Advertisements
Advertisements
प्रश्न
Explain why there is fall in temperature with altitude.
उत्तर
As the molecules move higher their potential energy increases and hence kinetic energy decreases and hence temperature reduces. At greater heights more volume is available and gas expands hence some cooling takes place.
APPEARS IN
संबंधित प्रश्न
For polyatomic molecules having 'f' vibrational modes, the ratio of two specific heats,Cp/Cv is..........
Four cylinders contain equal number of moles of argon, hydrogen, nitrogen and carbon dioxide at the same temperature. The energy is minimum in
On what factors do the degrees of freedom depend?
State the law of equipartition of energy and hence calculate the molar specific heat of mono-atomic and di-atomic gases at constant volume and constant pressure.
Show that the average energy of the molecules of a gas is directly proportional to the absolute temperature of the gas.
Determine the molecular kinetic energy (i) per mole (ii) per gram (iii) per molecule of nitrogen molecules at 227°C, R = 8.310 J mole-1 K-1,No = 6.03 x 1026 moleculesKmole-1. Molecular weight of nitrogen = 28.
If universal gas constant is 8.3 joule/mole-Kand the Avogadro's number is 6 x 1023, then mean kinetic energy of the oxygen molecules at 427 °C will be ______.
A flask contains argon and oxygen in the ratio of 3 : 2 in mass and the mixture is kept at 27°C. The ratio of their average kinetic energy per molecule respectively will be ______.
For a rigid diatomic molecule, universal gas constant R = nCp where 'CP' is the molar specific heat at constant pressure and 'n' is a number. Hence 'n' is equal to ______.
When a thin hollow sphere rolls without slipping on a flat surface, the fraction of its total energy associated with rotation is ______.