6. Ученик провел эксперимент по определению скорости поверхностной
волны. В ванночку с водой бросили
грузик с одного края. Время, за
которое волна в ванночке достигла
противоположного края 4,5 секунды.
Длины ванночки 35 см. при этом
ученик подсчитал четыре всплеска за
одну секунду.
1. Определите скорость
распространения поверхностной
волны.
2. Определите период волны
3. Определите длину

Ответы

Ответ дал: Гость

dog, cat, rabbit, frog, hen.

Ответ дал: Гость

1. why are you laughing? – he has told us a funny story. 2. i have not seen this film. i will go to see it this week. 3. my friends are waiting for me now. i have not seen them for ages. 4. he had learnt new words for 3 hours yesterday. 5. it was raining when i got up. 6. i was taking shower when you called me. 7. she believes she'll have become famous by the time she’s thirty. 8. they'll have finish their meeting by 4 o’clock this afternoon. 9. i'll have cleaned the room by the time you come back. 10. he listened to with great attention. 11. trees are being planted in the garden now. 12. all the food had been eaten by the time i got there. 13. the project had been finished by wednesday afternoon. 14. a new bicycle was given to bill by his father. 15. the house is being built now.

поставь мне "лучшее решение", если тебе понравилось мое решение.

Ответ дал: Гость

Have you watered the flowers yet? (water/already/yet)1. we have just washed off graffiti from all the houses in our street. 2. my dad is happy. i have helped to rake the leaves in the garden.3. i have got five excellent marks at school today.4. i can go to the cinema now. i have already learnt the poem.5. my brother has been playing tennis since 2 o’clock.6. i have been playing the violin for two hours.

Ответ дал: Гость

there are many reasons why everyone should learn a foreign language.

firstly, learning a language of another country helps one understand its culture. language becomes a peephole to look at the nation’s culture, its traditions and its history. italian film director federico fellini says, "a different language is a different vision of life".

research has shown that having studied a foreign language one can understand one’s own language better. it deepens the understanding of one’s own culture. general language skills improve after studying foreign languages.

another thing that talks of the importance of foreign language study is touring to foreign countries.

eventually, knowing a foreign language opens new job and employment opportunities in many countries and markets and it's grate!