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How long will it take sound waves to reach you if the source is 40 kilometers away?
Wiki User
∙ 11y ago
Sound travels at about 330m/s in normal air.
First put 40km into metres which is 40,000m.
We can then rearrange the distance=speed x time equation to time=distance/speed.
After this we can just substitute in the values so that time=40,000/330=121.21212
Therefore it would take 121.21 seconds (about two minutes) for sound to travel 40km.
Wiki User
∙ 11y ago
The speed of sound waves in air is approximately 343 meters per second. To calculate the time it takes for the sound waves to reach you, divide the distance by the speed. In this case, it would take approximately 116.8 seconds or about 1 minute and 57 seconds for the sound waves to reach you.
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