Предмет: Физика, автор: kristino0830

ПОМОГИТЕ ПОЖАЛУЙСТА :((
какое соотношение силы тяжести и силы архимеда должны быть что бы аэростат взлетел?

Ответы

Автор ответа: alexminaev
0

Ответ:

Для взлета аэростата сила Архимеда должна быть больше или равна силе тяжести.

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G R A M M A R

1Complete the sentences. Use the verbs in brackets in the past simple or the past continuous.

Example: I saw (see) James yesterday.

1 It _________ (rain) when we got to the beach. 2 I met Paul when I _________ (walk) the dog.

3 She _________ (not go) to the cinema with us last week.

4 _________ Ben _________ (wear) his new jeans when you saw him?

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6 I _________ (not watch) TV when you rang, I was in the shower.

7 _________ you _________ (drive) to France last summer?

8What _________ you _________ (do) at eight o’clock last night?

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2Complete the dialogue.

Freddie Wheredid yougo (you go) last year?

Mike I went to Japan.

Freddie Fantastic! When1 _________ (you go)?

Mike In the summer.

Freddie Who2 _________ (you go) with?

Mike I went with Sam, but we had a few problems.

Freddie What3 _________ (happen)?

Mike We lost our passports.

Freddie Really? What4 _________ (you do)?

Mike We went to the police station.

Freddie What5 _________ (they say)?

Mike Well – the passports were there!

Freddie That was lucky! Who6 _________ (find) them?

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3Complete the sentences with so,because,but, oralthough.

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3 Tom couldn’t do the exam, _________ it wasn’t difficult.

4 It was raining, _________ I took my umbrella.

5 I’m learning Italian _________ I’ve got a penfriend in Rome.

6They won the lottery _________ they’re going to buy a new house.

6

Grammar total





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V O C A B U L A R Y

4Underline the correct verb.

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2 stay /meet /rent an apartment

3 do/ take/ spendphotos

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5 take /have /spend a good time

6 see /spend /walk around the town

7 rent/ hire/ goby car

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