Предмет: Физика, автор: piery

СРОЧНО! ПОЖАЛУЙСТА! При равномерном увеличении тока на 0,05 А за 0,02 с в катушке фиксируется эдс самоиндукции 5В , следовательно индуктивность катушки имеет значение ... (в Гн)

Ответы

Автор ответа: nelle987
0
mathcal{E} = Ldfrac{Delta I}{Delta t}\
L=dfrac{mathcal EDelta t}{Delta I}=dfrac{5cdot2cdot10^{-2}}{5cdot10^{-2}}=2,text{H}
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1. Circle the correct words
‐ Look! I (1) _________ a photo of (2) _________ Australian friends! ‐ (3) _________ two teenagers (4) _________ the picture. What are (5) _________ names? ‐ Bill and Rose. ‐ Look! (6) _________ a geography book in Bill’s hands. Is geography (7) _________ favourite subject? ‐ Yes, (8) _________ is. Bill (9) _________ a lot of maps (10) _________ the walls (11) _________ his bedroom. ‐ And what about Rose? What’s (12) _________ favourite subject? ‐ (13) _________ is music. Rose likes music very much. She (14) _________ a great CD collection (15)
1. a) ’ve got b) ’s got c) ’m
2. a) an b) my c) ‐‐‐
3. a) There are b) They are c) There is
4. a) in b) at c) on
5. a) his b) their c) her
6. a) There are b) He has got c) There is
7. a) his b) my c) her
8. a) he b) she c) it
9. a) have got b) has got c) is
10. a) behind b) in front of c) on
11. a) in b) at c) on
12. a) his b) our c) her
13. a) she b) these c) it
14. a) is b) has got c) can
15. a) at b) at the c) in
2. Put the words in the correct order and complete the dialogue
a we / are / here.
b in / is / there / that / what / house?
c go / in / let’s!
d favourite / let’s / to / go / my /park!
e nice / upstairs / and / a / there’s café
f idea / that’s / good / a!
g I / much / like / very / it.
‐ Today is Saturday. We haven’t got classes today. ‐ (1) _____________. It’s next to my house. ‐ (2) _____________. ‐ (3) _____________. The park is beautiful. There are a lot of flowers and trees here. ‐ Yes. It’s great! (4) _____________. ‐ Look! (5) _____________. ‐ There is a souvenir shop on the ground floor. (6) _____________. ‐ (7) _____________. We can have a lunch there.