Đáp án:
800N
Giải thích các bước giải:
Vì xe chuyển động thẳng đều nên lực kéo của động cơ bằng với lực ma sát.
=> Fms=P:v=8000:10=800N
một khu vườn hình chữ nhật có chiều dài gấp 3 lần chiều rộng và chiều rộng kém chiều dài 32,6m.tính chu vi và diện tích khu vườn hình chữ nhật đó
nêu một số đặc điểm của công nghiệp và nông nghiệp CỘNG HÒA NAM PHI
Giúp mik vs ạ mai nộp r 1………….. I live in a village by the Mekong River. Every day, like most of my friends, I walk to school. It is three kilometres away. After class, I often help my mother collect water from the river and feed the chickens. At the weekend, the villagers often gather at the community hall where there is a TV. The adults watch TV, but more often they talk about their farm work and exchange news. The children run about, playing games and shouting merrily. Laughter is heard everywhere. 2………………. My father sometimes takes me to the market town nearby where he sells our home products like vegetables, fruits, eggs ... He then buys me an ice cream and lets me take a ride on the electric train in the town square. I love those trips. 3……………….. On starry nights, we children lie on the grass, looking at the sky and daring each other to find the Milky Way. We dream of faraway places. 1. Choose the correct heading for each paragraph. Our dreams Life in the village My trips to town 2. Find a word/ phrase from the passage which matches the definition. a. Get water from a river and bring it home. :…………………….. b. Give food. :……………………….. c. A place where the villagers can gather for important events. :………………………. d. A place where a street is used for the locals to sell their home products. :…………………… e. Sit on a bus or a train for it to take you about. :………………………………. f. Challenging somebody to do something difficult. :…………………………….. 3. Answer the questions 1. What does the boy often do to help his parents after class? →……………………………………………………………………………….. 2. When does the villagers gather at the community hall? →……………………………………………………………………………….. 3. Do all the villagers gather at the community hall at the weekend to talk about their farm work and exchange news? →……………………………………………………………………………….. 4. Who sometimes takes him to the market town nearby ? →……………………………………………………………………………….. 5. What does he sell at the market? →……………………………………………………………………………….. 6. Does he like to ride on the electric train on his trips to town? →……………………………………………………………………………….. 7. What do the village children dream about? →……………………………………………………………………………….. 8. Do the village children dare to each other to find the Galaxy? →………………………………………………………………………………..
a] Tìm 2 từ đồng âm với mỗi từ sau : lợi , thu, tiền , câu và đặt 1 câu với cặp từ đồng âm đó b]phát hiện lỗi sai trong các câu và sửa lại cho đúng : - ban đêm trước ngày khai trường , mẹ không ngủ được . -cuộc chia tay đột ngột quá , Thủy người mất hồn . -vì bạn Lan nỗ lực trong học tập thì bạn ấy sẽ đạt kết quả cao .
Vì sao thực dân pháp xâm lược nước ta? Đánh giá thái độ chống Pháp của nhà Nguyễn.
Giải gấp câu Trắc nghiệm và mn ơi!!!{50₫}
Tìm gạch chân lỗi sai và sửa lỗi sai 1. What does they wear at their school? -> 2. Do he go to the library every week? -> 3.Windy always watch TV at 9 p.m before going to bed at 10 p.m. -> 4.Sometimes, we goes swimming together with her family -> 5.How does Linda carries such a heavy bag? ->
Cho tam giác ABC cân tại A, tia phân giác góc A cắt BC tại M.a a) Chứng minh MB=MC và MA vuông góc BC. b) Trên tia đối MA lấy D sao cho MA=MD. Chứng minh AB//CD c) Qua M vẽ ME vuông góc AB ( E thuộc AB ), MF vuông góc AC ( F thuộc AC ). Chứng minh ME=MF. d) Chứng minh ME vuông góc CD. các bạn giải giúp mk nha MK ĐANG CẦN GẤP Ạ .THANKS!!!!
Bài 1 Of all my relatives, I like my aunt Emily the (1)__________ She’s my (2) _________ youngest sister. She has never married and (3) __________alone in a small village near Bath. She’s fifty years old, (4) __________she’s quite young in spirit. She has a fair complexion, thick brown hair and dark brown eyes. She has a kind face, and when you meet (5) __________, the first thing you notice (6) __________her smile. Her face is a little wrinkled now, but I think she is still rather attractive. She is the sort of person you can always go to if you (7) _________a problem and she’s extremely generous. She likes reading (8) _________gardening, and she still goes (9) __________ long walks over the hills. I hope I’m as active as she is when I’m at her (10) __________ . Bài 2 My name is Petty and this is my husband, Phil. We both work in offices in London. We have breakfast at half past seven. We usually have bread, coffee and orange juice for breakfast. For lunch we usually have a salad or soup and sandwich. That’s at about 1.30. We usually have dinner at half past seven in the evening. It is a big meal of the day and we have meat or fish with vegetables and potatoes or rice. We have orange juice with milk. On Saturday we often go to a restaurant for dinner at about eight o’clock. 1. Petty and her husband work in ……………. A. offices B. factories C. hospitals D. clinics 2. Petty and Phil have …………. A. a big breakfast B. a light breakfast C. breakfast with meat D. breakfast with eggs 3. What do they have for lunch? A. salad and sandwich B. salad and soup C. fish and soup D. sandwich and fish 4. What do they drink for dinner ? A. iced tea B. iced coffee C. soda D. orange juice 5. Where do they have dinner on Saturday evenings? A. at home B. at a hotel C. at their friend’s house D. at a restaurant Bài 3 1. How many teachers are there in your school? How many teachers ……………………………………………………? 2. The toy store is to the right of the bakery. The bakery ………………………………………………………………………… . 3. Do you and your friends walk to school every day? Do you and your friends go…………………………………………………? 4. We have English class at 7.15. Our English class…………………………………………………………………. 5. Let us go to the beach and have a good time there. How about…………………………………………………………………?. 6. Is there a colorful picture in your room? Does ……………………………………………………………………… ? 7. How much is a bowl of noodles? What …………………………………………………...................................? 8. How high is the Mount Everest? ð What ...............................................................................................................? 9. I spend two hours a day doing my homework. It ………………………………………………………………...................... 10. No one in my class is as lazy as Tom. ð Tom ……………………………………………………………………………………………
Cho ABC có AB = AC và B = 450 thì tam giác ABC là tam giác
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