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25laetitia46
@25laetitia46
January 2021
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besoin d’aide svp physique 4è signaux sonores merci pour tout aide
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MonsieurFirdown
Verified answer
Bonjour
Exos 3 :
♧ On a 400 ms = 0,400 s , d'où :
d = v×t
d = 1500×0,400 = 600 m
♧ Ce qui veut dire que les ultrasons parcourent 600m pour faire un aller-retour d'où 600/2 = 300m
Voilà ^^
1 votes
Thanks 1
25laetitia46
Merci beaucoup
MonsieurFirdown
;)
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Lista de comentários
Verified answer
BonjourExos 3 :
♧ On a 400 ms = 0,400 s , d'où :
d = v×t
d = 1500×0,400 = 600 m
♧ Ce qui veut dire que les ultrasons parcourent 600m pour faire un aller-retour d'où 600/2 = 300m
Voilà ^^