Thế năng mà một electron gây ra tại vị trí cách nó 1 cm có độ lớn là bao nhieu?

Làm câu nào thì làm nhá:<<< Cho (O,R) có AB là đường kính của (O,R). Kẻ d1 và d2 lần lượt là tiếp tuyến (O,R) tại A và B. Lấy C trên (O,R) sao cho C khác A,B. Kẻ d3 là tiếp tuyến (O,R) tại C, d3 cắt d1 tại D và cắt d2 tại E 1) DE=AD+BE 2) góc DOE = góc ACB với mọi vị trí của C thuộc (O,R) 3) AB là tiếp tuyến của đg tròn ngoại tiếp

vẽ mầm cười đi,full màu,ko vẽ app,xấu bc. NL:Nhóm lazy warrios hơi khắt khe đó.

Sự phân hóa các ành đai nhiệt trên trái đất phụ thuộc chủ yếu vào nhân tố nào?

Bài5 câu 8,12,13 ạ Nhanh hộ mk Thank!!!!💖

1. You shouldn’t let your children_______ (play) with matches. It’s very easy_______ (catch) fire. 2. I enjoy______ (be) busy. I don’t like it when there is nothing_____ (do) 3. Let’s hurry! We must finish_______ (paint) the office before 3:00 today. 4. As we don’t agree _______ (carry out) a proposal we generally avoid _______ (discuss) the subject. 5. I don’t mind_______ (remind) you _______ (lock) the door but you’d better _______ (try) _______ (remember) on your own. 6. Please stop_______ (interrupt) when I’m explaining something to you. You can_______ (ask) questions at the end. 7. He admitted_______ (enter) the house but refused (steal) the money. 8. I don’t really fancy_______ (spend) my whole holiday with your cousins. I’d rather _______ (spend) my time with you. 9. We had hoped_______ (finish) the project by the end of the month but we keep_______ (delay) by changes in the plans. 10. You’d better_______ (go) and see the boss and say what you've done. If you put off_______ (explain) it to her, she’ll only more annoyed. 11. No that’s not what I meant______ (say). How can I make you _______ (understand)? 12. Those shirts need_______ (iron),but you don’t need _______ (iron) them now. 13. Are we permitted_______ (bring) guests to the ceremony? I’d like _______ (invite) my friend to join us. 14. Children shouldn't be allowed_______ (catch) violent programs on TV. Parents should encourage their children_______ (watch) educational programs. 15. It’s no use _______ (try) ______ (persuade) her _______ (change) her mind. Spend your time _______ (do) something more worthwhile. giúp em giải thích nữa ạ

Helppppp Từ quặng photphorit (Ca3(PO4)2) , pirit sắt (FeS2), nước, các điều kiện cần thiết và xúc tác có đủ. Viết các phương trình phản ứng ( ghi rõ điều kiện ) để điều chế supephotphat đơn, supephotphat kép, sắt (II) sunfua.

Vẽ avatar gia đình Chú ý : [+] Vẽ bằng app hay vẽ tay cũng được [+] Vẽ đẹp = HN

chứng minh câu nói: Dân ta có một lòng nồng nàn yêu nước. đó là truyền thống quý báu của dân tộc ta.

Hộ nhanh nhaaaaa sắp nộp áaaa Exercise 2: Rewrite the following sentences without changing their original meaning. Viết lại các câu sau 1. You don’t like this one. I will bring you another. ----> If................................................................................................... 2. I will help you . You promise to try harder. ----> If.................................................................................................... 3. She doesn’t work harder. She will lose her job. ----> If..................................................................................................... 4. You will be able to use my car . You keep it carefully. ----> If............................................................................................. 5. The work is finished by lunch . You will be able to go home. ----> If......................................................................................................... 6. She apologises to me . I’ll speak to her again. ----> I’ll......................................................................................................... 7. I’ll call the police . You leave me alone. ----> If...................................................................................................... 8.You press this button . We will stop the machine. ----> If.............................................................................................................. 9. You make me some coffee. I’ll give you one of my biscuits. ----> If.............................................................................................................. 10. You tell me about Sue’s hair, I will notice. ----> If...................................................................................................... 11. If we don’t listen to very soft music, we will have earache. => Unless…………………………………………………………………………………. 12. If you don’t brush your teeth every day, you will have toothache => Unless you …………………………………………………………………………………. 13. If there is not better cure, the teacher will have a sore throat => Unless…………………………………………………………………………………. 14. We will feel sick unless we do exercise regularly. => If we…………………………………………………………………………………… 15. The class will not be very noisy unless he keeps sneezing and coughing. => If he…………………………………………………………………………………… 16. If you don’t study very hard, you will be bad at English next term. => Unless you………………………………………………………………………….. 17.. If you drink more water every day, you will not be tired. => Unless…………………………………………………………………………………. 18. If you don’t throw rubbish onto the water, water will not be polluted. => Unless…………………………………………………………………………………. 19. If you don’t go out at rush hour, you will not get into traffic jams =>Unless………………………………………………………………………………… 20. Unless we keep the environment clean, we will not live long. => If we …………………………………………………………………………