user-avatar
khanhlytran2801
2 năm trước
Giúp em với ạ, em vơt 5 sao , cảm ơn ạ. . Một con lắc gồm quả nặng có khối lượng 200 g gắn vào một lò xo. Con lắc dao động 50 chu kì hết mất 15,7 s. Độ cứng k của lò xo là ? . Vote trả lời hay nhất thì em hiểu em mới vote ạ, em xin cảm ơn mọi người.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

VIII. Add a question-tag to these sentences 1. He is late this morning, _______________________? 2. The hotel was quite good, ________________________? 3. She cooks well, _______________________? 4. You can’t tell the difference, _________________________? 5. They always sleep after lunch, __________________________? 6. You’re coming with us, _______________________? 7. Mary plays football, ________________________? 8. You didn’t have any lessons this morning, _______________________? 9. Ann is on holiday, ______________________? 10. The students see it everyday, ________________________? 11. Mr Priestley doesn’t know your father, ______________________? 12. There are lots of cars here, ______________________? 13. I am not disturbing you, _____________________? 14. Tom does his work very well, ________________________? 15. This isn’t very pleasant, _____________________? 16. She likes quiet places, ______________________? 17. Tom doesn’t play the piano, _______________________? 18. They didn’t hurt the child, _______________________? 19. There were two car accidents yesterday, _______________________? 20. Tourists used to come here, ________________________? 21. You haven’t got a computer, ________________________? 22. You don’t have to follow him, ________________________? 23. He has to fill a form, ________________________? 24. He didn’t have to choose one, _______________________? 25. He has your ticket, _______________________? 26. Everything is all right, _______________________? 27. He has got to leave, ______________________? 28. Smoking ruins our health, ________________________? 29. Most people cannot go to Africa, ________________________? 30. Finding a job isn’t easy, _______________________?

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