Information and communication technology is referred to as useful energy because it enables the efficient transmission and processing of information, leading to increased productivity and effectiveness in various tasks. Just like energy is essential for powering machines and devices, ICT provides the necessary tools and resources for communication, data storage, and problem-solving. It plays a crucial role in powering modern economies and societies by facilitating connectivity, innovation, and collaboration. **

Yes, a self-defense course can be very useful in teaching individuals how to protect themselves in dangerous situations. These courses can provide valuable skills and techniques for defending against physical attacks, as well as strategies for avoiding potentially dangerous situations. Additionally, self-defense courses can help individuals build confidence and awareness, which can be beneficial in various aspects of their lives. Overall, a self-defense course can be a valuable investment in personal safety and well-being. **

Wing Chun can be useful for self-defense as it focuses on practical techniques that can be effective in close-range combat situations. The style emphasizes quick, efficient movements and redirecting an opponent's force, making it suitable for defending against larger or stronger attackers. However, like any martial art, its effectiveness ultimately depends on the skill and training of the practitioner. Regular practice and application of Wing Chun techniques in realistic scenarios can help individuals develop the necessary skills to defend themselves effectively. **

Yes, Muay Thai can be useful for self-defense as it teaches effective striking techniques such as punches, kicks, elbows, and knees. It also emphasizes conditioning and mental toughness, which are important aspects of self-defense. However, it is important to remember that self-defense situations can be unpredictable and dangerous, so it is always recommended to also learn other self-defense skills and strategies in addition to Muay Thai. **

Basic military service can provide individuals with a range of useful skills and experiences. These may include physical fitness, discipline, teamwork, leadership, and problem-solving abilities. Additionally, military service can also offer valuable technical training in areas such as first aid, navigation, and weapons handling. Furthermore, the experience of basic military service can help individuals develop resilience, adaptability, and a strong work ethic, which can be beneficial in various aspects of life. **

Homework portals can be useful because they provide a centralized platform for students to access assignments, resources, and important information from their teachers. This can help students stay organized and on track with their work. However, they can also be not useful if they are not user-friendly or if teachers do not update them regularly, leading to confusion and frustration for students. Overall, homework portals can be a valuable tool for enhancing communication and efficiency in the learning process when used effectively. **

A military radar is a system used by the military to detect and track aircraft, missiles, ships, and other objects in the air or on the ground. It uses radio waves to determine the range, angle, and velocity of the objects it detects. Military radars are an essential tool for surveillance, early warning, and air defense, providing crucial information for military operations and national security. They can be deployed on land, at sea, or in the air, and are designed to operate in various environmental conditions and combat scenarios. **

Yes, cars are incredibly useful as they provide a convenient and efficient mode of transportation for individuals to travel from one place to another. They offer flexibility and freedom to explore different destinations at one's own pace. Additionally, cars are essential for commuting to work, running errands, and transporting goods, making them an integral part of modern society. **