Hai điện tích giống nhau đặt trong chân không cách nhau 4cm thì đẩy nhau bằng một lực 10 -5 N. Độ lớn của mổi điện tích là:

hai nam châm có hút nhau không và hút nhau ở đầu nào

lão nói xong lại cười đưa đà......nó thế này ông giáo ạ! Trong đoạn trích trên lão Hạc muốn nhờ ông giáo việc gì? Việc đó giúp em hiểu gì về nhân vật này?

Chứng minh tế bào là đơn vị chức năng của cơ thể

VII. WORD FORM 1. Please fill in this form with your __________________ information. (people) 2. You can get some useful contacts from a trade __________________. (direct) 3. At the moment we have very little __________________ to go on. (inform) 4. Don’t be ____________! (lateness) 5. Can I __________ to Vin, please? (speech) 6. I am pleased to _________________ you that you have won first prize in this month’s competition. (information) 7. What’s the date today? – April the ___________. (one) 8. When’s your _____________? (birth) 9. I always feel _____________ when seeing a dentist. (nerve) 10. Are you ______________ about something? (worry) 11. Alex is writing some __________________ cards to her party. (invite) 12. I hope you will come and join the ________________. (funny) 13. I _________________ some of my friends for my party next Saturday. (invitation) 14. I am _______________ because I miss my old friends. (happiness) 15. This book is ___________________ than that one. (beauty) 16. What’s her _______________? – She’s ten. (old) 17. Anna is very _______________, everyone loves her. (friend) 18. Don’t _______________, I’m certain that you’ll have a lot of friends soon. (worried) 19. Will you be _______________ tonight? (freedom) 20. We go swimming ______________ a week. (first) VIII. Rewrite the sentences without changing their meaning 1. Her new school is bigger than her old school. Her old school is smaller than her new school. Her old school is not as big as her new school. 2. Hoa is not happy. Hoa is _______________________________ 3. How old are you ?  What _______________________________ 4. Where does she live ?  What________________________________ 5. What’s the distance between HCM City and Dalat ? How _______________________________________ 6. I am going to visit Pearl Harbor next week.  I ___________________________________ 7. Be on time!  Don’t _______________________________ 8. Sorry, Lan is out at the moment.  Sorry, Lan is _______________________________ 9. What’s your date of birth?  When _______________________________ 10. What’s your mother’s date of birth?  When_______________________________ 11. The party will start at 5 p.m. and finish at 9 p.m.  The party will _______________________________ 12. The meeting will begin at 7 a.m. and end at 12 p.m.  The meeting will _______________________________ 13. What’s Tom’s address?  Where ______________________________________ 14. Who lives with Meg? Who(m) _____________________________________? 15. What’s your phone number?  Can ________________________________________ 16. I don’t have any friends.  I have _______________________________________ 17. How far is it from your house to the market?  What __________________________________________ 18. There are forty students in my class.  My ____________________________________________ 19. Where were you born?  Where’s ________________________________________ 20. This tree is taller than that one.  That tree _____________________________________  That tree _____________________________________

Một học sinh đi từ nhà đến trường,khởi hành từ nhà lúc 6h20min và đến trường lúc 6h40min.Chiều dài quãng đường là 1,8km.Tính tốc độ trung bình của học sinh từ nhà đến trường ra km/h,m/s

Xếp chữ làm sao thành một từ triwer 》.....

Help me(áp dụng các tính chất của tam giác đều)

ask her to come and see me when she (finish).....her work đáp án và giải thích

EX1: Cho dạng đúng của động từ ở dạng quá khứ (V2) và quá khứ phân từ (V3), dùng bảng động từ bất quy tắc nếu cần. EX2: Viết các câu sau ở thể khẳng định (+), thể phủ định (-), thể nghi vấn (?) ở thì quá khứ đơn. 1. (+) They decided to leave soon. (-) ________________________________________________________________. (?) ________________________________________________________________? 2. (+) ________________________________________________________________. (-) There were not many homeless people here ten years ago. (?) ________________________________________________________________? 3. (+) ________________________________________________________________. (-) _________________________________________________________________. (?) Did Tom’s grandfather use to be a soldier? 4. (+) My teacher started teaching here 6 years ago. (-)_________________________________________________________________. (?) _________________________________________________________________? 5. (+) Jane often went to school on foot 3 years ago. (-) _________________________________________________________________. (?) _________________________________________________________________? 6. (+) _________________________________________________________________. (-) The cat didn’t want to eat yesterday. (?) _________________________________________________________________? 7. (+) _________________________________________________________________. (-) __________________________________________________________________. (?) Did the train arrive late yesterday? 8. (+) _________________________________________________________________. (-) There wasn’t anything left in the fridge. (?) _________________________________________________________________?