The speed of sound in air at 20 degree is 344 m/s . the wavelength
of a sound wave with a frequency of 784Hz , corresponding
to the note G5 on a piano is 0.43878m.
1. How many milliseconds does each vibration take?
unit=ms
2. What is the wavelength of a sound wave one octave higher than the
note in part A?
unit = m
speed of sound
2012-11-22 6:25 am
回答 (1)
2012-11-22 7:23 am
✔ 最佳答案
1. Period = 1/frequency = 1/784 s = 1.276 x 10^-3 s = 1.276 ms2. New frequency = 784 x 2 Hz = 1568 Hz
Hence, wavelength of sound = 344/1568 m = 0.219 m
收錄日期: 2021-04-29 17:49:08
原文連結 [永久失效]:
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