The speed of sound in air at sea level is approximately____________?
Correct answer: C. 340 meters per second
- A. 300 meter per second
- B. 320 meter per second
- C. 340 meters per second
- D. 370 meter per second
Explanation
At sea level and around 20°C, sound travels through air at approximately 343 metres per second, conventionally rounded to 340 metres per second. Its speed changes with temperature and the medium.
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