Một đoạn dây đồng dài 70cm có tieetsdieenj tròn có đừng kín 1,2. tính điện trở của dây

Bài 1: Trung hòa 200 g dung dịch H,SO, 9,8% bằng dung dịch KOH 5,6%. a) Tính khối lượng dung dịch KOH 5,6% đã dùng. b) Tính nồng độ % dung dịch muối tạo thành sau phản ứng.

Ai giúp em với huhu , em lú quá huhu , cần giúp ajaaaa

nhanhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Cho tam giác ABC . Kẻ đường cao BE , AF cắt nhau tại H . Gọi M đối xứng H qua AB. a) Chứng minh tam giác ABH = tam giác ABM b) Cho C = 70 . Tính góc AMB (giúp em với ) ( em het điểm rồi )

kể về một lần mắc lỗi với cô giáo

giúp mình nhanh minh sắp hết thời gian

Calli "minhthutrandtm" - Gòy xoq :>

TIẾNG ANH Bài1: Chuyển Đổi Các câu sau thành câu gián tiếp. 1-''I must go home to make the dinner'',said mary. 2-''Are You Going to ho chi minh city next week?'' Tom asked me. 3-''have you finished your home work? Mom asked.

1. "Don't try this at home," the stuntman told the audience. .................................. 2. "Leave your keys on the desk, please," he told me. ........................................... 3. "Don't spend too much money on your holiday." She said to me. ......................... 4. "Could you tell me where the post office is?" he said to me........ 5. "Peter, do you prefer tea or coffee?" she said. .................................................................................................................... 6. "I will get myself a drink," she said. .................................................................................................................... 7. Betty said, "I forgot to give you my address." .................................................................................................................... 8. His mother to him: “Study harder because this is your last chance.” .................................................................................................................... 9. Dave: “I am going to watch Shakespeare’s Twelfth Night with my family tomorrow.” .................................................................................................................... 10. “Did you leave before my brother?,” she said to him. .................................................................................................................... 11. “Jean, have you seen my gloves?” Thomas asked. .................................................................................................................... 12. “What are you going to do next summer?” she asked. .................................................................................................................... 13. Can I sit beside you, Jean?” Tom asked............. 14. “How long are you going to stay?” I asked him. .................................................................................................................... 15. “ Did Mr Brown send the potatoes to you?” she asked. .................................................................................................................... 16. “Don’t get your shoes dirty, boys.” she said. .................................................................................................................... 17. “What do you want for lunch today, Peter?” Mary asked. .................................................................................................................... 18. “Why didn’t I get a computer before?” thought the office manager. .................................................................................................................... 19. “When was your little boy born?” said the nurse to Mrs. Bingley. .................................................................................................................... 20. “I’m sorry I gave you the wrong number.” said Paul to Susan. .................................................................................................................... 21. “Don’t leave the house until I get back, William.”, his mother said. .................................................................................................................... 22. “Have you had enough for lunch?” the landlady asked us. .................................................................................................................... 23. “ John, please don’t tell anyone my new address.” said Mary. .................................................................................................................... 24. “Why didn’t you report the incident to the police?” the officer asked the frightened witness. .................................................................................................................... 25. “Don’t forget to bring your passport with you tomorrow.” .................................................................................................................... 26. "Mind your own business," she told him. .................................................................................................................... 27. “I have just received a postcard from my aunt,”my best friend said to me.......................................................................................... 28. “Do your sister and brother go to the same school?” Nam asked his friend. .................................................................................................................... 29. Mr. Green said to his secretary: “Who did you talk to a few minutes ago?” ...................................... 30. She asked her son: “Do you know which is the cup you used ?” ............................. 31. “I was waiting for the bus when he arrived” ............................................................. 32. “I hadn’t travelled by underground before I came to London” .................................