Một ống mao dẫn hở hai đầu, đường kính trong 2 mm, được đổ đầy nước và dựng thẳng đứng. Tìm độ cao mực nước còn lại trong ống. Cho hệ số căng bề mặt của nước là 0,073 N/m; khối lượng riêng 10³ kg/m³; lấy g=10m/s²

Giúp mình với ạ! Mình cảm ơn rất nhiều.

Chứng minh mọi n thuộc N các phân số tối giản n/n+1

Cho x : 2 = y : 3 = z : 5 và xyz = -240. Giá trị của x là

Cho tam giác AOB cân tại O . Kẻ tia phân giác của góc AOB cắt AB tại H A) Chứng minh HA = HB B) Trên cạnh OA lấy điểm M và trên cạnh OB lấy điểm N sao cho OM = ON . Chứng minh HM = HN C) Chứng minh MN song song AB

I. Verb tenses: 1. It is 6.45 am. Everyone____________(do) morning exercise. 2. She___________________(not often work) at night. 3. She_____________(be) usually late for school. 4. There______________(be) 45 students in my class. 5. Look! The cat_________________(sleep). 6. _____________you_____________(usually listen) to music? 7. What_______________he______________(do) at the moment? – He_______________(use) his computer. 8. My father______________(like) watching TV. 9. ___________they____________(visit) their hometown every year? 10. She______________(get) up at 6 o’clock in the morning. Mình cần gấp ạ :< mình sẽ chọn bạn nhanh và hay và đúng nhất nha ;-; vote 5 sao và CTLHN :<

A) occupy B) puppy C) ready D) study A) accident B) success C) accurate D) accept A) private B) irrigate C) guidance D) environment A) instruction B) shrub C) eruption D) supply A) necessarily B) mechanic C) exception D) apprentice

Làm giúp e bài 2 ý2 và 3 ý đầu bài 4 ạ

mong các bạn giải giups mình những phần này

I’m Ly. I’m tall. I’m light but I’m not weak. I’m strong. I have an oval face. I have short brown hair. I have brown eyes. I have a small nose. I have full lips and small white teeth. 1.Are her lips full? Make the questions for underlined words: 1.…………………………………………? → A bowl of noodles is 3000d. 2. They are playing volleyball. →………………………………………………………………………………………........ 3. She goes to bed at 10 o’clock. →…………………………………………………………………………………………… 4. Her sister needs a bottle of cooking oil and some vegetables. →…………………………………………………………………………………………… 5. His brother has a glass of milk. →…………………………………………………………………………………………… 6. Thanh goes to work by motorbike. →…………………………………………………………………………………………… 7. There is some orange juice to drink. →…………………………………………………………………………………………… 8.…………………………………………? → No. I don’t like noodles. Lan: I’m hot and I’m thirsty. Nam: What would you like? Lan: I’d like some orange juice. What about you? Nam: I’m hungry. I’d like some noodles. What about you, Ba? Would you like noodles? Ba: No, I wouldn’t. I’m tired. I’d like to sit down. Nam: Would you like noodles, Nga? Nga: No, I wouldn’t. I’m full. But I’m thirsty. I’d like some cold drink. 1. How does Lan feel? …………………………………………………………………………………………………………………… …………………………………………. 2. What would she like? …………………………………………………………………………………………………………………… ………………………………………. 3. How does Nam feel? …………………………………….......................................................................…………………………… .. 4. Would he like some noodles? …………………………………………………………………………………………………………………… ………………………. 5. Would Ba and Nga like noodles? …………………………………………………………………………………………………………………… ………………… 6. Do Lan and Nga feel thirsty? …………………………………………………………………………………………………………………… ………………………… VII. Circle the letter A , B , C that best fits each of the blank spaces: Hung is a student. His favorite (1) ……………. is beef. He also likes fish and chicken. He always (2) …………… lemonade in the afternoon. During breakfast, he has eggs, bread (3) …....milk. He has beef or fish (4) ………….his lunch. He (5) …………….some vegetables, too. He wants to have potatoes, cabbage, beans and tomatoes. He (6) …………like peas, lettuce and carrots. Hung doesn’t eat much in the evening . 1. A. food B. fruit C. drink 2. A. have B. drinks C. eats 3. A. and B. or C. an 4. A. on B. at C. for 5. A. eat B. has C. drinks 6. A. don’t B. doesn’t C. aren’t VIII. Read the passage . Then check True (T) or False (F): Today is Sunday. Laura goes to the market with her mother. She buys a bottle of cooking oil, two boxes of chocolate, five kilos of rice, three hundred grams of beef and a can of peas. She buys two cans of soda, too. Soda is her favorite drink. 1. Laura goes to the market with her friend. ………………….. 2. She buys two boxes of chocolates. ………………….. 3. She doesn’t buy beef. ………………….. 4. She likes soda. …………………..