This is one of the first things you learn in Chemistry class. PV=nRT where n and R are constants and pressure is dependent on temperature and volume. The pressure on the walls of the tire is a reflection of how energetic the molecules of air are.
Air leaves a tire when the tire valve is open due to the pressure. The pressure outside of the tire is lower than the pressure inside the tire.
scalar
As the temperature increases, the air molecules inside the bicycle tire gain more energy, leading to an increase in their speed. This increased speed causes the molecules to exert greater pressure on the walls of the tire, resulting in an increase in the tire pressure.
The air molecules bouncing around off the inside of the tire. If you force something into a confined space that is usually allowed to be free it will exert pressure(Force) on th walls of it's container. An increase in tire temperature or friction will cause the air pressure to increase while colder temperatures will cause it to decrease.
Because the air inside the tire is under pressure. Gas always flows from a region of higher pressure to a region of lower pressure. As the pressure inside the tire is greater than the pressure outside, the air always comes out of the bicycle tyre.
air pressure helps on the inside of a tire but on the outside it does not usually help. as an observation if you get a flat tire and put air inside the tire it gives pressure on the inside were the hole is but if it is on the outside and lets say a pipe rolls down the highway and it hits your tire air pressure helps it make a hole in it or make it flat.
Air pressure inside a tire is a scalar quantity because it only has a magnitude (a numerical value) and no direction.
When a car tire is inflated, the air particles inside the tire collide with the walls of the tire and with each other, creating a force that exerts pressure on the walls of the tire. The pressure builds up as more air is pumped into the tire until it reaches a point where it is equal to the atmospheric pressure pushing back on the tire.
When you are not sitting on it.
The pressure inside a tire increases at the end of a journey due to a combination of factors such as heat generated during motion causing the air in the tire to expand, and the tire's construction materials allowing for some flex under load which can increase pressure. Additionally, as the tire heats up, the air molecules move faster and spread out, leading to an increase in pressure inside the tire.
A tire gauge works by using a pressure sensor to measure the air pressure inside a tire. When the gauge is pressed onto the tire valve, it detects the pressure and displays the reading on a dial or digital screen. This allows the user to know if the tire has the correct amount of air pressure for safe driving.
As the air temperature outside the tire increases, the kinetic energy of air molecules also increases, leading to higher pressure inside the tire. Conversely, if the temperature decreases, the kinetic energy decreases, resulting in lower pressure inside the tire. This change in pressure is described by the ideal gas law, which states that pressure is directly proportional to temperature when volume and amount of gas are constant.