-
Какое количество теплоты необходимо для превращения кусочка льда массой 200 грамм взятого при температуре 0 целых 2 десятых градусов цельсия в воду при температуре20градусов цельсия
Ответы 1
-
Дано:m=0.2кг.t₁=0.2t₂=20c=2100 Дж/кг·°СQ - ?Решение:Q=cm(t₂-t₁)Q=2100 Дж/кг·°C · 0.2кг(20°C-0.2°C)=8316 ДжОтвет: 8316 Дж.
-
Автор:
grant - 5 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
- определите широты в которых расположен Индийский океан. Сделайте вывод об изменении температуры его поверхностных вод с севера на юг.
-
Перевести в пассивный залог.
Помогите пожалуйста, очень срочно надо!
Johann Heinrich Pestalozzi
Johann Heinrich Pestalozzi (January 12, 1746 – February 17, 1827) was a Swiss pedagogue and educational reformer, who greatly influenced the development of the educational system in Europe and America. Pestalozzi’s method became widely accepted, and most of his principles have been absorbed into modern elementary education.
He presented two general purposes of education: for development of the individual and for the improvement of society.
Pestalozzi asserted that education should be centered on the child, not the curriculum. Since knowledge lies within human beings, the purpose of teaching is to find the way to unfold that hidden knowledge. Pestalozzi advocated direct experience as the best method to accomplish this. He also advocated spontaneity and self-activity, in contrast to the teacher-centered and curriculum-based methods used in other schools.
He advocated an inductive method, in which the child first learns to observe, to correct its own mistakes, and to analyze and describe the object of inquiry. The child starts with simple objects and simple observation, and builds toward more complex and abstract things. Only after that can the child start to use books.
In order to allow children to obtain more experience from nature, Pestalozzi expanded the elementary school curriculum to include geography, natural science, fine art, and music.
Pestalozzi maintained that the classroom should be like a family. The atmosphere must be loving and caring, like in a good Christian family, where the family members are cooperative, loving, and kind to one another.
Based on this assumption, Pestalozzi suggested that teachers always need to be loving and kind, and earn the trust of the children.
-
Предмет:
Английский язык -
Автор:
fonziepwps - 5 лет назад
-
Ответов:
3 -
Смотреть
-
-
Укажи слово, образованное с помощью суффикса: Холод, заезд, жара, прыжок.
-
Предмет:
Русский язык -
Автор:
welch - 5 лет назад
-
Ответов:
3 -
Смотреть
-
-
у меня такая просьба мне надо армянский гимн, написать в русской транскрипции.
-
Предмет:
Литература -
Автор:
graham - 5 лет назад
-
Ответов:
1 -
Смотреть
-
Топ пользователей
-
Fedoseewa27
35934 -
Askold
2792 -
Pikachu
2228 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
770
How much to ban the user?
1 hour
1 day
100 years