Предмет: Физика, автор: savagaboffs

911 плиз я буду очень благодарен​

Приложения:

Ответы

Автор ответа: MeatOrStreet
0

Дано: Решение:

m=2 кг Q=mc(t2-t1) = 2 × 4200 ×

t1= - 10°C. (100 - (-10)) = 924 000

t2= 100 °C Дж

c=4200

Найти :

Q-?

Ответ: 924 кДж

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Математика, автор: philippe2
пример на фото помогите пожалуйста​
5 лет назад
Предмет: Английский язык, автор: ivabnyyfx
ПОМОГИТЕ ПЖ ОЧ СРОЧНО
Listening Comprehension Test
For 6th form students

Text 1. Our School Year
We start school at the beginning of September. It's autumn but it's sometimes very sunny.
At the end of autumn it's usually cold and windy. It's sometimes stormy and it's often cloudy and
rainy, too. There's a special day in autumn – November 5th – Guy Fawkes' Day. On this day we
make a Guy – a man – from newspapers and clothes. Then we burn him on a bonfire and watch
fireworks.
Winter is a good season! I play football for the school team. There's a match every
Saturday and our team usually wins. It's always cold in winter and it's sometimes snowy, too. We
can't play football then.
I like spring. It's sometimes rainy but it's usually sunny – and we have a good time at
school! We always go on school trips in spring. We visit interesting places – castles and take
sandwiches for lunch.
Summer is my favourite season. It's usually sunny and hot. We always have Sports Day in
June. Vicki's a great runner and she usually wins the class race. The school year ends in the
middle of July and then summer holidays start!

While-listening task #1

Directions: in this part of the section you will listen to the text. While the first listening
look at the statements 1-10, decide, which of them are true (T) and which are false (F) according
to the text you have heard.
Task #1. Mark the following sentences as TRUE (T) or FALSE (F).
1. It’s often sunny in autumn.
2. The wind blows and it rains at the end of autumn.
3. They celebrate Guy Fawkes' Day in the middle of autumn.
4. On this day they make dolls.
5. Rob likes winter.
6. Rob plays football in winter.
7. It always snows in winter.
8. It's usually sunny but it often rains in spring.
9. Spring is a great season for schoolchildren.
10. Robby has Sports Day in the middle of summer.

While-listening task #2

Directions: in this part of the section you will listen to the text for the second time. While
listening look at the sentences 1-10, decide, which of the given answers (a, b, or c) best
corresponds to what was stated or implied in the text you have heard and mark your answer by
encircling the letter of your choice.
Task #2. For sentences (1—10) choose and circle the correct answer (a, b or c ).
1. Guy Fawkes' Day is a __________ day in autumn.
a) specific b) sunny c) special
2. They can _________ fireworks on Guy Fawkes' Day.
a) make b) set off c) see
3. Rob’s football team ___________ wins.
a) seldom b) usually c) always
4. There's a football match _________ Saturday.
a) on b) next c) this
5. They can go on excursions to ____________.
a) schools b) towns c) castles
6. They take sandwiches ____________.
a) on trips b) to school c) to football matches
7. Rob likes __________ most of all.
a) winter b) spring c) summer
8. Vicki usually wins the ____________.
a) competition b) match c) trip
9. Vick can __________ very well.
a) swim b) run c) play football
10. Summer holidays begin __________ of summer at Rob’s school.
a) in the middle b) at the end c) at the beginning
5 лет назад
Предмет: Биология, автор: anastasiiakren
при развитии вегетативной почки образуется
1:видоизменённый стебель
2:новая почка
3:побег с листьями
4: соцветие
СРОЧНО!!​
5 лет назад
Предмет: Математика, автор: helen117
Сколько существует таких натуральных чисел A, что среди чисел A, A+10 и A+20
ровно два четырехзначных?
8 лет назад
Предмет: Математика, автор: нюти1
помогите срочно решить.
8 лет назад