Предмет: Физика, автор: csuna1

Какое количество теплоты необходимо, чтобы нагреть воздух в комнате размером 4 х 5 х 3 м на 5 градусов цельсия? Плотность воздуха 1,29 кг/м^{3}

Ответы

Автор ответа: MashaPutnaj

0

дано V=60 м3 p=1,29 кг/м3 c=1000 Дж/кг*С Q- ?

Q=c*m*(t2-t1)=c*p*V*(t2-t1)=1000*1,29*60*5=387 кДж

Ответ Q=387 кДж

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: История, автор: zeynabbahrieva4

урок история Казахстана Составьте конспект на тему присоединение южных районов Казахстан с Российской империи помогите пожалуйста

7 лет назад

Предмет: Музыка, автор: almira001b

та была улыбка похоже на рай
продажи песню и получи баллы

7 лет назад

Предмет: Английский язык, автор: Helpplees

задайте 2 вопроса по каждому тексту 1. more than 20000native americans came to the american continentfrom asia they travelled all the way throught siberia and alaska before europeans arrived in america native Americans, or Indians, lived in
tribes!. The tribes were very dif-
ferent: some grew their food,
some ate the food they could
find. There were also tribes of
fishermen and hunters. They
lived in wooden houses, or wig-
wams, and thought that there
were spirits around them – in
trees, mountains, fire or water.
Spirits could bring them success.
To make their spirits kind, Indians had ceremonies with danc-
ing and music. Indian songs and poems helped them to re-
member their traditions and history. Most of Native Ameri-
cans in those days could not write. Indians were fairly peace-
ful and hoped to live happily on their land where they could
hunt and fish freely.
2.
Europeans took most of their land. Indi-
ans fought to defend their homes, their
way of life and their culture. In the 19th
century the US government decided that
Native Americans must live far
live far away
from their lands on reservations. Many
Indians still live on reservations. Usually
they are poorer than other Americans.
At the same time they often try to keep
their traditions and their language. There
are regular festivals where Indians per-
form their dances and play their music.

7 лет назад

Предмет: Литература, автор: MisterAlexWolf

Характеристика Печорина в романе "Герой нашего времени". Желательно кратко.

10 лет назад

Предмет: Обществознание, автор: orangenastua

Как называется процедура формирования государственного органа осуществляемая посредством голосования правоспособных граждан
1)выборы
2)ротации
3)законотворчество
4)изделение полномочиями

10 лет назад