les ultrasons se propagent dans n'importe quel milieu. vrai ou faux?

By: USER8662
27 Agustus 2025 physique-chimie 5 minutes
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Question

Grade: Education Subject: physique-chimie
les ultrasons se propagent dans n'importe quel milieu. vrai ou faux?
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68 Viewed 68 Answers

Answer (68)

Best Answer
(44)
faux ils ne se propagent pas dans le vide ;)
Answered on 27 Agustus 2025
(127)
Faux. Les ultrasons se réfléchissent sur les obstacles, ce qui permet aux dauphins et aux chauves souries de se repérer.
Answered on 27 Agustus 2025

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