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The sound needs a medium to be transported. Without that medium (vacuum) there is no sound. The sound is blocked by air mulecules. The light does not need a medium.

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Is the speed of sound faster or slower than light?

Way slower. For reference, the speed of sound is about 767.3 mph and the speed of light is 671,000,000 mph.


Is the speed of sound equal to an electromagnetic wave?

No, speed of sound in air is much slower than the speed of light in vacuum.


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