A1: In practice, the USB specification limits the length of a cable between full speed devices to 5 meters (a little under 16 feet 5 inches). For a low speed device the limit is 3 meters (9 feet 10 inches). Q2: Why can't I use a cable longer than 3 or 5m?
Clouds form when moist, warm rising air cools and expands in the atmosphere. The water vapor in the air condenses to form tiny water droplets which are the basis of clouds.
How do stratus clouds form? Stratus clouds are formed when an upward-moving current of air collides with a thinner layer of air above it, causing water drops to form. The name stratus cloud derives from the shape of the cloud formation, where the clouds produce one or more layers of cloud cover.