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Besoin d'aide


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Posted (edited)

Bonjour @Ayanokoji,

 

Tu peux faire avec la formule Q = v x S => v = Q/S

sachant que :

1L = 1 dm3 = 10-3 m3 donc Q = 0,1 L/min = 10-4 m3/min

S = 1 cm2 = 10-4 m2

v = 10-4 / 10-4 = 10(-4+4) = 1 m/min

 

Pour retrouver les équations, il faut bien vérifier avec les unités.

Le débit Q est un volume / temps (l'unité c'est L/s) et le volume c'est une longeur3

En résumé, [Q] = L3/T =  (L x L2 )/T = vitesse x Surface

Edited by manue86

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