Dùng mặt phẳng nghiêng dài 8m để kéo vật có khối lượng 49,2kg lên cao 2m. a) tính công kéo vật có khối lượng theo mặt phẳng nghiêng khi không có ma sát b) tính lực kéo vật lên theo mặt phẳng khi không có ma sát c) thực tế có ma sát lực kéo vật là F=150N.Tính hiệu suất của mặt phẳng nghiêng

nếu bán kính hình tròn tăng thêm 50% thì diện tích hình tròn tăng bao nhiêu %? ai trình bày bài tốt,hay mình vote 5 sao và làm bài hay nhất+cám ơn nhớ là trình bày nhé!

giúp mk đề này với.mk hứa sẽ vote 5 sao và cảm ơn đàng hoàng nha

hãy vẽ giùm một con mèo thiệt đẹp ko chép mạng

41. Her parents don’t let her _______ (go) out at night. 42. The film made her________ (cry) a lot. 43. I love ____________( travel) a lot. 44. She‘d love_______________ ( live ) in the countryside. 45. He likes _______________( jog) . 46. I’d like _____________( say ) goodbye to you. 47. Do you like _______________( cook ) ? 48. She is not allowed_______________ ( use ) his car. 49. We are made ______________(work ) harder. 50. We are fond of______________( learn ) English. F. WORD FORM EXERCISES. Write the correct form of words in brackets. 1. My _________________writer is To Hoai. (favor) 2. Her brother is a stamp___________.(collect) 3. I have a valuable stamp _______________.(collect) 4. For many people, it is a form of exercise and an _______________ leisure activity.(enjoy) 5. Hoi An ancient city is a _______________ tourist attraction.(fame) 6. He took a lot of ______________ photos.( beauty) 7. My brother doesn’t like ice-skating because he thinks it is___________(danger). 8. My sister is very keen on ____________(swim). 9. We often read the instructions _____________(care). 10. Playing table-tennis is very ____________________(interest) 11. The doctor gave us some advice for a _____________ lifestyle(health). 12. We do this to help to save ___________ resources.(nature) 13. The members of the club gave blankets for poor children in _______areas last year.(mountain) 14. Doing volunteer work can make you feel more __________(confidence). 15. Stay outdoors more and do more __________ exercises.(physics). 16. I think you should take jogging because it is very _________ for your health.(use) 17. My aunt often donates money to ___________organizations to help street children.( charity) 18. It’s his pleasure to become a __________(music). 19. He usually plays ______________ music in his leisure time.(tradition) 20. For many people, a good ______ of music and arts is regarded as a necessity for every student.(know) 21. _________________, Vietnamese meals are prepared by wives or mothers.(tradition) 22. Young people in Viet Nam now like fast food because of its _______________(convenient) 23. What is the most ________________ Vietnamese fast food chain? (success) 24. There is an _________________match between Vietnam and Thailand on VTV3. (nation) 25. The Internet is one of the most important ________________ of our life.(invent)

giúp em câu 4 ở bài 3 vssssssssssssssssssss em cần gấp

Tính tổng Giúp mik nha mik đang cần gấp

ai nhanh mk cho câu trả lời hay nhất nha đây là thì quá khứ đơn

x^4-6x^2-7x-6 phân tích thành nhân tử

Giúp e vớigqhqjqbqhqjqj1hb1b1b11