(115)
, (114) (115)
Ѳ :
1=0,
(r). 1 ( < ) E =0. 2
r = = r = (r ) 3 (r > ) , r = (r ) . , (r) r = r = .
r .21.
21
22. =4 =-2 , a =0,1 . Q =50 1 2 (.22).
22 Q 1 2
.
(116)
, 1 2
, (117)
. (118)
, (117) (118) (116),
,
ϳ Ѳ
³:
23 R =1 , =20 /. , =0,5 =2 c , (.23).
23
. . ,
,
, .
, , :
. (119)
, , :
. (120)
ϳ (120) (119),
(121)
, , , (121) , ( = R + =1,5 , = R + =3 ):
³: .
24 ( =50 /) a- (u 0 = 0). a- 2 8 R (.24).
. , 㳿 a- 2 㳿,
24 Q 1 2
|
|
E 1 = E 2, 1 2 - 㳿 a -- 1 2.
E l = + E 2= + ( - 㳿 a-; 㳿), , , = 0 ( 0 = 0), = + + .
, (122)
Q - a -; - 1 2.
( (121)),
. (123)
(123) (122)
.
Ѳ , ,
= 3,96 .
³: = 3,96 .
25 R = 20 D t = 2 I 0 = 0 I = 6 (.25). Q 1, Q 2, , Q 2/ Q 1.
. - (I = const). ,
, (124)
I .
(.25)
25
, (125)
k - , :
.
(125) (124)
. (126)
, D t, (122) t 1 t 2:
.
:
Q 1 = ×3220×(1-0) =60 ,
Q 2= 3220× (8-1) = 420 ,
Q 2/ Q 1 = 420/60 = 7,
, .
³: Q 1 =60 ; Q 2= 420 ; Q 2/ Q 1 = 7.