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Вопрос по физике:
Радиоактивны изотоп 24 11 Na претерпевает два раза “a” , в 2 раза “B” распад, определите вновь образовавшегося ядра. Нужна реакция.-
Автор:
jagger
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Еще 4 ненужных тебе вопроса, но это важно для поиска
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Вопрос по географии:
какой объект всемирного природного наследия расположен на территории восточной сибири?-
Ответов: 1
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6 лет назад
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Вопрос по математике:
N1368.
Выразив переменную у через переменную х, найдите два каких-либо решения уравнения:
1) х+у-3=0
2)х+4у+12=0
3)-2х+у-7=0
N1369
Выразив переменную х через переменную у, найдите два каких-либо решения уравнения:
1)х-5у-3=0
2)2х+7у-10=0
3)4х-у-8=0-
Ответов: 2
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6 лет назад
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Вопрос по английскому языку:
Промежуточная аттестация. 10 класс.
1. You ..... see a dentist about that toothache of yours.
Abought B) better C) should
2. Harry, .... is very keen on computers, is studying to be a graphic
designer.
A)whom B) who C) whose
3. Linda is very ..... to his friends and will never disappoint them.
A) caring B) patient C) loyal
4. You're really late! I ..... for you for over an hour!
A)have been waiting B) was waiting C) have waited
5. When Helen got to the station, the train ......
A)had just left B) just left C) has just left
6. My friend left the window open; I ..... it immediately.
A)'m closing B) 'll close C) '11 be closing
7. Sam's starting .... at his new job is 30.000 euros a year.
A)debt B) salary C) wage
8. Fruit and vegetables are rich ..... vitamins and minerals.
A)in B) of C) on
9. Alex was running in the park when he ..... someone calling for
help.
A)had heard B) was hearing C) heard
10. Sarah wants to ..... in her school's singing competition.
A)participate B) attend C) apply
11. Tonya was making a salad ..... her sister was laying the table.
A)until B) while C) after
12. The ground was covered ..... fallen leaves.
A)of B) with C) by
13. The law clearly states that all car drivers and passengers .....
wear a seat belt.
A) must B) can C) may
14. My classmates often pick ..... me because I'm quite short.
A) of B) at C) on
15. Tom Barney, ..... father is a famous writer, is in the same
class as me,
A) that B) who C) whose
16. Tracy..... at a company for seven years before he started his
own business,
A) had been working B)was working C)has been working
17. Do you get ..... well with your new neighbours?
A) by B) on C) in
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Ответов: 1
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6 лет назад
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Вопрос по математике:
Вырази время в указанных единицах 1ч 15мин=...мин 3ч 6мин=...мин
1 сутки 4часа=...часов 4 века=...лет
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Ответов: 1
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6 лет назад
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