Question

Помогите физика 8 класс

Answer 1

Ответ:

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