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Q:

What is speed of sound?

A:

The speed of sound can change depending on the temperature of the air. At 15 ºC (59 ºF) sound travels at about 1,220 kilometers per hour (760 miles per hour). While at -56 ºC (-67 ºF)  the speed of sound is much slower at about 1,056 km/h (660 mph).

Categories: Aerodynamics