Question

Помогите пожалуйста

Answer 1

Ответ:

Объяснение:

$left { {{R = dfrac{U}{I}} atop {R = dfrac{rho L}{S}}} right. to dfrac{U}{I} = dfrac{rho L}{S} to rho = dfrac{US}{IL} = dfrac{53*0.19}{6.09*0.023} = 71.893~dfrac{Om*mm^2}{m}$