Một bể nước dạng hình hộp chữ nhật có kích thước ở trong lòng bể là: chiều dài 2m, chiều rộng 1,5m và chiều cao 1m. Khi bể không có nước người ta mở vòi cho nước chảy vào bể, mỗi giờ được 0,5m3. Hỏi sau mấy giờ bể sẽ đầy nước ? giúp mình với ạ

Một vật chuyển động thẳng biến đổi đều có phương trình chuyển động là: x=- 1/2T bình+2T+4(m). Công thức vận tốc của vật có dạng A. v=t (m/s) B. v=t+4(m/s) C. v=t+2(m/s) D. v=-t+2(m/s)

Cần gấp lắm ạ mn ơi. Mai mình phải nộp rồi Exercise for unit 2– SCHOOL TALKS I/ Pronunciation: 1. a disaster b. fast c. satisfy d. pasture 2. a. honest b. honey c. harvest d. harder 3. a. comfort b. cousin c. suffer d. studious 4. a. guitarist b. fare c. narrative d. careful 5. a. complain b. won c. condition d. profession 6. a. marvelous b. far c. travel d. headmaster 7. a. money b. mother c. shop d. cousin 8. a. much b. discuss c. worry d. company 9. a. during b. subject c. bus-stop d. study 10. a. hard b. start c. party d. talk II/ Vocabulary and grammar Exercise 1: choose the best option to fill in the blank 1. _______do you want? – A box of chocolates A. What B. Which C. Who D. How 2. _______ is this building? – It’s about two hundred years old. A. How long B. How far C. How old D. How 3. _______ money do you earn? – About $250 a week. A. How much B. How many C. What D. Which 4. _______ bag are you carrying? – Judy’s A. Which B. What C. Who’s D. Whose 5. _______ first stepped on the moon? – Neil Armstrong, wasn’t he? A. Whose B. Who C. Where D. When 6. _______ is your new school? – It’s very big and friendly. A. What B. How C. Where D. When 7. _______ is it to the post office? – About two hundred meters. A. How far B. How long C. How often D. How much 8. _______ is your national flag? – Red and yellow. A. What B. Which of color C. What color D. Which 9. _______ do you take a holiday? – Once a year. A. What B. How C. Who D. Whom 10. _______ do you go to school? – By bus. A. What transports B. How C. Where D. Which bus 11. Mai usually goes to school on _____________. A. bicycle B. foot C. bus D.taxi 12. We are ____________ 10 subjects this semester. A. taking B. doing C. working D. getting 13. My father got ____________ in the traffic jam yesterday afternoon. A. crowded B. interested C. acquainted D. stuck 14. My mother is an architect by _____________. A. work B. profession C. position D. occupation 15. What is her _____________ towards your apology? A. attitude B. idea C. way D. opinion 16. It was very kind of_________ to send me this Christmas card. A. him B. he C. his D. himself 17. She often eats too much and she always ____________ about her weight. A. interests B. worries C. puts on D. wants to lose 18. For the important meeting, you'd better ___________on time or a bit early. A. arrive B. to arrive C. arriving D. arrived 19. My younger brother is keen on ________ the volleyball club. A.join B. to join C. joining D. joined 20. He offered _____________ me the money, I didn't like taking it but I had no alternative. A. lend B. to lend C. lending D. lent 21. He didn't feel like working so he suggested ___________ to Tan Da Resort for a day. A. go B. to go C. going D. went 22. _____________did the train leave? - Five minutes ago. A. When B. How many minutes C. How long D. How much time 23. Can you help me ___________ this table? A. moves B. to move C. moving D. moved 24. I want to change another job. I can't stand ______________ here any more. A. working B. work C. to work D. worked 25. He needs to work harder if he wants ______________ progress. A. make B. to make C. making D. made 26. He hates __________ the phone, and very often just lets it ring. A. answer B. to answer C. answering D. answered 27. It is usually easier ______________ a subject by reading books than by listening to lectures. A. to learn B. to learn C. learning D. learnt 28. In the afternoon, I often go to the library to __________ books. A.think B. read C. buy D. pay 29. In my country, students often have a three-month _______________every summer. A. break B. play C. rest D. holiday 30. It is not good for children to go _____________ bed late. A. in B. on C. at D. to 31. _____________ subject(s) do you have today? A. Which B. Who C. What D. When Exercise 2: Make questions with the underlined part in each sentence 32. I’m going to buy a new bicycle next week. __________________________________________ 33. I ride my bike to school everyday. __________________________________________ 34. She had to go to school by bus yesterday because her bike had a flat tire. _________________________________________________ 35. Nam got his new bike two weeks ago. _________________________________________________ 36. I felt better after I took a nap. _________________________________________________ 37. They stayed in Hanoi for 5 days _________________________________________________ 38. My sister gives me this gift _________________________________________________ 39. Ho Chi Minh was born in Nghe An on May 19th 1890 _________________________________________________ 40. This street is 10km long _________________________________________________

chỉ ra góc sole và đồng vị (trong và cùng phía)

Một vật chuyển động thẳng biến đổi đều có phương trình chuyển động là: x=- 1phần2Tbình +2T+4(m). Công thức vận tốc của vật có dạng

0 biết mng ngủ chưa nhưng xác địn giúp e mấy góc sole và đồng vị(trong và cùngf phía)

An và bình lập kế hoạch trồng 35 cây hoa trong vườn. An đã trồng được 12 cây hoa. Bình đã trồng được 13 cây hoa . Hỏi cả hai bạn trồng được tất cả bao nhiêu cây hoa. Hỏi an và bình cần trồng thêm bao nhiêu cây hoa nữa để hoàn thành kế hoạch giúp mình với vote5* ạ

Giúp em với ạ em cảm ơn nhiều ạ

Mn giải hộ e bài toán này với ạ

Cho em xin cách giải chi tiết với ạ