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8 May, 08:10

Longitudinal sound waves cannot propagate through

solids

steam

wet sand

liquids

gases

a vacuum

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Answers (1)
  1. 8 May, 11:49
    0
    A vacuum

    Explanation:

    Sound waves are examples of mechanical waves. Mechanical waves are waves which are transmitted through the vibrations of the particles in a medium.

    For example, sound waves in air consist of oscillations of the air particles, which vibrate back and forth (longitudinal wave) along the direction of propagation of the wave itself.

    Given this definition of mechanical wave, we see that such a wave cannot propagate if there is no medium, because there are no particles that would oscillate. Therefore, among the choices given, the following one:

    a vacuum

    represent the only situation in which a sound wave cannot propagate through: in fact, there are no particles in a vacuum, so the oscillations cannot occur. In all other cases, instead, sound waves can propagate.
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