17
17.1. Sx t, . . V 0 x .
17.2. φ , , t. 2/. ( ).
17.3. , , , .
.
17.4. , ? .
17.5. , , . , m = 2,0 t = 12 h = 1 . r = 8 . .
18
18.1. .
?
18.2. Z. (.1). .2
18.3. , 1. , . 1
, . 1 :
1) ; 2) ;
3) 4)
18.4 , φ = 2+16 t -2 t2, . J = 50 ∙2. , N. t = 3.
18.5. R = 2,0 n = 60 /. m = 0,3 . h, , N.
19
19.1 .
= 2 t 2, = 2 t, z = const, .
, ? t = 3 .
|
|
19.2. , , t. N, .
19.3. , φ = 2+16 t -2 t2, . J = 50 ∙2. , . t = 3?
19.4. φ . t 1 t 2?
19.5 m = 200 V = 6 /, α = 600 , m 1 = 2 m, V 1 = V /2 . , Q .