Một ô tô khối lượng 4 tấn chuyển động với vận tốc không đổi 54 km/h. Động năng của ô tô tải bằng

Giúp em mọi người oi mai nộp bài rồi mà bây giờ em vẫn chưa làm được :((

giải thích tại sao đá trầm tích có tính xốp

tinh thần yêu nước của nhân dân ta từ cách lập luận của tác giả làm nổi bật vấn đề gì

rut gon bieu thuc A=(1 phan can x+2 +1 phan can x-2) chia can x+2 phan can x giup minh voi

I. Choose the best option for each WITH A SUITABLE RELATIVE PRONOUN: 1. Chinese people have a very special kind of soup……… is made from shark’s fin. A. which B. who C. whose D. whom 2. I’ll stay with Adrian…………. brother is one of my closet friends. A .that B. who C. whose D. whom 3. 1890 is the year …………Uncle Ho was born . A. who B. whom C. which D. when 4. The lion- tamer and his lion ..................... we saw on the stage came from Moscow. A. who B. which C. that D. when 5. We are going to visit Ha Long Bay ............ is one of the most interesting places of the North in Vietnam. A. who B. which C. where D. when 6. A lot of fish ……… live in the polluted sea died everyday A. which B. who C. when D. whom 7. Neil Amstrong , ................... was the first man walking on the moon is an American. A. who B. which C. whom D. why 8. The car ..........he has just bought is very expensive . A .who B. whom C. which D. whose 9. Do you know the man ………….you met yesterday? A who B. which C. whom D. Whose 10.Wu Han .............many Chinese people are died of virus NCOVI is a big industrial city of China . A. which B .where C. whom D. whose II. Choose the best option for each question: 11. If it rains this evening, I ……………………. out. A. not go B. don’t go C. didn’t go D. won’t go 12.Lan ………………..the bus if she isn’t hurry. A. miss B . misses C.will miss D. would miss 13.Tom isn't at home right now. If he ( be )…. at home, I ( visit )…… him. A. is/ visit B. were/would visit C. is/ visited D. was/ visited 14. What ……you…….tomorrow if you saw a UFO? A. will/do B. would/ do C. do/do D.did/do 15.If/ I/be/you/I/ not/do/that. A. If I were you ,I wouldn’t do that. B.If I were you ,I won’t do that. C If I were you ,I don’t do that. D.If I were you ,I do that. 16. If/ she/meet/me/I/tell/her/the/truth. A. If she meet me, I tell her the truth. B. If she meets me, I will tell her the truth. C If she met me, I tell her the truth. D. If she meets me, I would tell her the truth. 17. She has a friend. Her friend is the manager of this company. A. She has a friend whose is the manager of this company. B. She has a friend whom is the manager of this company. C.She has a friend which is the manager of this company. D. She has a friend who is the manager of this company. 18. The village is very peaceful. I lived in this village when I was a child. A. The village which I lived when I was a child is very peaceful. B. The village when I lived in when I was a child is very peaceful. C. The village that I lived when I was a child is very peaceful. D. The village where I lived when I was a child is very peaceful. 19. The school is very nice.We learn at it A. The school we learn is very nice. B. The school at which we learn is very nice. C. The school that we learn is very nice. D. The school that we learn is very nice. 20. I want to go out but it is raining now. A. If it weren’t raining now, I would go out. B. If it isn’t raining now, I would go out. C. If it isn’t raining now, I will go out. D. If it weren’t raining now, I will go out.

giải giúp em bài 42 nhé các anh

một vật có khối lượng m=2kg đang nằm yên trên mộ mặt phẳng nằm ngang không ma sát . dưới tác dụng của lực nằm ngang 5n vật chuyển động và đi được 10m. tính vận tốc của vật ở cuối chuyển dời

Cho góc xOy, trên tia Ox lấy điểm M, N (M nằm giữa O và N), Trên tia Oy lấy điểm P,Q( P nằm giữa O và Q) sao cho góc ONP = góc OQM. a) Chứng minh ∆ONP đồng dạng với ∆OQM b) Chứng minh OM.ON = OP.OQ c) Gọi I là giao điểm của PN và MQ. Chứng minh IM.IQ = IN.IP

Giúp e ạ e sẽ vote và đánh giá tốt ❤️🥺🥺🥺🥺