When an automobile travels long distance air pressure in tyres increases slightly. Why?

When a mass is suspended on a metallic wire, the length of the wire increases slightly. Name and state the law that relates to the restoring force developed in the wire and its deformation.

Why rate of reaction increases when surface area increases ?

Why rate of a reaction increase when temperature increases?

Two differen gases 'A' and 'B' are filled in separate containers of equal capacity under the same conditions of temperature and pressure. On increasing the pressure slightly, the gas 'A' liquefies but gas B does not liquefy even on applying high pressure until it is cooled. Explain this phenomenon.