Một gàu nước có khối lượng 20kg kéo cho chuyển động đều lên cao 5m trong thời gian 1 phút 40 giây lấy g=10m/s tính công suất trung bình của lực kéo

các bạn ơi làm ơn giúp mình với mình hứa mình sẽ vote 5 sao cho Đề bài Em hãy miêu tả cảnh buổi sáng mùng 1 Tết đã để lại cho em nhiều ấn tượng sâu sắc

viết cho mik phần kết bài thật hay

Tại sao khi bắn súng người ta lại nhắm một mắt?

EXERCISE 4 I.Circle the word that has the underlined part pronounced differently from the others 1. A. answer B. teacher C. butter D. birth 2. A. surprise B. alone C. neighbour D. burn 3. A. of B. fat C. few D. safe 4. A. sping B. visit C. present D. usually 5. A. curl B. keen C. glove D. cook II. Choose the best answer to complete the sentences. 1. -“What would you like to drink now?” - “_______________.” A. No, thanks B. Yes, please C. I like to do nothing D. Orange juice, please 2. All of us enjoy _______ to classical music. A. listen B. listens C. listening D. listened 3. She worked very hard, _______she passed all her exams. A. because B. and C. so D. but 4. Hoa looks red. She was outdoors yesterday. Perhaps she has _______ A. flu B. sunburn C. spots D. stomachache 5. My family has decided to use _________ electricity by using more solar energy instead. A. more B. less C. much D. fewer 6. I ............... playing board games interesting because I can play them with my friends. A. find B. think C. say D. tell 7. -“ Would you like me to turn off your computer? - “ ______________. I’ll do it myself” A. No, thanks B. Yes, please C. Don’t do it D. Of course 8. You like playing monopoly or chess, your hobby may be _______. A. collecting things. B. playing sports C. dancing D. board games III. Read and fill in the blanks with ONE word given in the box. There is one Extra word you don’t need to use. hobby improve when writes because difficult My Favourite Hobby My name is Sara. My favourite _____________(1) is reading. I enjoy reading a book when I am free. I started to do it ______________(2) I was four years old. The first time I did it, I felt interested. So I kept reading. The teachers always taught me to read the difficult words. I was happy when I read a story with a happy ending. I was thrilled when I read a detective story. I enjoy reading ______________(3) I like to explore the imaginative world of my favourite author, J.K. Rowling who _____________(4) “ Harry Potter” . There are a lot of advantages of reading. Reading can make me relaxed and calm. I can also learn new vocabulary items. Then I can further _________________(5) my English. Moreover, it can give me an unlimited imagination, so I can write books in the future. I can learn the different cultures and customs of other countries in the world too. I read at least one hour every day. I read books by myself. I usually read it at home. I wish I could read different kinds of books because it might be very challenging. IV. Read the following passages and answer the questions below. (1.5 pts) Oil painting: Since the 18th century, under the impact of society, culture, and technology, oil painting has undergone dramatic changes. They are rebellious but passionate, and prosperous. Watercolor paintings Watercolor paintings are considered a unique way to creatively represent dreams, illusions, emotions, and bright feelings using water-soluble pigments. Sketch: (Tranh phác họa) Van Gogh did not begin painting until his late twenties. He produced more than 2,000 artworks, consisting of around 900 paintings and 1,100 sketches. Portrait: (Tranh chân dung) The Mona Lisa is a famous 16th-century portrait by Leonardo da Vinci. The true identity of the woman pictured in the portrait remains unknown, despite intensive researchs by art historians. What kind of painting is rebellious? Who was famous for Sketch? When did Leonardo da Vinci draw the portrait ‘ The Mona Lisa”? V. Combine each pair of the following sentences into one, using the suggested conjunctions in the brackets. (1.5 pts) 1. Mr. Hai usually has stomach problems. He eats dinner very close to the bedtime. (so)... ………………………………………………………………………………………………………………. 2. My dad has a lot of carved eggs. He has never sold any of them. (but) ………………………………………………………………………………………………………………. 3. You will get a breathing problem. Clean your bed room more regularly. (or) ……………………………………………………………………………………………………………… VI. Rearrange the jumbled words to make meaningful sentences.(1.0 pt) 1. It/ be/ good idea/ eat/ diferrent/ kind/ fruit/ vegetable/ every day. ……………………………………………………………………………………………………………. 2. My brother/ not like/ ice-skating/ because/ think/ it/ dangerous. …………………………………………………………………………………………………………….

Cho tam giác ABC vuông tại A (AB < AC). Tia phân giác của góc ABC cắt AC tại E (EAC). Từ E vẽ EH  BC ( HBC). a) Chứng minh:  ABE =  HBE. b) Tia HE cắt tia BA tại M, MC cắt tia BE tại N. Chứng minh: NM = NC.

nối bên trái với ý bên sao cho phù hợp A.khởi nghĩa ba đình 1.phan đình phùng B.khỡi nghĩa bãi sậy 2.phạm bành- đinh công tráng C.khởi nghĩa hương khê 3.nguyễn thiện thuận

Cho tam giác ABC có góc A<90 độ. Vẽ ngoài tam giác ABC tam giác vuông cân đỉnh A là MAB, NAC. a, Chứng minh: MC = NB b, Chứng minh: MC vuông góc với NB c, Gỉa sử tam giác ABC đều cạnh 4cm + Tính: MB; NC + Chứng minh: MN//BC

vẽ góc xoy < 90 độ . lấy A ,E thuộc Ox sao cho E nằm giữa O và A . lấy B,F thuộc Oy sao cho OE = OF , OA = OB 1) Tam giác OEF là tam giác gì ? 2)so sánh góc OEF với góc OAB 3)chứng minh EF // AB Giúp mình với ạ !

Trong bài thơ viếng lăng Bác từ hình ảnh “Hàng tre xanh Việt Nam…” ở câu đầu bài thơ đến hình ảnh “Cây tre trung hiếu” ở đây có điểm gì chung và riêng? giúp mình vs mình cần gấp gấp lắm luôn