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2 October, 15:45

A sound wave traveling at STP has a period of. 0023 seconds. The wavelength of this sound is closest to

1) 1.4E5

2) 6.9E-6

3) 0.76m

4) 76m

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Answers (1)
  1. 2 October, 16:00
    0
    Answer: 3

    Wavelength = 0.76m

    Explanation:

    When sound wave is travelling at standard temperature and pressure (STP), its speed will be equal to normal speed of sound which is equal to 331 m/s

    Given that the period of the wave is 0.0023 seconds.

    Wave speed = wavelength/period

    Substitute the wave speed and the period to obtain wavelength

    331 = wavelength/0.0023

    Cross multiply

    Wavelength = 331 * 0.0023

    Wavelength = 0.7613 metre

    The wavelength of this sound is closest to 0.76 m
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