PCs with water cooling are not 100% silent. While water cooling can significantly reduce the noise generated by traditional air cooling systems, there are still other components in a PC, such as the power supply, graphics card, and hard drives, that can produce noise. Additionally, the pump and fans used in water cooling systems can also generate some level of noise, although it is generally quieter than air cooling. Overall, while water cooling can greatly reduce noise, it may not make a PC completely silent. **

The curtain glides better when the curtain rod is properly lubricated with a silicone-based lubricant. This reduces friction between the rod and the curtain rings, allowing the curtain to move more smoothly along the rod. Additionally, using curtain rings with built-in rollers or ball bearings can also help the curtain glide better by reducing friction and allowing for easier movement. Regularly cleaning the curtain rod and rings can also prevent buildup of dust and debris that can impede smooth movement. **

In GTA 5, you can glide using a parachute. You can jump out of aircraft like planes or helicopters and activate your parachute to glide through the air. This allows you to travel long distances and explore the vast open world of Los Santos from a different perspective. Additionally, there are various parachute challenges and missions in the game that involve gliding to specific locations or targets. **

The Pax sliding doors may not glide for a few reasons. One common reason is that the tracks may be dirty or obstructed, preventing the doors from moving smoothly. Another reason could be that the rollers or wheels on the bottom of the doors are damaged or worn out, causing them to drag instead of glide. Additionally, the doors may not glide if they are not properly aligned with the tracks. Regular maintenance and cleaning of the tracks, as well as checking and replacing any damaged rollers or wheels, can help ensure that the Pax sliding doors glide smoothly. **

The iPhone 8 vibrates even when it is set to silent mode because the vibration function is a separate setting from the ringer volume. This allows users to receive notifications discreetly even when the phone is set to silent. The vibration setting can be adjusted independently to suit the user's preferences for notifications. **

To set up a silent PC, you can start by choosing components with efficient cooling systems, such as large, low RPM fans and heat sinks. You can also use sound-dampening materials inside the PC case to reduce noise. Additionally, selecting a high-quality power supply and a solid-state drive can help minimize noise. As for maximum temperatures, it's generally recommended to keep the CPU and GPU temperatures below 80°C, while other components like the motherboard and RAM should stay below 60°C for optimal performance and longevity. Regularly cleaning the PC and ensuring good airflow can also help maintain lower temperatures. **

Birds calculate their glide angle by adjusting the position of their wings and tail feathers to control their descent. By changing the angle of their wings and tail, birds can increase or decrease their lift and drag, allowing them to control their glide angle. Birds use a combination of aerodynamic principles and instinctual behavior to maintain the optimal glide angle for efficient flight. This ability to adjust their body position in the air helps birds navigate through their environment and conserve energy during flight. **

No, silent letters in English have not always been silent. Many silent letters were once pronounced in Old English or Middle English, but over time, the pronunciation of these letters changed or dropped out of use. For example, the "k" in "knight" was once pronounced, but it eventually became silent. The evolution of language and changes in pronunciation have led to the silent letters we see in English today. **