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Salut @-idk- ! 

On sait que : φ=ω1Δt

Or, ω1 = γ B1

Donc on a φ=γ BΔt

<=> Δt = φ / (γ B1)

<=> Δt =π / [ (26,75 x 10 x 3,14 ) / 26,75 x 103]

On simplifie : Δt =π / [ (26,75 x 10 x 3,14 ) / 26,75 x 103]

Il nous reste donc : Δt = 103/10= 10-4s = 100µs

J'espère que c'est plus clair. 

Bonne journée !

Edited by SBY
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Le 15/11/2020 à 13:02, SBY a dit :

Salut @-idk- ! 

On sait que : φ=ω1Δt

Or, ω1 = γ B1

Donc on a φ=γ BΔt

<=> Δt = φ / (γ B1)

<=> Δt =π / [ (26,75 x 10 x 3,14 ) / 26,75 x 103]

On simplifie : Δt =π / [ (26,75 x 10 x 3,14 ) / 26,75 x 103]

Il nous reste donc : Δt = 103/10= 10-4s = 100µs

J'espère que c'est plus clair. 

Bonne journée !

Merci beaucoup !

 

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