Đường dây tải điện dài 100km, truyền đi một dòng điện có công suất 6MW và hiệu điện thế truyền tải là 10kV. Dây bằng đồng, cứ đi 1km là 3 ôm, tính công suất hao phí trên đường dây?
Alex: "John has found a new girl friend" Ian: ..... A. So has he B. Oh, so he has C. Well, so does he D. He has so (Giai thich vi sao gium nhe)
a) Tính tổng sau S= 2+(-3)+4+(-5)+....+2008+(-2009)+2010+(-2011)+2012 Mình đang cần gấp
xác định a,b',c trong mỗi phương trình rồi giải bằng công thức nghiệm thu gọn a. 5x2-6x-1=0 b. -3x2+14x-8=0 c. -7x2+4x=3 d. 9x2+6x+1=0
Giải nhanh giúp em vs ạ bài khó quá
Ex 2: Rewrite the sentences using relatives clauses. 1.He was sitting on a chair. It was uncomfortable. …………………………………………………………. 2.The pub is opposite the Town Hall. I first met my wife there. …………………………………………………………. 3.Do you know that lady? I repaired her car. ………………………………………………………… 5.A man stole £10,000 from a bank. The police have caught him. …………………………………………………………. 6.Romeo and Juliet were lovers. Their parents hated each other. @…………………………………………………………. 7.This is the story of a man. His wife suddenly loses her memory. @…………………………………………………………. 8.A man brought in a small girl. Her hand had been cut by flying glass. @…………………………………………………………. 9.There’s the lady. Her dog was killed. @………………………………………………………… 10.He’s the person. His car was stolen. @…………………………………………………………. 11.The river is the Sai Gon River. It flows through Ho Chi Minh City. @…………………………………………………………. 12.Mr Phong hasn’t come yet. He is supposed to be at the meeting. @…………………………………………………………. 13.Our solar system is in a galaxy. The galaxy is called the Milky Way. @…………………………………………………………. 14.I come from a city. This city is located in the southern part of the country. @…………………………………………………………. 15.I’ve recently gone back to the town. I was born in the town. …………………………………………………………. 16.Do you know the name of the hotel ? John is staying at the hotel. …………………………………………………………. 17.We enjoy this city. It has been renewed a lot after the war. …………………………………………………………. 18.The movie was interesting. We went to it. …………………………………………………………. 19.I couldn’t understand the woman. I talked to her on the phone. …………………………………………………………. 20.I want to tell you about the party. I went to it last night. …………………………………………………………. 21.The music was gentle. We listened to it last night. …………………………………………………………. 22.Alice likes the foreign family. She is living with them. …………………………………………………………. 23.The man is over there. I told you about him. …………………………………………………………. 24.The film is fantastic. They are talking about it. …………………………………………………………. 25.She’s the nurse. We gave the flowers to her. …………………………………………………………. 26.We are speaking to the man. The man was our new history teacher. ………………………………………………………….v 27.The teacher is Mr. Pike. We studied with him last year. …………………………………………………………. 28.Neil Armstrong was the first man who walked on the moon …………………………………………………………. 29.I come from a city that is located in the southern part of the country. …………………………………………………………. 30.The children who attend that school receive a good education. …………………………………………………………. 31.The scientists who are researching the causes of cancer are making progress. …………………………………………………………. 32.They live in a house that was built in …………………………………………………………. 33.We have an apartment which overlooks the park. …………………………………………………………. 34.Yuri Gagarin became the first man who flied into space. …………………………………………………………. 35.We stood on the bridge which connects the two halves of the building. …………………………………………………………. 36.I come from a city which is located in the southern part of the country …………………………………………………………. 37.There are some words. They are very difficult to translate. …………………………………………………………. 38.What is the name of the man ? You borrowed his car. …………………………………………………………. 39.This watch costs a lot of money. I have lost the watch. …………………………………………………………. 40.We were given a lot of information. Most of the information was useless. ………………………………………………………….
Bài 2/ Để điều chế khí oxi người ta đun nóng 24,5g KClO3 a. Viết phương trình hóa học xảy ra. b. Tính thể tích khí oxi thu được ở đktc. c. Tính khối lượng KCl tạo thành. Bài 3/ Để điều chế 4,48 lít khí oxi ở đktc người ta nung nóng KMnO4. a. Viết phương trình phản ứng xảy ra. b. Tính khối lượng KMnO4 cần dùng
Ai giải dùm mình part 3 4 đi ạ mình cảm ơn nhiêu Hứ sẽ vote 5*
gấp mai mk nộp r...........................
Đốt cháy hoàn toàn 16,25 gam kim loại A ( có hóa trị n) trong bình đựng khí Cl2 dư thì sinh ra 34 gam muối clorua. Tìm công thức của A Giúp mình với ạ <3
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