Предмет: Математика, автор: Ailin111

Глубина колодца, имеющего форму прямоугольного параллелепипеда, равна 9 м, площадь основания колодца 2.4 × 1.5 м. Уровень воды в колодце находится на глубине 1.3 м от поверхности земли. Сколько литров воды в колодце?

Ответы

Автор ответа: GlebGor1998

Объем столба воды в колодце равен = 2,4 * 1,5 *(9 -1,3) = 2,4 * 1,5 * 7,7 = 27,72 куб.м. = 27720 л
Ответ : Воды в колодце -27720л

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Welding is a process when metal parts are joined together by the application of heat, pressure, or a combination of both. The processed of welding can be divided into two main groups: pressure welding, when the weld is achieved by pressure and heat welding, when the weld is achieved by heat. Heat welding is the most common welding process used today.

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The welding processes widely employed today include gas welding, arc welding, and resistance welding. Other joining processes are laser welding, and electron-beam welding.

Gas Welding

Gas welding is a non-pressure process using heat from a gas flame. The flame is applied directly to the metal, edges to be joined and simultaneously to a filler metal in the form of wire or rod, called the welding rod, which is melted to the joint. Gas welding has the advantage of using equipment that is portable and does not require an electric power source. The surfaces to be welded and the welding rod are coated with flux, a fusible material that shields the material from air, which would result in a defective weld.

Arc Welding

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create a weld.

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