Respuesta :
					                   particles of the medium move perpendicular to the direction of energy transport. ... Mechanical waves require a medium in order to transport energy. Sound, like any mechanical wave, cannot travel through a vacuum. the particles
EXPLANATION:
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					             EXPLANATION:
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Answer:
sound waves need to travel through a medium such as solids,liquids and gases. hoped this helped
Explanation:
sound waves
 
			                  