Một xe ô tô xuất phát từ tỉnh A, đi đến tỉnh B cách A 10 km; rồi lại trở về vị trí xuất phát ở tỉnh A. Kết luận nào dưới đây là đúng?
Một xe ô tô xuất phát từ tỉnh A, đi đến tỉnh B cách A 10 km; rồi lại trở về vị trí xuất phát ở tỉnh A. Kết luận nào dưới đây là đúng?
Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án
- Quãng đường là tổng độ dài đường đi của vật. Trong trường hợp này, xe đi 10km đến B rồi 10km trở lại A, vậy tổng quãng đường là $10 + 10 = 20$ km.
- Độ dịch chuyển là khoảng cách giữa điểm đầu và điểm cuối. Vì xe xuất phát từ A và kết thúc ở A, độ dịch chuyển là 0 km.
Câu hỏi liên quan
Số hiệu nguyên tử cho biết thông tin nào sau đây?
Trong số các vật sau, đâu là vật thuộc thế giới vi mô theo quan điểm Vật lí?
Cho hai tập hợp \(X = \left\{ { - 2; - 1;2} \right\}\) và \(Y = \left\{ {x \in \mathbb{Z}|\left( {{x^2} - 4} \right)\left[ {{x^2} + \left( {{m^2} - 5} \right)x + m} \right] = 0} \right\}\) với \(m\) là tham số.
a) \(X \subset \emptyset \).
b) Số tập con có hai phần tử của tập hợp \(X\) là 3.
c) \(\left\{ { - 2} \right\} \subset Y\).
d) Có hai giá trị của tham số \(m\) để \(X = Y\).
Hoạt động hướng động của thực vật có đặc điểm gì?
Read the following passage about the A Vision of a Harmonious Multicultural Society and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.
By 2050, our world will have undergone remarkable transformations in how different cultures coexist. The walls that once divided nations are vanishing into thin air as global citizens embrace diversity like never before. Technology will serve as the great equalizer, with translation devices making language barriers a thing of the past. In urban centers worldwide, neighborhoods will showcase architectural influences from multiple cultures, creating spaces where everyone feels at home regardless of their background. Public spaces will feature gardens with plants from different continents, symbolic of how various cultures can thrive together in one environment.
[I] Education systems will prioritize cultural literacy alongside traditional subjects. [II] Schools will teach world history from multiple perspectives rather than through a single cultural lens. [III] Students will routinely participate in virtual exchange programs, allowing them to form friendships with peers around the world without leaving their classrooms. [IV] Government policies will recognize that a harmonious multicultural society requires institutional support, with resources allocated to community centers where cultural exchange happens organically through shared meals, festivals, and collaborative art projects.
Economic systems will evolve to value diverse approaches to business and innovation. Companies will actively seek employees from varied backgrounds, recognizing that diverse teams create more innovative solutions. Traditional knowledge from indigenous communities will be respected and incorporated into sustainable development practices. The entertainment industry will produce content that authentically represents multiple cultures, moving beyond stereotypes to show the complexity within each tradition. Digital platforms will help preserve endangered languages and cultural practices through accessible archives and learning tools.
The greatest achievement of this harmonious world will be a new understanding of human identity. People will identify with multiple cultural traditions simultaneously without feeling conflicted about their loyalties. Holidays from various traditions will be celebrated collectively, creating new hybrid celebrations that honor multiple heritages. The concept of "us versus them" will gradually fade as people recognize shared values across different traditions. While challenges will remain, the dominant attitude will be one of curiosity rather than fear when encountering differences.
Which of the following best paraphrases the underlined sentence in paragraph 4?
Phát biểu nào bên dưới là đúng?
A human-like robot that can drive a car could one day be used as a chauffeur, though its creator admits that this may take at least 50 years.
Most driverless cars work very differently to a human driver, using artificial intelligence and custom mechanical systems to directly move the steering wheel and pedals. This approach is much more efficient and simpler than using a robot to drive, but it is also specially made for each particular car.
Kento Kawaharazuka at the University of Tokyo and his colleagues have developed a human-like robot, called Musashi, that can drive a car in the same way as a human. It has a human-like “skeleton” and “musculature”, as well as cameras in each of its eyes and force sensors in its hands and feet. Artificial intelligence systems work out what actions are needed to drive the car and react to events that often happen on roads such as traffic lights changing colour or a person stepping in front of the car. The robot can only perform a limited range of driving tasks at present, such as going forward in a straight line, taking a right- hand turn, and moving at speeds of around five kilometres per hour on non-public roads. “The speed of the pedal or the velocity of the car is not high. Also, the handling of the car is not fast compared to human beings,” says Kawaharazuka.
It seems that a robot at the controls of a car, operating in real traffic conditions and in total safety, is not something we are likely to see soon. As mentioned earlier, it could be decades before a robot could really step into the driver’s seat.
What does “it” in paragraph 2 refer to?
Trong không gian với hệ tọa độ Oxyz, cho điểm \(A\left( 3;1;-2 \right)\), đường thẳng \(d:\frac{x-2}{2}=\frac{y+1}{1}=\frac{z-1}{-1}\) và mặt phẳng \(\left( P \right):2x-y+3z-5=0\).
Tính côsin của góc tạo bởi đường thẳng \(d\) và mặt phẳng \(\left( P \right)\).Read the following advertisement and mark the letter A, B, C, or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 1 to 6.
FLUENT IN ENGLISH
Looking to improve your English? Our courses are perfect for learners of all levels, whether you’re a beginner or more (1) _______.
We offer interactive lessons, practical exercises, and real-life scenarios to build your confidence in speaking, writing, and listening. Study with our (2) _______, who have years of experience teaching English to international students.
