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CCB Physique 2013 Maraichers


CapitaineKrebs

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Bonsoir, 

 

https://www.cjoint.com/c/HJjueiEJPX7

 

(Les réponses justes sont CE)

 

Je bloque sur un QCM de Physique sur les dimensions, car le (rho-rho) me bloque... 

A moins que je ne me trompe sur les autres dimensions:

v1 = LT^-1

r=L donc r^2= L^2

rho= ML^-3

rho'= ML^-3

g = LT^-2

 

 

Ainsi pour trouver la viscosité, je fais (L^2 (ML^-3 - ML^-3) LT^-2) / (LT^-1) et je bloque à cause du signe -... 

Quelqu'un pourrait-il m'aider à comprendre comment faire? 

Merci d'avance!

 

Edited by alexclc99
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