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>> 10 . |
14.
, . , . , , . 1. m = 0,03 ? m0 = 3 10-23 . . (2O) 10 . 2. I = 2,0 . q = 2,0 10-8 , r = 16 . .
. : m , , OY . , , F - sinα = 0.
OY Tcosα - mg = 0, , cos2α = 1 sin2α,
3. q1 = 2 10-4 q2 = -8 10-4 1 . qx , ?
. q1 q2 , ,
X F1 = F'1, F2 = F'2,
qx lx. |qx|: , , lx - 1 . |qx|, |qx| = |q2| = 8 10-4 , qx = -8 10-4 . 4. , r = 90 , F = 80 . , q = 4 10-5 . ε = 2. . , . , q1, q2. q1 + q2 = q, q1 - |q2| = q. (1) :
(1) (2) q1 |q2|. |q2| , q2 = -10-4 , a q1 = 1,4 10-4 . 5. 1 , 10 4 10-6 1 . ρ = 800 /3. ε, 2α = 60.
. , , (. 14.7). m : OX: -Tsinα + F = 0; Y: -mg + Tcosα + F = 0. ,
(1) :
1. , 0,5 10-8 . 2. 1 , 1% , 0,03 ? 3. 40 . 9 10-9 , -2 10-9 . . . 4. 1,0 10-8 2,0 10-8 1 . , , , -3 10-9 . , . 5. 1 ε = 2,2. 9 10-6 , 60. . .
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