23
23.1. α = 300 . Δ t = 5 Δ = 200 . . .
23.2. Z , , . ( ) 10 .
23.3 , , . 셅
23.4. U = -6 x 2 yz. Fx ( ), (2, 3, 1). U
23.5. , . W 1 = 0,5 . , m = 1, R = 10 .
24
24.1. . 1 , . .2 . ?
24.2.. R= 10 , . , , .
24.3. , = 1 ×2×-1, =2 ×2×-3. , , .
24.4. . m = 100 . , 1, - ?
24.5. m = 0.3 R = 0.5 , 1200 , , ., , , , 800?
25
25.1.
= 2 t 2, = 2 t, z = const.
, ,
|
|
1)
2) ,
3) , ,
4) ,
.
25.2. φ t. . ?
25.3. l = 50 m = 300 , 1/6 (. ).
25.4. . 1 = 0,1 2 = 0,2
25.5. m = 5,0 14 /. . , 50 ?