An inflated car tyre is considered to have a constant volume, regardless of any changes in temperature or pressure. Use the kinetic theory of gases to answer following.
a) How does the air in the tyre exert pressure on the walls of the tyre?
b) Why is the pressure the same at all points on the inside wall of a tyre?
c) What happens to the pressure on the inside walls of the tyre if the temperature of the air increases? Explain your answer.
d) More air is pumped into the tyre whilst the temperature is kept constant until there are twice as many molecules as before. Explain why you would expect the pressure to be doubled.

Why is metal often used for cooking pan?

As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.

The arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato