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bubu03
@bubu03
June 2021
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bonsoir aidez moi svp ❤️ j'arrive pas ❤️
• La vitesse d'une sonde spatiale est d'environ 20 800 m/s
• donner l'écriture scientifique de cette vitesse exprimée en kilomètre par heures .
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aidezmoimerci
1h= 3600 s
1km= 1000 m
20 800m = 20,8 km
1h = 3600 s soit 20,8 x 3600 = 74880 km/h
L'écriture scientifique est donc: 7.4880x 10(puissance 4)
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Lista de comentários
1km= 1000 m
20 800m = 20,8 km
1h = 3600 s soit 20,8 x 3600 = 74880 km/h
L'écriture scientifique est donc: 7.4880x 10(puissance 4)