Our flexible classes, (3) _______ online and in person, allow you to learn at your own pace. You can join us (4) _______ any of our convenient locations or attend virtual sessions from the comfort of your home.
Don’t delay (5) _______ your English learning journey today and begin (6) _______ fluently like a native speaker. Your success starts here!
Phát biểu nào sau đây sai khi nói về quá trình lên men?
Hệ điều hành nào các chương trình phải được thực hiện lần lượt và chỉ 1 người được đăng nhập vào hệ thống?
Read the following advertisement and mark the letter A, B, C, or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 1 to 6.
ANNOUNCEMENT OF A GRADUATION PARTY
Join us for an ___(1)___ Graduation Party this Friday evening!
Celebrate your achievements on a night ___(2)___ laughter, music, and memories.
From a lively dance floor to interactive games, we've got it ___(3)___! Indulge in delicious treats and capture ___(4)___ moment at our photo booth.
Let's ___(5)___ this milestone remarkable! Don't miss out on the festivities – be there to share the joy and ___(6)___ your success!
Bệnh cúm gia cầm còn có tên gọi là
Nguồn động lực được sử dụng phổ biến nhất đó là:
Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.
a. Secondly, swimming is an excellent way to keep myself fit and healthy.
b. Among my favourite sports and hobbies, I like swimming the best for several reasons.
c. Firstly, I think playing in the water could bring great joy. It also helps reduce stress and I always feel refreshed and relaxed after swimming for about half an hour.
d. It helps build up my muscle strength and prevent many heart and lung diseases.
e. Finally, besides being a great sport, swimming is also an important survival skill, because without knowing how to swim well, it could be dangerous if there is a flood, or simply if we want to play near bodies of water.
Nguyên tố potassium thuộc ô 19 trong bảng tuần hoàn. Cấu tạo nguyên tử này là
A human-like robot that can drive a car could one day be used as a chauffeur, though its creator admits that this may take at least 50 years.
Most driverless cars work very differently to a human driver, using artificial intelligence and custom mechanical systems to directly move the steering wheel and pedals. This approach is much more efficient and simpler than using a robot to drive, but it is also specially made for each particular car.
Kento Kawaharazuka at the University of Tokyo and his colleagues have developed a human-like robot, called Musashi, that can drive a car in the same way as a human. It has a human-like “skeleton” and “musculature”, as well as cameras in each of its eyes and force sensors in its hands and feet. Artificial intelligence systems work out what actions are needed to drive the car and react to events that often happen on roads such as traffic lights changing colour or a person stepping in front of the car. The robot can only perform a limited range of driving tasks at present, such as going forward in a straight line, taking a right- hand turn, and moving at speeds of around five kilometres per hour on non-public roads. “The speed of the pedal or the velocity of the car is not high. Also, the handling of the car is not fast compared to human beings,” says Kawaharazuka.
It seems that a robot at the controls of a car, operating in real traffic conditions and in total safety, is not something we are likely to see soon. As mentioned earlier, it could be decades before a robot could really step into the driver’s seat.
What can Musashi NOT do?
CHỦ ĐỀ: THẾ GIỚI TUYỆT ĐẸP…
(Tham khảo bài văn của chủ đề trong đường link dưới đây ở trang 21)
https://tvsthpt.dlib.vn/app/doc-sach-ebook/d02db18272fe
Và trả lời câu hỏi sau:
Điền những từ ngữ không quá hai tiếng có trong bài đọc vào chỗ trống.
Nhà khoa học cũng là con người, và họ thường phải cân nhắc giữa (...a...) và (...b...)trong quá trình nghiên cứu. Họ cố gắng để lý giải, đo lường và hiểu rõ các hiện tượng tự nhiên dựa trên dữ liệu và kiến thức khoa học, nhưng đôi khi cảm xúc và đạo đức có thể ảnh hưởng đến quá trình nghiên cứu và ra quyết định.
Đáp án a là
Cho các bước sau:
(1) Tiến hành các thí nghiệm theo đúng quy trình và thu thập dữ liệu từ kết quả thí nghiệm.
(2) Báo cáo kết quả thí nghiệm.
(3) Chuẩn bị các thiết bị, dụng cụ, hóa chất, mẫu vật để làm thí nghiệm.
(4) Vệ sinh dụng cụ, phòng thí nghiệm.
Các bước thực hiện khi làm việc trong phòng thí nghiệm là:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 40.
Parents of a Tokyo elementary school are up in arms at being asked to pay 730 dollars for their child's school uniform. A public elementary school in Tokyo's upmarket Ginza district has decided to adopt new school uniforms designed by the luxury Italian designer Armani. The bespoke uniforms, which include a hat and bag, are priced at over 80,000 (730 dollars) each. Parents are angry at the school's decision and are protesting at what they view as the exorbitant price for a uniform of an eight-year-old child. The school said it wanted a designer uniform that represented the rich area of Ginza. School officials visited top department stores and decided to ask the fashion brand Armani to design the uniform.
The expensive uniform has created such a fuss that it has been discussed in Japan's parliament. One lawmaker said that since the school is public and not private, "a certain price range needs to be considered". Finance Minister Taro Aso said. "Clearly it's expensive. It would be tough if a student could not afford to pay for it." Japan's education minister said steps would be taken to ensure the financial burden placed on parents for uniforms, "would not be excessive". Twitter users said young children are not interested in designer clothes. The school principal said. "With humility, I take the criticism that the explanation has been insufficient and not well-timed. I will go on explaining carefully to those concerned."
Why did the school want such an expensive uniform?
