Student X hears the alarm first because sound travels faster in solids than in gases.
<h3>Speed of sound</h3>
Sound is a wave, as such, sound waves are able to travel across long distances. The speed of sound is greatest in solids since the gases have a high density owing to the fact that the molecules are closely packed.
Now, we can infer from this that student X hears the alarm first because sound travels faster in solids than in gases.
Learn more about speed of sound: brainly.com/question/15381147
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