Một vật có khối lượng m=2kg đặt tại chân mặt phẳng nghiêng chịu lực kéo F song song mặt phẳng nghiêng hướng lên trên (F=15N) bỏ qua lực cản của mặt phẳng nghiêng tìm a và vận tốc tại đỉnh mặt phẳng nghiêng x
Một vật có khối lượng m=2kg đặt tại chân mặt phẳng nghiêng chịu lực kéo F song song mặt phẳng nghiêng hướng lên trên (F=15N) bỏ qua lực cản của mặt phẳng nghiêng tìm a và vận tốc tại đỉnh mặt phẳng nghiêng x
Giúp mình nhanh với ạ mình mai mình phải nộp rồi ạ T.T
Đọc đoạn trích sau và thực hiện các yêu cầu:
Hầu hết những ai đạt được thành quả lớn lao trong cuộc sống và phần lớn các nhà phát minh vĩ đại, đều khởi đầu từ một ước mơ. Có khi đó là ước mơ thay đổi cuộc đời mình. Có khi đó là ước mơ giúp đỡ những người khác. Lại có lúc đó là ước mơ tạo ra một điều gì đó lớn lao, chế tạo ra một vật hữu dụng độc đảo cho cuộc sống con người.
Ước mơ đích thực của bạn phải xuất phát từ con tim, chử không phải ngẫu nhiên đến trong giấc ngủ vật vờ hoặc chỉ là một mộng ước “không dám nói ra lời". Có một số bạn trẻ than vãn rằng: “Mơ ước thì nhiều mà thường đạt chẳng bao nhiêu. Thôi thì khỏi mơ cho nhẹ người, vừa tránh được thất vọng, vừa khỏi bị ám ảnh với những cái đích cao ngoài tầm tay”. Các bạn này chưa hiểu đúng về ước mơ và việc sống với ước mơ. Ước mơ là những điều mã bạn thật sự mong muốn, khao khát, hết mình sống vì chúng, nỗ lực đạt được chúng và lòng tràn ngập niềm vui trên con đường theo đuổi ước mơ.
Chúng ta phải đặt cho mình những mục tiêu phải vươn tới trong từng giai đoạn của cuộc đời, phủ trùm lên các mặt cuộc sống: tài chính, sự nghiệp, học vấn, đời sống gia đình, thể chất, các mối quan hệ, đời sống tinh thần, đời sống giải trí... Trên con đường sống với ước mơ, bạn sẽ gặt hải được nhiều niềm vui và thành quả lớn cho cuộc đời.
Câu 1: Nêu phương thức biểu đạt chính của đoạn văn?
Câu 2: Hãy xác định nội dung chính của văn bản.
Câu 3: Theo văn bản, ta phải xác định mục tiêu những ước mơ nào trong từng giai đoạn của cuộc đời?
Câu 4: Anh/Chị có đồng tình với ý kiến: “Ước mơ là những điều mà bạn thật sự mong muốn, khao khát, hết mình sống vì chúng, nỗ lực đạt được chúng và lòng tràn ngập niềm vui trên con đường theo đuổi ước mơ” không? Vì sao?
Câu 5: Anh/Chị hãy viết một đoạn văn (khoảng 10 câu) bày tỏ những suy nghĩ của mình về câu nói được nêu ra ở phần Đọc hiểu: “Trên con đường sống với ước mơ, bạn sẽ gặt hái được nhiều niềm vui và thành quả lớn cho cuộc đời".
Giúp e hứa tick ah. (Làm bài 5 thoi ah)
tại sao tỉ lệ thất nghiệp ở thành thị của đồng bằng sông hồng thường cao hơn mức ttrung bình cả nước?
Cho hình vẽ bên, biết: BAC+CDE-ACD=180° Chứng tỏ AB//DE
Read the following passage and circle the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27.
In new research, scientists showed horses photographs of human faces, and they discovered that horses can (23) between angry and happy faces and react (24) . The scientists fitted the horses with heart monitors which revealed that angry faces (25) their heart rates to rise significantly.
Riders from a club in London also say that there is a special relationship between humans and horses. If you (26) a horse and you are happy and relaxed, then the horse will be relaxed, too, and will help you. When you are not having a great day, the horse can make you feel much better. The riders also said that the horses make people (27) of their own emotions because they react to them.
Question 23. A. separate | B. compare | C. distinguish | D. divide |
Question 24. A. accordingly | B. therefore | C. however | D. contrastingly |
Question 25. A. lead | B. make | C. create | D. cause |
Question 26. A. come | B. approach | C. advance | D. forward |
Question 27. A. know | B. aware | C. ignorant | D. informed |
Read the following passage and circle the letter A, B, C, or D to indicate the correct answer to each of the questions from 28 to 34.
Where would you expect to find the world's most expensive home? New York? Hollywood? Tokyo?
In fact, it's in India's largest city, Mumbai.
Mumbai has been growing rapidly over the last 20 years, and it now has a population of 12.5 million. The city has been getting richer, too; there are over 60 billionaires in India, and about 20 of them are residents of Mumbai. One of these, MukeshAmbani, has created the world's most expensive family home, “Antilia", a huge 27-story contemporary building overlooking the ocean.
The house took more than three years to build. It was completed in 2010, and the Ambani family moved in a year later. No one knows exactly how much Mr. Ambani paid for it, but most experts agree that the total cost was at least US$1 billion.
The house catersto every possible need, with a number of swimming pools, a huge library, a gym, a theatre, and hanging gardens over four stories. There is a spacious health club and an “ice room” full of artificial snow for people who want to chill out in the Mumbai heat. Mr. Ambani's family consists of his
wife Nita, their three children, and his mother - but the house has plenty of room for guests. On the first six stories of the building there are parking spaces for more than 160 cars, and there are three helicopter landing pads on the roof. Even when there aren't any visitors, the Ambani family won't be on their own; the house is so big that it needs hundreds of staff to run it.
