, 7 .
1. : 2 . - , 2 , , 20 . (5 )
2. : . , . (5 )
3. :72+6+10+11c. S = 24899*1,6/ = 39838,4 = 39838400. t=S/v=39838400/(6,38128/c)=6243011 . =72+6+10+11c (10 )
4. : 1,129. L1=2πRN = 2*3,14*3,5*50 = 1099 = 1,099. L2=3=0,03. L=L1+L2=1,129. (10 )
5. : 2,5. S = 210 * 297 *500 = 311850002 = 31,1852. m = 31,1852 * 80/2 = 2494,8 = 2,5 . (15 )
| , : 1) , , . 2) ( ) . 3) , , ( ), ( ). | 100% |
| , - , ( ). , , , . | 70% |
| , , . | 40% |
| , . | 10% |
(2012-2013 ..)
, 8 .
1. : 300/. m = F/ g = 500/(10/) = 50. g = F/m = 15000/50 = 300/. (5 )
2. : 7 . = √9 = 3. S = 3*3*4 = 362. S = 1,5*1,2 = 1,82. S = 1*2 = 22. S = 36-1,8-2=32,22. S = 0,5*10,5 = 5,252. N = 32,2/5,25 = 6,13 = 7 . (10 ).
3. : 0,8 
. 
(10 ).
4. : 200. ℓ. ℓ /2, .. 
. (10 )
5. : 68,6. , m , 
mgh. mgh =mc(t2 - t1), t2=1000 . , h =2c(t2 - t1)/g.
h =2 * 4200 (100-20)/9,8= 68,6 ∙ 103. (15 )
|
|
|
| , : 1) , , . 2) ( ) . 3) , , ( ), ( ). | 100% |
| , - , ( ). , , , . | 70% |
| , , . | 40% |
| , . | 10% |
(2012-2013 ..)
, 9 .
1. : 5,4 .
- = 226,91-221,53 = 5,4 (5 )
2. : 100. . . ,
1 = k(20-(-20))
1+ = k(22-(-20))
, 1 = 2000, = 100. (10 )
: 1,25 .
; 
, 
.
(10 )
4. : 51,4%. :
(V0ρ + V ρ)g = α(V0 + Va) ρ g. V0 - .
:
(V1ρ + V ρ)g = (V1 + Va) ρ g. V1 - .
: β = (V0 V1)/ V0. V1 , :
[V0(1- β)ρ + V ρ]g =[V0 (1- β) + Va ] ρ g.
V V0, , β.
: β =1-[(αρ -ρ)(ρ ρ)]/ [(ρ - α ρ)(ρ ρ)] = 0,514;
β = 51,4%.
(15 )
: 1.
F = μN = μ(mg F) = μmg/2
.. 
, 
.
(10 )
| , : 1) , , . 2) ( ) . 3) , , ( ), ( ). | 100% |
| , - , ( ). , , , . | 70% |
| , , . | 40% |
| , . | 10% |
|
|
|
(2012-2013 ..)
, 10 .
