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1,560 meters per second is about four-and-a-half times as fast as The Speed of Sound
In other words, it's 4.55 times the speed of The Speed of Sound, and the speed of The Speed of Sound is 0.22 times that amount.
(in dry air at 20°C)
The speed of sound in dry air at 20°C (68°F) is 343 meters per second. Air is a relatively poor acoustic conductor, however, as sound will travel at speeds of between 1,497 m/s to 1,560 m/s in water, depending on its salinity.
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