7. . 2 :
) :
| ρ = + + + = 2340 2480 |
) -:
| = 1000 /ρ /ρ /ρ /ρ = 0 |
- +/- 30.
8. .
. . . :
1. .
2. ( ).
| W = (mw - mc) mc |
| *100% |
| mw = mc (1 + W/100) |
:
w = (1 + W/100)
: = -
9. .
:
1. 1 3
: =350 /3, =175 /3, =700 /3, =1150 /3
2. , 1 /: ::=1:2:3,28, / =0,5. 1 3 , ρ. ρ : 1+2+3,28+0,5 = ρ; =ρ/6,78.
10. .
. 2- :
1- (): . =*V
: - ;
V ;
2 : . :
V=β*V; =*V
: β- ( )
| β= |
| + + |
| ρ, ρ, ρ, |
: β ~ 0,62 0,7; β = 0,67 .
11. ( ).
1. (, , , ).
:
- (/);
- ≈ 15% /; 1,15 (/)0;
- ≈ 15% /; 0,8 (/)0;
|
|
|
2. . 6 .
3. .
4. ( ).
5. .
6. .
7. , .
8. :
| R2 |
| R0 |
| R3 |
| R |
| R=A(/-b) - |
| / |
| (/),3. |
| (/),0. |
| (/),2. |
| (/). |
| Ri |
| (/)i -b |
| = |
: b () ;
, /
9. ρ, .
1<B .
+1++=m - .
m/ ρ,=V - , :
V - :()::
1000 -
| 1,3 = 1000* /V = 1000 * /m * ρ, |
10. /.
