-
в ядре атома урана содержится 238 частиц. вокруг ядра движутся 92 электрона. сколько в ядре этого атома нейтронов и протонов?
-
Предмет:
Физика -
Автор:
christian728 - 6 лет назад
-
Ответы 1
-
Число протонов равно числу электронов: 92Число нейтронов=238-92=146
-
Автор:
grumpy1mjd - 6 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
-
ПОМОГИИИИТЕЕЕЕЕЕЕЕЕ!!!!!
Прочитай текст, закончи вопросы к нему и дай на них ответы.
The Adams Family
The Adams family live in Glasgo. They are a big family: a mother, a father, their five children, and their pets. Mr Adams is a farmer. His parents live with him. Old Mr and Mrs Adams are always on the farm. They are farmers too. They like their cows, sheep, and horses and often feed them.
The Adams' children don't go to school.They are little. Polly and Sam are twins, they are four. Fred is five. Ann is three and Alice is two. They are all good friends. The girls like playing with their dog. The dog's name is Jake. He loves running and jumping. He can run and jump very well. The boys like riding their bikes. Fred loves watching television, but Sam hates doing it.
Mrs Adams is a school teacher. She teaches music to boys and girls. She has a lot of pupils. Mrs Adams's pupils are very good. They can play the piano. They sing songs. They like to listen to Mrs Adams. She plays the piano and sings English songs very well.
The Adams family are a happy family.
Образец: ________________________ live in London?
Do they live in London? -- No, they don't. They live in Glasgow.
1. _______________________ live in Scotland?
2. _______________________ a big family?
3. _______________________ a farmer?
4. _______________________ his parents farmers?
5. _______________________ have horses on the farm?
6. _______________________ their children big or little?
7. _______________________ good friends?
8. _______________________ like playing with their dog?
9._______________________ Jake like jumping?
10._______________________ Fred and Sam like riding their bikes?
11._______________________ Fred love watching television?
12._______________________ Sam love watching television?
13._______________________ Mrs Adams teach English?
14._______________________ Mrs Adams play the piano?-
Предмет:
Английский язык -
Автор:
titovacd - 6 лет назад
-
Ответов:
1 -
Смотреть
-
-
предложения с неправильной формы глагола во второй форме
-
Предмет:
Английский язык -
Автор:
alonso6ujr - 6 лет назад
-
Ответов:
1 -
Смотреть
-
-
В первый день продали 12 стульев, во второй -18. Сколько стульев продали в третий день, если всего в эти дни продано 54 стула?
-
Предмет:
Математика -
Автор:
jazlene9prx - 6 лет назад
-
Ответов:
1 -
Смотреть
-
-
Площадь поверхности шара равна 144 п см^2. Найдите объём данного шара.
-
Предмет:
Математика -
Автор:
vernon - 6 лет назад
-
Ответов:
2 -
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