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82. По горизонтальной трубе в направлении, указанном на рисунке стрелкой, течет жидкость. Разность уровней Δh жидкости в манометрических трубках 1 и 2 одинакового диаметра составляет 8 см. Определить скорость течения жидкости по трубе.
82. По горизонтальной трубе в направлении, указанном на
