one kg of a diatomic gas is at a pressure of 80000N/meter sqare .the density of the gas is 4kg/meterqubie.what is the energy of the gas due to its thermal motion?
pV=mRT/M
=> ρ =m/V = pM/RT =>
RT=pM/ ρþ
U= miRT/2M =
=mipM/2M ρ =mip/2 ρ=
=1•5•80000/2•4 = 50000 J