Какая масса кремния получится при восстановлении углём 40 г оксида кремния 4,содержащего 10% примесей?

Найти трехзначное число, зная, что число его единиц есть среднее геометрическое числа сотен и десятков, если в его записи поменять местами цифры сотен и десятков и вычесть полученное число из искомого. то разность будет равна 270.

от чего зависит и как направлена сила действующая на заряженную часицу, находящуюся в электричеком поле

Помогите!!!! Read the text attentively and make up questions on it/ Write them down

At the beginning of the 19th century women in America didn't have equal rights with men, ...? ... to speak in public or vote or study at most colleges? Who decided ...? When ... to discuss women's rights? What ... after their meeting? What rights ...? Women in America received their rights soon after they began fighting for them, ...? What ... understand?

Вот текст:   At the beginning of the 19th century women in America did not have equal rights with men. They did not have the right to speak in public, to vote. They were not allowed to study at most colleges. In most states married women could not own land or houses. Two women Elizabeth Stanton and Lucretia Mott decided to meet with other women to try to change laws and customs. In 1848 women from all over the country met to discuss women's rights. After their meeting where all men and women were declared equal, women began publicly speak about their rights, the right to own and sell property, to get education, to work at any job or in any profession, to vote; in fact to be equal with men. Many years passed before women began to receive these rights. Many women understood they had to work together for the rights of all people, be they black or white, men or women, slaves or free.

На одном грузовике работали 60ч., а на другом-54 ч. При одинаковомрасходе бензина в час на первой машине израсхоовали бензина на 72 л больше, чем на второй. Сколько литров бензина израсходовали на каждой машине? мы решаем без икса (x)