Theo mô hình động học phân tử,

Hai điện tích điểm có độ lớn không đổi được đặt trong cùng một môi trường có hằng số điện môi là $\epsilon$, nếu tăng khoảng cách giữa hai điện tích lên 2 lần thì lực tương tác giữa chúng sẽ

Con la được sinh ra từ phép lai giữa ngựa cái và lừa đực. So với ngựa và lửa, con la có sức sống mãnh liệt, cơ bắp khoẻ mạnh và sức làm việc hiệu quả hơn. Thành tựu tạo ra con la là ứng dụng của phương pháp nào dưới đây?

She opened the cupboard ___________ she kept her best glasses.

Cấu hình electron nào sau đây là của nguyên tố kim loại

Điền số liệu còn thiếu (dưới dạng số thập phân) để hoàn thành bài tập sau:

Trong tự nhiên, carbon có hai đồng vị bền là ¹²C và ¹³C, chiếm tỉ lệ số nguyên tử lần lượt là 98,9% và 1,1%.

- Nguyên tử khối trung bình của carbon là amu.

- Số mol carbon có trong 2,4022 gram than chì (giả sử chỉ chứa toàn nguyên tố carbon) là mol.

- Số mol ¹²C có trong lượng than chì trên là mol.

Read the following passage about Life in The Future 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 23 to 30.

In the near future, technology is expected to bring about significant changes to how we lead our lives. One of the most notable shifts will be the way we keep up with the rapid pace of technological advancements. With smart homes and autonomous vehicles, our daily routines will increasingly depend on sophisticated systems designed to make our lives easier. For example, smart assistants will look out for our needs, such as ordering groceries, adjusting room temperatures, or even scheduling doctor’s appointments.

Another major development will be in communication. Today, we already use video calls to stay in touch with friends and family across the globe, but the future promises even more immersive experiences. Virtual reality could allow us to hang out with people in virtual spaces, regardless of where they physically are. As a result, geographical barriers will become less relevant, creating a more connected and global society.

Healthcare is also likely to transform. Advances in artificial intelligence will enable doctors to look after patients more efficiently, diagnosing diseases earlier and prescribing personalized treatments. These changes may extend our lifespan and improve our quality of life. Additionally, breakthroughs in renewable energy will play a key role in sustaining our future. With green energy sources, such as solar and wind power, we can cut down on harmful emissions and move toward a more sustainable planet.

While these advancements sound exciting, they also bring challenges. As technology becomes more integrated into our lives, we must be careful to ensure privacy and security. We need to watch out for potential risks, like data breaches and the misuse of personal information. With thoughtful planning, however, the future holds great promise for improving the way we live, work, and interact with the world.

According to the passage, which of the following statements is TRUE?

Read the following passage about the Science in Service of Humanity 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.

Science has come out of its shell in laboratories to become a powerful force for human advancement. Modern scientific endeavors increasingly focus on addressing real-world challenges affecting communities globally. From developing vaccines that save millions to creating technologies connecting people across continents, science serves humanity in countless ways. This shift represents a fundamental evolution in how we perceive scientific progress—not merely academic pursuit but a practical tool for improving lives and solving pressing problems.

[I] Medical breakthroughs exemplify how science directly benefits humanity. [II] For instance, gene therapy offers hope for those with inherited conditions, while artificial intelligence helps diagnose diseases earlier and more accurately. [III] These advancements didn't happen overnight; scientists had to burn the midnight oil for years before achieving success. [IV] Their perseverance demonstrates that when science targets humanitarian goals, results can transform society profoundly.

Environmental science has emerged as another crucial domain where laboratory work translates into human welfare. Climate scientists provide data informing policy decisions affecting billions. Conservation biologists develop strategies to protect biodiversity, ensuring future generations benefit from natural resources. Agricultural researchers create drought-resistant crops helping communities withstand changing climate conditions. Despite these contributions, environmental science faces challenges including funding limitations, political resistance, and urgency of addressing accelerating climate change. Nevertheless, dedicated scientists continue their work, recognizing environmental health directly impacts human wellbeing.

