xe ô tô đang chuyển động thẳng đều có 2 lực ,lực kéo F1 và ma sát F2 cùng TD vào ô tô theo phương nằm ngang .thì F1 và F2 là lực như thế nào ? xác định yếu tố 2 lực biết F kéo =5000N .

CÂU 1. VAI TRÒ CỦA ĐẤT TRỒNG CÂU 2. NÊU NHỮNG ĐẶC ĐIỂM CỦA NHỮNG THÀNH PHẦN ĐẤT TRỒNG

I . Chia động từ 1.He (live ) in Ho Chi Minh city . 2.What time ( your brother / usually / get up ) ? 3.My house (be ) in the city and it ( be ) small. 4.Every morning , we (have ) breakfast at 7:00 and we (have ) breakfast now . 5.This (be ) a book and these (be ) pens. II.Hoàn thành câu dùng từ gợi ý : 1.Mr Quang / live / the countryside / and / he / have / big garden . 2.John / not have / literature lesson / Friday . 3.At the moment / my sister / read / a comic book . 4.Mrs Hai / learn / English /Ha Noi / now . 5.He / Like / apples / but / he / not like / bananas . Giups mik với ạ

Hôm nay cháu cho câu thật dễ lun nè Cho x^2+y^2=1 và b.x^2=a.y^2. Chứng minh rằng x^2020/a^2010+y^2020/b^1010=2/(a+b)^1010

Giải các pt sau theo phương pháp đặt ẩn phụ đưa về phương trình bậc cao : (trong hjnh)

Hoàn thành nhanh bài tập nhanh nhanh nhanh chỉ cần ghi kết quả

choose the correct ansswer a , b , c or d 1 peles was born .................. october 21^st , 1940 a . in b . on c. at d. by 2, cartoons are not just .................... kids anymore - many adults love watching cartoons too a . with b. about c. to d. for 3 . breda goes jogging every morning to keep.................... a . exercise b. trained c. fit d. health 4. we have a test on monday, ............... i will have to study this weekend a. and b. but c. so d. because 5 . our team couldn't win the championship, .....................they played very well a. so b. despite c, because d. although 6 . have you ever.......................aerobics ? aerobic exercise can help you to lose weight a. played b. done c. gone d. got 7......................is a marathon in miles ? about 26 miles a. how often b. how many c. how long d. how wide

My and phuong (not play)....... Chess in their room now => Peter(brush)...his teeth every Morning => Đề bài:use the correct form of the verbs in brackets

(1+tan^2x) (1+sinx)=cos 2x/1-sin 2x

IV. Read the passage and answer the questions. It was the first lesson after the summer holidays at a small school in England. The lesson was about the seasons of the year. “There are four seasons in the year,” said the teacher, “They are spring, summer, autumn, and winter. In spring, it is warm and every thing begins to grow. In summer ,It is hot and there are many flowers in the fields and gardens. In autumn, there are many vegetables and much fruit. Everybody likes to eat fruit. In winter, It is cold and it often rains. Sometimes there is snow on the ground.” Here the teacher stopped and looked at one of the pupils “stop talking, Tom,”he said. “Now listen to me. Can you tell us when is the best time of apples?” “Yes, sir,” answered Tom. “It is when the farmer is not at home and there is no dog in the garden.” 1. Where did the lesson take place? ………………………………………………………………………… 2. What was the lesson about? ………………………………………………………………………… 3. What did the teacher ask Tom to do? ………………………………………………………………………… 4. What did the teacher asked the class to do? ………………………………………………………………………… 5. Did the teacher say “Stop talking, Tom,”? ………………………………………………………………………… V. Write the correct form of the words given in capital letters to complete the following sentences. 1. Their children have quite ………………characters. DIFFERENCE 2. My brother bought a new…………..rod yesterday. FISH 3. Mr. Jane runs his business very ………….. SUCCESS 4. I like the city life because there are many kinds of ………. ENTERTAIN 5. The scouts do the……………..work. VOLUNTEER 6. Is there anything……………… on TV tonight? INTEREST 7. What is the correct……………..of this word? PRONOUNCE 8. My uncle often spends his free time doing volunteer work at a local............. ORPHAN 9. Relax for some minutes and you’ll feel more………….. COMFORT 10. In electronics, we learn to repair ...................appliances. HOUSE VI. There is one mistake in each of the following sentences. Find out and correct it. 1. He has waited there for a quarter past six. (1)…………….. 2. Surface mail is many cheaper than air mail. (2)…………….. 3. They do their best to keeping the family happy. (3)……………. 4. The armchair is in the living room, among the television and sofa. (4)……………. 5. Tourists usually have a bus to the countryside. (5)…………… VII. Fill in the blank with one suitable word. Charlie Chaplin was born in a very poor part of London. (1) ………………father was a comedian and his mother worked (2) ………………a dancer and a singer. Neither of them (3) ………………successful so the family (4) ……………… very little money. The first time he himself earned (5) ……………… by dancing and singing, he was only five years old. He did many kinds of jobs, but what he loved best was working (6) ………………the theatre. When he (7) ……………… about fifteen, he joined a traveling theatre company and went on trips to America. On one such tour, (8) ……………… was offered a part in a film, so he went to Hollywood, where he eventually became both a famous actor (9) ……………… film director. He died in Switzerland in 1977, at the (10) ……………… of 88. There is now a statue of him in Leicester Square, London, the city of his birth and early up-bringing. VIII. Fill in each blank with one suitable preposition. 1. It’s 2.5 km…………my school………..the movie theatre. 2. I live ………..Xuan Dieu street……….my grandparents 3. She is talking…………her students in the school yard. 4. My new house is different……….my old house. 5. My father is a farmer. He works………..a farm. 6. Does your aunt work ……….the central hospital? – Yes, she is a nurse there. 7. I’m always busy. I must work ………..early morning until night. 8. Mr. Minh is a journalist. He writes ………..Tuoi Tre newspaper. 9. This apartment is suitable………….my family. 10. I often help my parents ………….the housework after school.