В сообщающихся сосудах налиты две несмешивающиеся жидкости. Известно, что плотность второй жидкости 1250 кг/м в кубе. Высоту столбов жидкости измеряют от нулевого уровня. Высота столба первой жидкости 47 см, высота столба второй жидкости 26 см. Найдите плотность первой жидкости.
Pushkin's poems, the girl's voice, the new workers' club, the pete's letter, my parents' car, the woman's life, the women's handbags, my sister's flat is large, my brother's children are at home, the boys' room is large, this girl's name is jane, the students' work is interesting.
The fireman is a very interesting and dangerous profession.when the fireman helping people, he risks his life.this people must have good physical parameters.and he must be brave and don't afraid come in the burning house. this profession very intense because for fireman depending life of the peoples,therefore he must be responsible and was good reaction.as this profession was a good paying maybe this is one of its pluses. the firemans was respecting and considering a hero.they was authority at many people
