Dilatation Flashcards

1
Q

La loi de la dilatation :

A
lt = l0 X (1+Ax(t-t0))
lt = longueur tige à la T°
l0 = longueur tige initiale
to = T° initiale de la tige
A est le coefficient de dilatation
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2
Q

Calcul du coefficient de dilatation :

A est en K-1

A
A = lt - l0
      -------------
      lo x (t-t0)
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3
Q

le volume à t0 est donné par :

A

Vo = l2 x l1 x l0 (long x larg x haut)

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4
Q

Formule de Vt :

A

Vt = V0 x (1 + 3 x A x (t - t0))au cube

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5
Q

Le coefficient de dilatation volumique est “K”, sa formule est :
Il faut aussi 3xA

A
K = Vt-V0
      --------------
      V0 x(t-t0)
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6
Q

Loi de Gay-Lussac :

A

A pression constante, le rapport de V/T est constant.

V/T = V0/T0

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7
Q

La relation de Charles

A

A volume constant le rapport P/T est contant

P/T = P0/T0

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8
Q

Loi de Mariotte

A

A température constante, le rapport PxV est contant

PxV = P0xV0

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9
Q

Équation des gaz parfaits :

A

PxV P0xV0
—— = ———-
T T0

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