Nature of Physical World and Measurement
Laws of Motion
Work, Energy and Power
Motion of System of Particles and Rigid Bodies
Properties of Matter
Heat and Thermodynamics
Kinetic Theory of Gases
- Expression for pressure exerted by a gas
- Kinetic interpretation of temperature
- Relation between pressure and mean kinetic energy
- Some elementary deductions from kinetic theory of gases
- Root mean square speed (vrms)
- Mean (or) average speed (v)
- Most probable speed (Vmp)
- Maxwell-Boltzmann speed distribution function
A fresh air is composed of nitrogen N2 (78%) and oxygen O2 (21%). Find the rms speed of N2 and O2 at 20°C.
If the rms speed of methane gas in the Jupiter’s atmosphere is 471.8 ms−1, shows that the surface temperature of Jupiter is sub-zero.
Calculate the temperature at which the rms velocity of a gas triples its value at S.T.P. (standard temperature T1 = 273 K)
A gas is at temperature 80°C and pressure 5 × 10−10 Nm−2. What is the number of molecules per m3 if Boltzmann’s constant is 1.38 × 10−23 J K−1
If 1020 oxygen molecules per second strike 4 cm2 of wall at an angle of 30° with the normal when moving at a speed of 2 × 103 ms−1, find the pressure exerted on the wall. (mass of one oxygen atom = 2.67 × 10−26 kg)
Estimate the total number of air molecules in a room of a capacity of 25 m3 at a temperature of 27°C.