Although the velocity of air molecule is nearly 0.5 km/s, yet the smell of scent spreads at a much slower rate. Why?

The kinetic theory of gases states that the average squared velocity of molecules varies linearly with the mean molecular weight of the gas. If the root mean square (rms) velocity of oxygen molecules at a certain temperature is 0.5 km/sec. The rms velocity for hydrogen molecules at the same temperature will be :

R.M.S. velocity of oxygen molecules at N.T.P is 0.5 km.ls. The R.M.S velocity for the hydrogen molecule at N.T.P is

A man sets his watch by the noon-whistle of a factory at a distance of 1.5 kilometers. By how many seconds is his watch slower than the clock of the factory? (Velocity of sound in air is 332 m s^(-1) )

Sound waves from a loudspeaker spread nearly uniformly in all directions if the wavelength of the sound is much larger than the diameter of the loudspeaker. (a) Calculate the frequency for which the wavelength of sound in air is ten times the diameter of the speaker if the diameter is 20 cm. (b) Sound is essentially transmitted in the forward direction if the wavelength is much shorter than the diameter of the speaker. Calculate the frequency at which the wavelength of the sound is one tenth of the diameter of the speaker d- iescribed above. Take the speed of sound to be 340 m s^-1 .

Two sounds are heard at the end of an iron rod 5 km long at an interval of 14 seconds, when a source of sound is placed at the other end of the rod. The velocity of sound in air is 330 m/s. the velocity of sound in iron is aproximately

A flask contains 10^(-3)m^(3) gas. At a temperature, the number of molecules of oxygen at 3.0xx10^(22) . The mass of an oxygen molecule is 5.3xx10^(-26) kg and at that temperature the rms velocity of molecules is 400m/s. The pressure in N//m^(2) of the gas in the flask is ..............

The velocity of 4 gas molecules are given by 1km/s , 3km/s , 5 km/s and 7km/s . Calculate the difference between average and RMS velocity .

The respective speeds of five molecules are 1, 2, 3, 4 and 5 km//s . The ratio of their rms velocity and the average velocity will be

At constant pressure, calculate the root mean square velocity of a gas molecule at temperature 27^@ C if its rms speed at 0^@ C . Is 4 km/s.

The figure shows a graph of the angular velocity of a rotating wheel as a function of time. Although not shown in the graph, the angular velocity continues to increase at the same rate until t = 8.0 s. What is the angular displacement of the wheel from 0 to 8.0 s?