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. . в . . Ѫ . . . . Բ-Ͳ - (20122013 ) - 2013 ...

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( 1 20.01.2013) . . , . . , . . , . . - - 쳿 (2012 2013 . .). - / [ . . . ˳]. ., 2013. 71 .

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- - , : PHYWE, Fourier, Celestron, Tokyo Boeki Technology Ltd.

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- - , , ϲ, - , , , , - , - ϲ, - , , , 20122013 . .

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= = ( )

   

1. , . 3 /. , 50 ?

: , . ϳ /. =2 =17,67 c.

2. Ѳ = 2 + 6t 3t2. 3 ?

: v = 6 6t. , 1 . x1 = 2 + 6 1 3 12 = 5 . , 2 , 3 . 3 x3 = 2 + 6 3 3 3 2 = 7 . , , S = 3 + 5 + 7 = 15 .

3. ҳ 2 , 24 . , 75% ?

: 12 /. , v = 24 /. v 2 v 0 = 2aS , 75% .

4. 20 , . 1 ?

: , , . : t = 2 . = 40 . : = 20 /. ϳ 20 /, . 1 10 /. ϳ = 22,36 /.

=

5. 5 , , 30. ?

: , = 10 /.

³ 30 ( , , ). г . ҳ , . ϳ , : = 2 .

6. 36 /. 5 , 60 ?

: 10 /. 5 = 300 . 5 3000 . 2R = 1,884. ʳ 5 N = 1592.

11

1. , 10 /, 100 . 5 ?

: 100 . , :

y1 = 100 + vt = 100 + 10t. , , . gt 2 y 2 = 100 + 10t. ³ gt 2 = 125 .




140 .


y = y1 y 2 =

2. , , 50%. ?

: , () .

.

: ma = N mg, ma 2 = mg N 2. N = 1,5mg. a = 5 /.

3. 40 䳺 , 30 . , 0,3.

: , . . x: 0 = F cos N, y:

0 = F sin + N mg. N , , mg = 120 .

F= cos + sin

4. ҳ m, 3v, , 2v. ?

: , 䳿 䳿. 䳿 ϳ: p1 = (4mv) 2 + (3mv) 2 = 5mv. ϳ 䳿 3m, v 2. 5mv = 3mv 2. v 2 = = 1,67 /.

5. 100 1 . 1 ? .

: , , S1 = 4 A. 1 100 , , , S = 400 A = 400 . v = 4 /. v = = 2 = 6,28 /.

   

-4 -2 2 4

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) ³ , ; , , y = 2 x, y = 2 x (, x 0, oy ) y = 2 x ( ox ).

-3 -2 -1 1 2 3

-2

-4

-6

-8

   

, x [8; 5) (5; 3) (2;8].

: 8, 7, 6, 4, 3, 4, 5, 6, 7, 8, .

   

3. , 5 /, 5 / 10 / 2,5 / : 5 /. , 10 /. .

4. 40 /, ,

   

t1 = 1 , S1 = 5 . , 2 , 4 , S 2 = 20 . 15 . .

   

: 4 /, 2 /2.

4 4 /. 8 /. .

   

, v 2 = 300 = 17 /. , : 5 ? 15 . .

12. , : 1 , 2 , 3 , 4 . , 90. 10 4 2,5 : : , . F13 = 2 , F24 = 2 . ϳ F = F13 + F24 = 2 2 = 2,8 . .

   

14. , , , 䳺 , : . : ( ), . : ( ). : ( ) . , , , . .

   

16. 10 40 /. 5 , 80 / 40 / 16 / : . , kl E =. S : , , . , 2 , 2 80 /. .

   

6. , 4 , 8 , 9 . , .

: ABC. AB = 4, AC = 8, BC = 9. AK BC. BK = x, KC = 9 x.

   



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