hz. When the string on the piano is tightened, the beat increases to 4 Hz. What frequency was the A key on the piano originally playing?
output frequency (f) = 440 Hz
output at A key produces a beat frequency of 3 Hz
Step by step
Solved in 2 steps
