8/7/2019 SM Examen Concours 2010 2011mod

1/2

: : :

3h : 2011 :12

:

r1=10 cm M

, r2=20 cm

.

J=8. 10 -3

Kg.m2.

S1M1=500g.

S2M2= 100 g

=30

. S2

.f

III . I C1

.S2 C2 II S1

. t=0

g=10 N.Kg:. S1-1.

.v1=2m.st=3s S1 1-

.d1=3m

d2 . S1 d1 .1

.d2.d1 S2

.S2 t=3s .2

. t=3s .3

.t=0S2S1

. .Ep t=3st=0 Ep .4

. t=3st=0 Em .5

. .f S2 .6

r=20 cm M= 200 g ( .( m= 100 g

.

2 :1

.2

J M r g=10 N.Kg-1.

) 1 (

o

. V t .1

.

.}+{ .2

17

26

h0

EP=0

r1

r2+

S1

S1

t=0 S2

t=3s

t=3s

t=0

d1

d2

O(1)

(2)(3)

Ep=0 O

8/7/2019 SM Examen Concours 2010 2011mod

2/2

. (-(Ag++ NO3 V= 100 cm3 Fe

.m0= 8 g

.Fe2+/FeAg+/Ag - .1

. .2

m0 .3

.

.mi= 5,6 g .4

.

.+Ag.5

..6

. V=500 mL Ca(OH)2 m

S1C1=2.10-2

mol.L-1.

.Ca(OH)2 .1

M(Ca(OH)2)= 74 g.mol-1:.m .2.S11 .3

(AlS2 V2=100 mL S1 V1=100 mL.43+

aq+3Cl-aq)

C2=3.10-2

mol.L-1 HO- Al3+

.

. . ...xmax .

. .

. .

:

FeAg

M(g.mol-1)56108

HO-

Cl-Al

+Ca

+

( mS.m2.mol-1 )207.618.311,89

V t .1

.

.}+{ .2

..3

. ( 2 () 1 (

) :2 (.5

2

2 cos( )

( ).2

mg

Mm r

.=60 .

.(3((=0 ( .6

.o .7

..)2 ()1 (

14

23