Of course, from the top of the house the views over the ocean and the city are spectacular. However, some of the largest slums in Asia are in Mumbai, and they are so vast that it's impossible not to notice them from the top of Antilia. And this is why some Mumbai residents are unhappy about the building. They have questioned whether it is right to spend so much money on a family home in a city where thousands of people live in cramped, dirty accommodation - and where thousands more have no home at all.
But is this criticism fair? Mr. Ambani has certainly spent a huge amount of money on his luxurious home, but there is no doubt that he and his wife have helped the local community in many ways. They have built a school and a hospital, for example, and Mr. Ambani's company employs thousands of Indian people. Antilia's architects were American, but most of the construction workers were local.
The people of Mumbai have been arguing about Antilia ever since it was built. The disagreements will probably continue for years to come.
(Text adapted from: https://goo.gl/4ediiG)
Question 28. The population of Mumbai .
A. has always been big B. is getting smaller
C. includes 60 billionaires D. is bigger now than it used to be
Question 29. The amount that Mr. Ambani paid for Antilia was .
A. exactly US$1 billion B. probably US$1 billion or more
C. definitely less than US$1 billion D. probably less than US$1 billion
Question 30. Which of the following is the closest in meaning to caters to?
A. helps B. ignores C. meets D. encourages
Question 31. You can see Mumbai's slums from Antilia because they are very .
A. big B. close C. cramped D. poor
Question 32. Antilia was designed by .
A. Indians B. Mr. Ambani
C. Mr. Ambani's company D. Americans
Question 33. Which of the following is mentioned as a criticism of Mr. Ambani?
A. He has spent a lot of money on his home.
B. He never helps local people.
C. He has too much money.
D. His house needs hundreds of staff.
Question 34. We can infer from the text that the author of the passage thinks that .
A. Antilia is a waste of money.
B. Antilia is not a very interesting building.
C. Antilia has created strong feelings among local people.
D. It was a good idea to build Antilia.
Read the following passage and circle the letter A, B, C, or D to indicate the correct answer to each of the questions from 35 to 42.
Since the earliest days of human civilization, people have been aware of the healing power of music. Over two thousand years ago, the Ancient Greek doctor Hippocrates recommended playing music to patients who were depressed, and nowadays people still rely on music to improve or enhance their mood.
Val Robinson is a typical music therapist. She loved music when she was at school and attained a high level of proficiency with several instruments. “The piano was the instrument that I liked most," she says. “But I didn't want to be a professional musician because I didn't enjoy performing in front of a big audience. I wanted to help people, but I didn't want to be a nurse or a doctor. So I decided to train as a music therapist."
The room where Val treats her clients is full of different musical instruments. It looks like a classroom at a music school, but, despite appearances, a music therapy session isn't like a lesson. “Many of my clients are young people with behavioural disorders such as autism," says Val. “They can be very anxious and withdrawn, and they find socializing difficult."
In their sessions, Val often works with small groups of clients and they play on different instruments. “They can all try different instruments and choose one that suits them," explains Val. “Improvising is a sociable, fun activity which helps the young people feel more confident and involved." Clients like these also sometimes have difficulty putting their emotions into words. “I help them express themselves through composing and playing music," Val adds. “After the therapy session, they usually feel much more positive."
Music therapy can help people with physical problems, too. “Some of my clients are older people with serious or terminalillnesses such as cancer. Many of them are having treatment which is long and painful," says Val. "I visit them at the hospital or at home, and we play music together, or some clients prefer simply to listen to music. Music makes them feel calmer, and takes their mind off their treatment."
(Text adapted from: https://www.musictherapy.org/about/personal_story/)
Question 35. It can be inferred from paragraph 1 that Hippocrates .
A. was a great musician
B. understood the healing power of music
C. was frequently depressed
D. was a music therapist
Question 36. Val Robinson is very good at...
A. helping orchestras to produce better music.
B. talking to people who have emotional problems.
C. performing in front of a lot of people.
D. playing a number of musical instruments.
Question 37. Many of Val's clients find it difficult to .
A. play a musical instrument well
B. feel emotions
C. communicate with other people
D. take part in music therapy sessions
Question 38. At Val's therapy sessions, people with behavioural disorders often .
A. create music
B. rehearse for a concert
C. practice the piano
D. perform music that Val has written
Question 39. After a therapy session, most clients ...
A. want to talk a lot.
B. believe that they are better musicians.
C. feel better about themselves.
D. are much healthier.
Question 40. Which of the following is closest in meaning toterminal illnesses?
A. infectious diseases B. incurable diseases
C. minor illnesses D. seasonal illnesses
Question 41. Which of the following is true about Val's job?
A. She has to travel for her job.
B. She is unhappy when treating clients.
C. She makes all of her clients play music with her.
D. Her clients are children.
Question 42. Which one of the statements below CANNOT be inferred from the text?
A. Clients can relax during a music therapy session.
B. Val has been interested in music since she was young.
C. The idea of music therapy has existed for a long time.
D. Everyone can benefit from music therapy.
Mik cần gấp 1 trong 2 đề
bài 1
a. Một vât được kéo thẳng đều trên mặt sàn nằm ngang với lực kéo theo phương ngang có cường độ 500N. Hãy biểu diễn các véc tơ lực tác dụng lên vật . Tỉ xích 1cm ứng với 200N.
b. Biểu diễn véc tơ lực tác dụng lên một vât theo phương thẳng đứng, chiều từ dưới lên, cường độ 30N. Tỉ xích 1cm ứng với 3N