<span>v1 = 55 км/ч,
v2 = 40 км/ч.
t = 20 Мин = 1/3 час
S = (v1- v2) / t = (55- 40) / 1/3 =15 *3 =45 км</span>
<span>r = mV/qB, => V = rqB/m </span>
<span>V = 5*10^(-2)*1,6*10^(-19)*2*10^(-2)/ 1,67*10^(-27) = 96 км/с</span>
T1=2pi*sqrt(L1C1)
T2=2pi*sqrt(3L1*3C1)
(T1^2/T2^2)=4pi^2*L1*C1/4pi^2*9L1*C1
(T1^2/T2^2)=9
T1/T2=3
3раза