Question 12 — The speed of sound in - Questions at the end of the chapter - Chapter 10 - Sound Waves: Characteristics and Application (Exploration

Last updated at July 3, 2026 by

Question 12
The speed of sound in air is about 331 m s⁻¹ at 0 °C and nearly 344 m s⁻¹ at 22 °C. Roughly how much extra time will the sound of thunder take to travel a distance of 1720 m, if the air temperature changes from 22 °C to 0 °C? Assume that all other conditions remain unchanged.
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  • Time at 22 °C \(=\dfrac{1720}{344}=5\ \text{s}\); time at 0 °C \(=\dfrac{1720}{331}\approx 5.196\ \text{s}\).
  • Extra time \(\approx 5.196-5=\mathbf{0.2\ \text{s}}\) (roughly).
Extra Time for Thunder At 344 m/s: 1720 / 344 = 5 s At 331 m/s: about 5.196 s Extra time is about 0.2 s
Back to: 10.6.3 Speed of Sound
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