The future of science in service of humanity looks increasingly collaborative and inclusive. Modern approaches incorporate diverse perspectives, including indigenous knowledge and community participation. Citizen science projects engage non-professionals in data collection, democratizing the scientific process. Open-access publishing makes research findings available to anyone with internet access, not just wealthy institutions. These developments suggest science's greatest potential lies in becoming more accessible and responsive to human needs. As we face complex global challenges, from pandemics to climate change, science serving humanity offers our best hope for a sustainable future.

Which of the following can be inferred from the passage?

Read the following passage about the impact of social media on mental health 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.

[I] In recent years, social media platforms have become a central part of daily life, offering users countless ways to connect, share, and communicate. [II] While these platforms offer many advantages, experts have noted rising concerns about their effects on mental health, particularly among young people (Smith & Anderson, 2018). [III] Studies reveal that excessive social media use can contribute to feelings of anxiety, depression, and loneliness, despite its intention to promote connection and social interaction (Twenge & Campbell, 2019). [IV]

A primary reason for these mental health concerns is the tendency for social media users to compare themselves to others. Platforms like Instagram and Facebook often highlight idealized lifestyles, leading users to feel inadequate about their own lives. Additionally, the constant notifications and messages contribute to a "fear of missing out," or FOMO, which keeps individuals in a cycle of checking their phones, often reducing the quality of sleep and overall well-being.

There is also a growing body of research suggesting a link between social media use and decreased attention spans. When users frequently switch between apps and notifications, their ability to focus for extended periods may diminish (Rosen, 2019). This shift in attention can interfere with productivity, especially in academic and professional settings, where sustained focus is essential.

Addressing these challenges requires a multi-faceted approach. Some mental health professionals suggest limiting screen time and setting boundaries, such as "device-free" hours before bedtime. Others recommend engaging in offline activities, like reading or exercising, to reduce dependence on social media and build healthier habits. According to psychologists, such strategies can enhance mental resilience and allow for more meaningful, balanced relationships (Robinson & Smith, 2020).

Where in paragraph I does the following sentence best fit?

Young people are particularly affected due to their high engagement with these platforms.

Đường thẳng nào sau đây song song với đt \(y = \sqrt 7 x + 3\)?

Phép toán nhị phân nào sau đây sẽ sinh ra số nhớ khi cả hai bit đều bằng 1?

Nội dung nào dưới đây không đúng quy định quyền hạn, nghĩa vụ của cơ quan, tổ chức, đơn vị, cá nhân có liên quan đến ngân sách nhà nước?

Choose A, B, C or D to make a complete dialogue for each question.

a. Many people feel that way, but once you’re in the air, it’s exhilarating!

b. Most companies have excellent safety records, and you’ll be with a qualified instructor.

c. That’s true, but what if something goes wrong during the jump?

d. I’ve always wanted to try skydiving, but I’m unsure if I can handle the height.

Cho hình chóp \(S.ABCD\) có đáy là hình vuông cạnh \(a\). Tam giác \(SAB\) đều và nằm trong mặt phẳng vuông góc với đáy. Gọi \(M,N\) lần lượt là trung điểm của \(SB,BC\).

Thể tích của hình chóp \(S.ABCD\) là:

Cách thí nghiệm của Morgan về hoán vị gen khác với cách thí nghiệm liên kết gen ở điểm chính nào?

Qua đoạn trích, có thể thấy người Ấn Độ xưa có quan niệm như thế nào về người phụ nữ lý tưởng?

Khi người dùng cập nhật dữ liệu trong bảng chứa khoá ngoài, HeidiSQL sẽ?

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. Mina: Paul, I think you should eat less junk food and more superfoods like blueberries. These foods are better for you and help prevent diseases.

b. Mina: I'm not sure I agree. I believe we should choose the food that we like and is also good for us.

c. Paul: I guess so.

d. Paul: Oh, my stomach really hurts. I ate too many crisps.

e. Paul: You may be right, but I like crisps. I think we should eat the food we like, not just because it is healthy.