I = U/Z
Z = √(R² + (X₁ - X₂)²)
X₁ = ωL
X₂ = 1/ωC
ω = 2пf
U = 220 В
f = 50 Гц
L = 5.2·10⁻² Гн
С = 1.2·10⁻⁴ Ф
R = 15 Ом
X₁ = 2·3.14·50·5.2·10⁻² = 16.3 Ом
X₂ = 1/(2·3.14·50·1.2·10⁻⁴) = 26.5 Ом
Z = √(15² + (16.3 - 26.5)²) = √(225 + 104) = 18,1 Ом
I = U/Z = 220/18.1 = 12.2 А
<span>Дано Решение</span>
n <span>= 2*1022м-3 </span>P=1/3m0nυ2кв;
U<span> = 500 м/с m0=M/NА;</span>
P<span>-?
</span>P=1/3(M/NА)nυ2кв;
<span> </span>P = 0,002/(3*6,022*<span>1023)</span>*<span>2*1022</span>⋅<span>5002= 5 Па</span>