A student shouts facing a tall building 176 meters away and hears the echo after 1 second. What is the speed of sound in air based on this observation?
352 m/s
Between the shout and the echo, the sound wave travels from the student to the building and back, covering twice the wall distance.
Total distance travelled \(= 2 \times 176 = 352\) m in a time interval of \(1\) s.
Speed of sound \(= \dfrac{\text{total distance}}{\text{time}} = \dfrac{352}{1} = 352\) m/s.
Hence, the observed speed of sound in air is 352 m/s.
Similar Questions
Which of the following statements is/are true about the loudness and softness of a sound wave?
(i) A loud sound has less amplitude as compared to a soft sound.
(ii) A loud sound has more energy associated with it as compared to a soft sound.
(iii) The loudness of a sound wave is the measure of the response of the ear to the sound.
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When a tuning fork vibrates and produces sound, what type of waves is created in the air?
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If a musical instrument produces a sound with a frequency of 200 Hz, which of the following frequencies will produce a sound of higher pitch than this instrument?
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