. : , .
:
X = kg A t /r2, (34.6)
, .
: .
, . , - . :
, ;
, ;
1,5 2 , ( ; ; );
, , .
.
, , . 2 7 , 40 100 (.34.3).
. 34.3. g-
, . , 40 /2 . 2×1011 / .
(D) | , D, , Dm : D = DE/Dm. (34.1) : ( = /); ; 1 = 102 , 1 = 100 . |
1 = 1,610-13 . | |
() | , , , , . |
() | , , : = ×D. (34.2) : (); ; 1 = 102 , 1 = 100 . |
() | : = SbT. : . |
() | , , . : /; (); 1 = 2,58×104 /, 1 / = 3876 . |
D () = f×X (). (34.3) f = 1. | |
(N) | , , : ND = D/t. Nx = X/t. N = /t. (34.4) |
, | Nx = kg A/r2, (34.5) - ; r ; kg -, . |
() | , . |
20 /; 1 /. | |
, . | |
, . . | |
, . | |
, , . | |
, . |
|
|
34.1. , g- D1 = 200 . ( ) D2 = 20 . .
g- = 1D1; = ʷD2. = D1/ D2 = 10.
. = 10.
34.2. ( ) 70 g- = 600 ? = 4,2×103 /. , .
600 600 ; 1 = 0,01 /. D = 6 /. = Dm = 6×70 = 420 .
Q = E, Q = cmDt Dt = E/(mc) = 420/(70×4200) = 1/700 .
. Dt = 0,0014 K.
34.3. , 60 6 g-, 30 /. , , , . .
= NXt = 306 = 180
D () = f×X (); f = 1. D = 1180 = 180 = 1,8 .
= ʷD; g- = 1. = 1,8 = 180 .
D = Dm = 1,860 = 180
. = 180 ; D = 180 = 1,8 ; = 1,8 = 180 ;
D = 180 .
34.4. , 400 (50% ). .
|
|
(. 34.3)
D = 1400 = 400 = 4 . = 4 = 400 .
. D = 1400 = 400 = 4 . = 4 = 400 .
34.5. m = 10 109 a- = 5 . . a K = 20.
: = 51,610-13109 = 810-6 .
D = E/m = 810-6/10-2 = 810-4 .
= ʷD = 20810-4 = 1,610-2 = 1,6 .
. 1,6 .
34.6. g r = 0,1 Nr = 3 /. , 6 . = 20 /. g .
( )
= 20 . g =1.
D = / = 20 = 2 .
= D/f; g f=1 X = 2 .
R: NR = Nr(r/R)2.
, (365 6 ): = NR3656 = Nr(r/R)22190.
(R/r)2 = Nr2190/ = 32190/2 = 3258.
R/r = 57; R = 57r = 570,1 = 5,7 .
. R = 5,7 .