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Определить работу силы тока, если через поперечное сечение проводника прошел заряд, равный 5 Кл, а напряжение на участке цепи равно 20 В
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Предмет:
Физика -
Автор:
halliestokes - 6 лет назад
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Ответы 1
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Ответ:
А=100 Дж
Объяснение:
A=P*t=U*I*t=U*q=20*5=100 Дж
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Автор:
solomon16 - 6 лет назад
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0
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Помогите с тестом нужны ответы
Grammar test 2
1 to be
Complete the sentences with the correct form of the verb to be.
Are you from Germany?
1 I _______ a doctor. I’m a dentist.
2 A: Is your husband English?
B: Yes, he _______.
3 Yes, Anna _______ my sister.
4 We _______ teachers. We’re students.
5 Paulo _______ Spanish. He’s Argentinian.
2 subject pronouns; possessive adjectives
Choose the correct answer.
Laura’s husband is an architect and _____ name’s Mike.
a his b her c its
1 I’m French and _____ wife’s from Italy.
a our b their c my
2 Maria’s from Australia and _____’s a chef.
a they b she c we
3 _____’re teachers and my parents are teachers too.
a She b He c We
4 My cousins aren’t in Paris, _____’re in Rome.
a we b they c you
5 So you’re an actor and _____ wife’s a television producer?
a your b our c their
3 a/an
Put the jobs in the box in the correct column.
actor architect assistant chef doctor engineer farmer sea captain student teacher unemployed person
a an
sea captain _________
_________ _________
_________ _________
_________ _________
_________ _________
_________
Vocabulary
4 countries and nationalities
Complete the sentences with the correct nationalities.
Luis is from Brazil. He’s Brazilian.
1 Vaclav is _______. He’s from the Czech Republic.
2 Magda and Tomas are from Poland. They’re _______.
3 Keiko is _______.She’s from Japan.
4 A: Are you from France?
B: Yes, I’m _______.
5 Brad is from the USA. He’s _______.
5 families
Complete the sentences with family words.
My mother’s father is my grandfather.
1 The daughter of my sister is my _______.
2 My wife’s mother is my _______.
3 My aunt’s children are my _______.
4 The husband of my mother is my _______.
5 My uncle’s wife is my _______.
6 jobs and work
Write the missing letters to complete the jobs.
computer programmer
1 c_ _f
2 d_n_is_
3 f_rm_r
4 t_a_her
5 s_ _p as_ista_t
Reading
7 Read about Dawn’s family and answer the questions.
Hi. My name’s Dawn. I’m sixteen years old and I’m Canadian. My grandparents are British but they’re not in England now, they’re in Vancouver. My father’s name is Brad and he’s a farmer and my mother, Angie, is a teacher. There are three children in our family. My brother Ron is an engineer and my sister Ellen is a student at university in Vancouver. She’s twenty-one.
Ron is married and his wife’s from Argentina. Her name’s Marcela and she’s at home with their two children. Their names are Luis and Maria. Luis is four years old and Maria is two years old.
We’re a happy family!
How old is Dawn?
Dawn is sixteen years old.
1 Where is Dawn from?
Dawn’s from ____________.
2 Where are her grandparents from?
Her grandparents are from ____________.
3 Who is Brad?
He’s Angie’s ____________.
4 Who is Marcela?
She’s Dawn’s ____________.
5 Who are Luis and Maria?
They’re Brad’s ____________.
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