Предмет: Физика, автор: INDIANkot

Знайти довжину стержня Lо у космічному кораблі, який рухається із швидкістю V = 0,5с, якщо довжина стержня відносно нерухомої системи відліку L – 10 см.

Ответы

Автор ответа: lvv9136
2

Ответ:

8,66 см.

Объяснение:

Приложения:

INDIANkot: L уже известна, надо узнать Lo.
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1 'I ...A... about buying a new car recently.'

'Really? What sort of car?'

A have been thinking

B have thought

C thought

2 'I haven't seen Mark for weeks.'

'Well, I … him this afternoon. Why don't you come along?'

A have met

B am meeting

C meet

3 'We'd better take a taxi to the station.'

'Yes. The train … in fifteen minutes.'

A has left

B will have left

C leaves

4 'Where is the newspaper?'

'I threw it away. I thought you … reading it.'

A have finished

B finished

C had finished

5 ‘I feel very tirgd,'

'How can you be tired? You … a thing all day.'

A haven't been doing

B aren't doing

C haven't done

6 'Cathy doesn't study enough.'

'I know. I'm afraid she … her exam.'

A won't pass

B won't be passing

C won't have passed

7 'It's bad news about Janet crashing her new car, isn't it?'

'Yes. She … for months to buy it.'

A saved

B is saving

C had been saving

8 There's someone here to see you.'

'Oh, that … my sister. Send her in.'

A will have been

B was

C will be

9 'Whose is this earring?'

'I don't know. I found it when I … the house.'

A was cleaning

B had cleaned

C am cleaning

10 'I … to reach Jane on the phone all day.'

'Don't you know? She's gone on holiday.'

A tried

B have been trying

C have tried

11 'I want to visit Katie.'

'Well, don't visit her before five o'clock. She … .'

A is working

B will be working

C will have worked

12 That … like Dad's car.'

'It is. He must have finished work early.'

A sounds

B had sounded

C has sounded

13 'Is that a new jumper?'

'No. I … it from Laura yesterday.'

A have borrowed

B had borrowed

C borrowed

14 ' … to the library today?'

'Yes. Would you like me to return your books?'

A Will you have gone

B Will you have been going

C Will you be going

15 'How is your grandfather?'

'His condition … day by day.'

A improves

B has improved

C is improving

16 'When did you speak to Sue?'

'I met her as I … to work.'

A had walked

B was walking

C am walking

17 'Shall we go shopping?'

'I can't go until the babysitter … '

A arrives

B will arrive

C arrived

18 'I've invited Sam to my party.'

'I doubt if he … . He's studying for an exam.'

A comes

B will come

C is coming

19 'I'm sorry I'm late.'

'I … here for over an hour.'

A have been waiting

B have waited

C was waiting

20 'I'm having trouble with the car.'

'I'm sure John … you fix it if you ask him.'

A is going to help

B helps

C will help

21 'How long … James?'

'Since we were children.'

A have you known

B do you know

C did you know

22 'You … a good teacher one day.'

'Do you really think so?'

A were

B will be

C are being

Пожалуйста решите. Мне надо это срочно!!!