>> . . 10 .

6.

 


, , . ( ).

. .

1

V = 1 3 m = 12 ; ρ = 8 10-3 /3 = 1,1 . k = 5 ? , .

. m1 = ρV = 8 10-3 (, , ).

m + m1 = 2 10-2 . , kV, m2 = ρkV = 4 10-2 . m + m1 < m2, .

.

2

V1 = 0,5 3 m = 0,5 . t = 147 . ΔV , ? t = 147 0 = 4,7 105 .

. 0

= 0,018 / . V1 > V . ,

0,3 3.

3

m1 = 537 , t1 = 200 , m2 = 400 t2 = 16 . t = 50 . . 1 = 920 /( ). 2 = 4200 /( ), (tK = 100 ) r = 2,26 /. .

. , :

Q1 = c1m1(t - t1).

, , , t2 t:

Q2 = c2m2(t - t2).

, m3 t tK :

Q3 = c2m3(tK -t) + rm3.

, :

Q3 + Q3 + Q3 = 0.

c1m1(t - t1) + c2m2(t - t2) + c3m3(tK - t) + rm3 = 0.

4

. 6,5 . . 1 , . 60 /. t = 5 . ?

. = 6,5 . . t = 5 . , . , , V = 3600 . ,

5

, t1 = 10 φ1 = 60%. φ2 n (n = 3) t2 = 100 ? t1 ρ = 9,4 10-3 /3.

. t1 ( ) ρ1 = φ1ρ. , ( , , ), 2 = nρ1ρ = 1,69 10-2 /3.

t2 = 100 0 = 105 ,

= 0,018 /.

ρ3 > ρ2,

 

 

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