5 , , 9 4 . .
: | : |
Δ t = 5 = 5*10-3 c 1 = 9 = 9*10-3 2 = 4 = 4*10-3 | = Δ/Δ t = 12/ Δ t = −((9 × 10−3) − (4 × 10−3)) / 5 × 10−3 =1 |
: ε -? | : ε = 1 . |
, , 8 32 . .
: | : |
t = 8 c n = 32 | v = n / t v = 32/8 = 4 T = 1/ v = 1/4 = 0.25 |
: T -?; v -? | : 4 , 0.25 |
" ".
, 10 50 ? 25 . .
: | : |
I = 25 A F = 50 = 0,05 L = 10 = 0,10 α = 90 | B = F / (I*L*sin α) B = 0,05 / (25*0,10*1)= 0,02 = 20 |
: B -? | : 20 . |
, 20 , 10 .
: | : |
C=10 = 10*10-6 L=20 | T=2π*√LC T=2*3,14*√20*10*10-6=88. 81261171 *10-3 c v=1/88. 81261171 *10-3 = 0,01125966212 *103 = 11.25966212 |
: T -?; v -? | : T = 88.81261171*10-3 c; v = 11.25966212 |
1-
2,5×10 4 . 1,25×10 5 , 2 2. ?
: | : |
P=25000 Q=125 000 Δ V = 2 2 | (V2-V1) = 2 2 Q = A+ Δ U Δ U=Q-P* Δ V= 125-50 = 75 |
: ΔU-? | : 75 |
" ".
-
, 75 , 180 . 1,5 ?
: | : |
R = 75 U = 180 B t = 90 . | Q = I2RT I = U/R I = 180/75 = 2.4 Q=2.42*75*90= 38880 |
: Q-? | : 38880 . |
d Q1=+8 Q2=-5,3 40 . E , .
: | : |
q1 = +8=8*109 q2 = -5.3 = -5.3*10-9 r=0,4 k=9/109 | = 1+2 L=r/2 =0.4/2 = 0.2 =kq/L2 E1= 9*109*8*10-9/22*10-2=1800 H/ E2= 9*109*(- 5.3)*10-9 /22 *10-2= 1192.5 H/ E=1800+1192.5=2992.5 H/ |
: -? | : 2992.5 /. |
|
|
R 1 = R 2 = R 3 = R 4 =20 , , . R1 R2 R3, R4.
: | : |
R1,2,3,4 = 20 | R1,2 = 1/R = 1/R1+1/R2 = R2+R1/R1*R2 = R1*R2/R2+R1 = 20*20/40 = 400/40 = 10 R1,2,3 = R1,2+R3 = 10+20 = 30 R1,2,3,4 = 1/R = 1/R1,2,3+1/R4 = R4+R1,2,3/R1,2,3*R4 = R1,2,3*R4/R4+R1,2,3 = 30*20/20+30 = 600/50 = 12 |
: . -? | : 12 . |
.
, 100 ?
: | : |
A = 5,3 h =6,63*10-34 c=3*108 m=9,1*10-31 λ = 100*10-9 | h ν =A+E; E=hc/λ; E =mv2/2; E-A=E ; hc/ λ =A+mv2/2 v2=2*(hc/ λ -A)/m A =5,3*1,6*10-19 = 8,48*10-19 v2=2*(6.63*10-34*3*108/100*10-9-8,48*10-19) /9.1*10-31= 2.5*1012 v = 1.58*106 |
: v -? | : 1,58*106 / . |