The helicopter is able to hover in one spot by using its main rotor to generate lift and its tail rotor to counteract the torque produced by the main rotor. This allows the helicopter to maintain a stable position in the air. The flashing red and green lights are typically used to improve the visibility of the helicopter, especially at night or in low visibility conditions. The red light is usually located on the left side of the helicopter and the green light on the right, helping other aircraft to determine the helicopter's direction of travel. **

Shopping can still be fun without money by simply browsing and trying on different items, exploring new trends, and getting inspiration for future purchases. It can also be enjoyable to create wish lists or window shop without the pressure of making a purchase. Additionally, participating in free events or activities at shopping centers, such as live music or art exhibits, can also make the experience enjoyable without spending money. Ultimately, the enjoyment of shopping can come from the experience and the social aspect, rather than the act of purchasing items. **

Einstein had three children: Lieserl, Hans Albert, and Eduard. Hans Albert became a successful engineer and professor, while Eduard struggled with mental health issues. There is no definitive answer to whether Einstein's children were "smart" as intelligence is a complex and multifaceted trait. However, Hans Albert's successful career and Einstein's own intellectual prowess suggest that intelligence may have run in the family. **

Helicopters are designed to hover relatively easily. Their ability to hover is one of their key advantages over other aircraft. Helicopters achieve this by using their main rotor to generate lift and their tail rotor to counteract the torque produced by the main rotor. This allows them to maintain a stable hover, making them useful for tasks such as search and rescue, aerial photography, and transportation in areas with limited space for landing. **

Helicopters hover relatively lightly. They are able to stay in one place in the air by generating lift from their rotor blades, which allows them to hover with minimal effort. The design of helicopters allows for precise control of their altitude and position, making them versatile aircraft for various tasks such as search and rescue, transportation, and aerial filming. **

No, airplanes are not designed to hover in the air like helicopters or drones. Airplanes rely on forward motion and lift generated by their wings to stay airborne. They need a certain speed to maintain lift and stay in the air, so hovering is not possible for traditional airplanes. **

Adults go shopping with children and use a shopping cart for several reasons. Firstly, it allows the adult to keep the child close and under control while navigating through the store. It also provides a safe and secure place for the child to sit or stand, reducing the risk of them wandering off or getting lost. Additionally, using a shopping cart can make the shopping experience more convenient for the adult, as they can easily transport both their purchases and the child throughout the store. Overall, shopping with children and using a shopping cart helps to ensure a smoother and more manageable shopping trip for both the adult and the child. **

Children can behave in a variety of ways when shopping. Some may become excited and energetic, wanting to explore and touch everything they see. Others may become bored or restless, leading to whining or tantrums. Some children may also become easily distracted, making it difficult for them to stay focused on the task at hand. Overall, children's behavior when shopping can vary greatly depending on their age, temperament, and the specific circumstances of the shopping trip. **