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Sagot :

LEAFE

Bonjour,

Question 1 :

t = 1 an = 3600 x 24 x 365 = 31 536 000 s

v = 300 000 km/s

[tex]d = v \times t =300 \ 000 \times 31 \ 536 \ 000 = 9,46 \times 10^{12} \ km[/tex]

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