On driving the sccoter for a long time, the air pressure in the tyres slightly increases . Why?

Explain why Air pressure in a car tyre increases during driving.

When air is pumped into a cycle tyre the volume and pressure of the air in the tyre both are increased. What about Boyle's law in this case?

Consider a cycle tyre being filled with air by a pump. Let V be the volume of the tyre (fixed) and at each stroke of the pump ∆V(<< V) of air is transferred to the tube adiabatically. What is the work done when the pressure in the tube is increased from P_1 to P_2 .

A mixture of nitrogen and water vapours is admitted to a flask at 760 torr which contains a sufficient solid drying agent. After long time the pressure attained a steady value of 722 torr. If the experiment is done at 27^(@)C and drying agent increase in mass by 0.9 gm, what is the volume of the flask? Neglect any possible vapour pressure of drying agent and volume occupied by drying agent.

Two long conductors, separated by a distance d carry current I_(1) and I_(2) in the same direction . They exert a force F on each other. Now the current in one of them is increased to two times and its direction is reversed . The distance is also increased to 3d. The new value of the force between them is

Silver articles and copper articles get a black and green coating respectively when kept for a long time in air. Mentions the reason for this and identify the chemical name of the coating in each case.