Cho một mẩu nhỏ calcium vào cốc nước có thêm vài giọt dung dịch phenolphthalein. Khi kết thúc phản ứng,

Read the following passage about generation gap 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] The generation gap refers to the differences in attitudes, values, and beliefs between older and younger generations. [II] With rapid advancements in technology and shifting societal norms, the generation gap has become more apparent. [III] As younger generations grow up with modern technology and global connectivity, they frequently experience a world vastly different from that of their parents and grandparents. [IV]

     One of the key reasons behind the generation gap is the rapid pace of technological change. Older generations, who grew up in a world without the internet, smartphones, or social media, often find it difficult to relate to the digital lifestyles of younger people. On the other hand, younger generations have been exposed to technology from a young age, shaping their values and communication styles. Additionally, differences in social values, such as views on work, family, and personal freedom, also contribute to the gap. These differing experiences create misunderstandings and a lack of common ground between generations.

     The consequences of the generation gap can be significant, especially in family dynamics and workplaces. In families, the divide can lead to conflicts between parents and children, as each generation struggles to understand the other’s worldview. In the workplace, generational differences may affect teamwork, communication, and productivity. Younger employees may prioritize flexibility and innovation, while older generations may value stability and traditional work ethics. These differences can lead to friction, decreased collaboration, and a sense of alienation among coworkers.

     To bridge the generation gap, open communication and mutual understanding are essential. Both older and younger generations need to be open to learning from each other and appreciating different perspectives. For instance, older generations can offer wisdom and experience, while younger generations can share their knowledge of technology and new trends. Encouraging intergenerational dialogue through family discussions, mentoring programs, or team-building activities in the workplace can help foster respect and collaboration. By recognizing and embracing their differences, both generations can work together to create a more harmonious society.

PHẦN II. Câu trắc nhiệm đúng sai

Để đo tốc độ truyền âm trong không khí, dụng cụ thí nghiệm được bố trí như hình. Xác định nhận định sau đây đúng hay sai?

Một đoạn dây dẫn điện thẳng dài 33 cm chuyển động theo phương vuông góc với chính nó và vuông góc với từ trường có độ lớn cảm ứng từ là \(B = 21{\rm{mT}}.\) Biết suất điện động cảm ứng trong đoạn dây là \(4,5{\rm{mV}}.\) Đoạn dây chuyển động với tốc độ là

Read the following passage about the history of media and mark the letter A, B, C, or D to indicate the correct answer to each of the questions

    In today’s world, we have different kinds of media available to us at all times. [I] However, did you know that the history of media actually goes back millennia? [II] By this definition, we can say with confidence that human beings created the first type of media around 64,000 years ago when we first began painting simplistic symbols on the walls of caves. [III] Since then, the more we have evolved, the more advanced our media have become. [IV]

    According to experts, it was sometime around 3,400 BC when human beings first began utilising written language as a means of communication. For generations, apart from verbal communication, they had to write everything manually until the mid-1440s. It was Johannes Gutenberg who revolutionised media when he created an invention called the printing press. This marked the beginning of what we now call ‘mass media’: Gutenberg’s innovative invention made print media like books, newspapers and magazines at a large scale and much information with a wider audience than ever before.

    Several hundred years after the invention of the printing press, during the 19th century, we created cameras and later, the radio. The invention of the radio began the age of broadcast media, and the development of television swiftly followed it. This allowed many people to watch fascinating movies, programmes and documentaries, all of which remain popular today.

    In the 2000s, we saw the rise of digital media. Now, we visit web pages, listen to podcasts, stream music and communicate on social media using our smartphones. We even use QR codes to share information instantly. We have come a long way, and so have the ways we communicate!

Which of the following can be inferred form the passage?

Trong quá trình dao động điều hòa của con lắc lò xo thì

Nếu đo nhịp tim trong các thời điểm sau, thời điểm nào đo được số nhịp tim thấp nhất?