So sánh ưu nhược điểm của dây dẫn điện và dây cáp điện

Một quả táo cân 250g.mỗi quả dứa cân nặng gấp 6 lần quat táo .hỏi 2 quả dứa như thế cân nặng bn kg

Một vật được thả rơi không vận tốc đầu khi vừa chạm đất có v = 70m/s, g =10 m/s^2. a) Xác định quãng đường rơi của vật b) Tính thời gian rơi của vật

Mik cần gấp làm ơn giúp mik nhanh vs

8. My brother (does/ is/ will) very naughty. 9. (What/When//Where) is his birthday? 10. These are their books and those are 1. Thurday is. .day of the week. (five / the five / fifth/the fifth) 2. What...awful weather ! I can't go out. (a/ an the /0) 3. My father isn't 4. Don't work to much. You...now. (are relaxing/can relax/should relax /will relax) 5. Farmers have. .time off than workers do. (little /less/fewer/ more) 6. Would you like to go out for a picnic with us ......? (Yes,I would /Yes,I will/Yes, I would love to /Yes, I want to go) 7. Nga has....uncle in Ha Noi. He's a dentist. He often wears.. uniform to work. (a-a/ an-a/a-an/ an-an) 8. Students have two...break each day. (twenty minutes / twenty minute/twenty-minute/twentieth-minute) 9. There is a restaurant..the supermarket. (on the left/ on the left of/ to the left/ to the left of) 0. I sent a letter to my pen pal-Tim . .month. (every /last / next/cach) 11. Children are often scared...seeing the dentist. (of / in/ at/ about) 12. John is not Vietnamese but he often travels to VietNam. He is a ... (we/ our/ ours) sporty. He ...plays sports. (never/sometimes/ often/ always) (teacher/ mechanic / artist/tourist) 1. My parents A. led 2. I'm sure they were A. telling 3. I'd like to mail this letter A. for 4. I am A. pleasant 5.-What is the tall building over there? - A. Yes, it is tall B. No, it is not tall 6. We A. transferred B. got 7. I know how to take care A. for me to see Ho Chi Minh's Mausoleum last summer. B. took C. brought D. directed lies. C. doing my friend in the USA. C. to B. making D. saying B. with D. up to that you and your family are well. B. pleasing C. pleased D. with pleasure C. Yes, it is the new library D. It's a new library to our new house on January 1". C. removed myself. C. about tooth decay D. moved В. of D. with 8. Fluoride toothpaste helps. A. prevent 9. Wear your hat. It will A. protect 10. She added a little salt to the soup so it tasted A. deliciously B. well 1. Mai is... 2.0f all the students I my class, Nam is... 3.. B. for preventing your head. C. preventing D. with preventing B. defend C. secure D. guarantee. C. good D. tastefully ..than Hoa. ( intelligent/ more intelligent/ most intelligent) (tallest/ the tallest/ taller) ..beautiful the flowers are ! ( What/ very/ how) beautiful gardens ! ( What/ very/how) 4.... 5.What.....you doing now?-I am washing my clothes. ( are/ do/ were) 6.Do think he is.... .in the laboratory at the moment? (work/ worked/ working) you 7.. .you like to go to the cinema with me?-I'd love to. (do/ shall/ wwould) ...camping? (went/ going/ go) .to see the teacher (to go/ going/ go) .is it from here to your school?-2kilometers. (far/ long/ much) ..does the T.V.cost? (far/ long/ much) 8.How about... 9.Let's.. 10.How.. 11. How... 12. Can you tell me the way............. 13. ..the post office, please? (to/ about/ much) ..straight ahead and turn left (Run/ go/ come) 14. Are you afraid.. snakes? (about/ at / of) 15. He's interested.. 1. Please A. see .......animals. (in/ on/ about) the milk carefully. I don't want it to boil over. C. look at B. watch D. notice

viết mỗi tập hợp sau bằng cách chỉ rõ tính chất đặc trưng cho các phần tử của nó N= {3,4,7,12,19,28,39,52} O= {0, $\sqrt{3}$, 2$\sqrt{2}$, $\sqrt{15}$, 2$\sqrt{6}$, $\sqrt{35}$, 4$\sqrt{3}$, $\sqrt{63}$}

Hãy cho ví dụ về biến đổi chuyển động , đặt 1 câu

2xy(x^2-3x+4y) làm từng bước giúp mik nha (Ko làm tắt)

từ các văn bản nhật dụng đã học con đã hiểu hơn về cha mẹ, về thầy cô, về gia đình, về nhà trường. Con hãy viết 1 bức thư gửi 1 cô giáo cũ để bày tỏ suy nghĩ của con về vai trò của nhà trường vs bản thân con trong suốt những năm qua và cả sau này Kh chép mạng Viết chân thực ạ Em cảm ơn ạ

9 sin ^2 2x - 6 sin 2x+1=0 cot^2 3x+ 3 cot 3x+2+=0 cos4x+7cos2x- 3=0 cos2x+2cosx= 2sin^2 x/2