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It depends very much on the medium which the sound has to travel through. Sound will not travel through a vacuum at all. Sound will travel faster through materials that are more dense, so that the speed of sound through solids and liquids is faster than the speed of sound through gases. In Earth's atmosphere, the speed of sound is faster at sea level than the speed of sound at high altitude. Generally, the speed of sound through air at sea level and normal temperatures is about 340 metres per second, while the speed of sound through a steel bar is about 5000 metres per second. However, the speed of sound through solids can be two different discrete values, depending on the mode of vibration propagation - compression waves or slower shear waves.

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13y ago

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