user-avatar
thuhang111
2 năm trước
một con lắc lò xo dao động điều hoà với chu kỳ t trên mặt phẳng ngang khi t=0 quả cầu của con lắc đi qua vị trí cân bằng theo chiều dương gia tốc của quả cầu đạt cực đại lần đầu tiên tại thời điểm
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

EXERCISE 2: Fill in each blank with the correct conjunction: if, so, and, but, or, when. 1. Do more exercise you want to lose weight. 2. I have a lot of homework to do this evening, I don’t have time to watch the football match. 3. Eat more vegetables, you will feel healthier. 4. Take up a new hobby you’ll have some new friends. 5. Eat more fish, you will be smarter. 6. He has toothache he still eats a lot of sweets and cakes. 7. Try to talk less you have a sore throat. 8. Smoke less give it up. 9. Sunbathe less, you’ll get sunburnt. 10. If you spend less time on computer games television programmes, you will have more time for outdoor activities. EXERCISE 3: Combine into one sentence with “too” or “either”. 1. They can play table tennis. We can play table tennis. 1 . They can play table tennis,we can too. 2. He sings love songs very well. His sister sings love songs very well. 2 . He sings love songs very well , his sister does too. 3. I write diary every night. My mother writes diary every night. 3 . I write diary every night , my mother does too. 4. My father doesn’t drink beer. My mother doesn’t drink beer. 4 . My father doesn't drink beer,my mother doesn't either 5. She is swimming in the pool. Her children are swimming in the pool. 5 . She is swimming in the pool , her children are too.

EXERCISE 1: Complete the sentences with the correct form of the verbs in brackets. 1. Sally and her family love (go) to the park in the summer. 2. Her mum likes (lie) on the blanket and loves (read) her favourite magazines. 3. Anna’s family (like) the park because they love (be) outdoors. 4. I enjoy (collect) dolls and it becomes my pleasure. 5. We love (watch) new films, and we (go) to watch a new Hollywood film next weekend. 6. My brother hates (do) the same things day after day. 7. Our uncle (play) badminton once a week. 8. I (collect) a lot of stamps from foreign countries so far. 9. In 2100, people (travel) in flying cars. 10. I’m so hungry, Mum. - I (make) you some sandwiches. 11.The sun always (rise) in the east. 12. In my country, it (not, rain) much in winter. 13. The moon (move) around the earth. 14. Mai (be) very happy because she has 3 good marks today. 15. I like (play) tennis. 16. My brother (enjoy) playing football. He usually (play) football every afternoon. 17. My brothers (be, not) engineers. 18. Well, he is 40 years old, bald with a moustache. He (have) large ears and he (wear) glasses. 19. They (have, not) any money. 20. Hoa (visit) her parents once a year. 21. I (have) dinner when his friend called. 22. Joan (travel) around the world. 23. We (not begin) to study for the test yet. 24. Don’t get on a bus while it (run) . 25. I (invite) them to my birthday party yesterday, however, they (not come) . 26. Look! Somebody (clean) the room. 27. My brother (begin) looking for a job in January. 28. Timson (make) 13 films and I think her latest is the best. 29. She (cook) at the moment. That’s why she can’t answer the phone. 30. She doesn’t mind (go) out in the evening. 31. I (not see) him since we (leave) school. 32. Football (be) my favourite sport. I like (play) it in my free time. 33. Jane (leave) just a few minutes ago. 34. She (be) extremely quiet since her husband died

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team