. , , , . Δ S . , , m 0 υ -(- m 0 υ) = 2 m 0 υ,
: 0- , υ - .
Δ t Δ S , Δ S υ Δ t. n Δ Sυ Δ t (n - ).
, Δ S , . , 1/3 , , .. 1/6 , , . , , Δ S 1/6 n Δ Sυ Δ t.
Δ P =2 m 0 υ∙ n Δ Sυ Δ t = nm 0 υ2 Δ S Δ t.
, ,
p =Δ Ρ/ (Δ S Δ t) = nm 0 υ2. (7.12)
V N , υ 1, υ 2,..., υN,
υ c= (7.13)
. (3.1) (3.2)
p= nm 0 υ c 2. (7.14)
(7.14) - .
, n=N/V,
pV= Nm 0 υ c 2,
pV= N = W, (7.15)
W .
m=Nm 0, (7.14)
pV= mυ c 2.
= ( ),
pVm= Mυ c 2,
Vm . , - , pVm=RT. ,
RT = Mυ c 2
υc = . (7.16)
= N m 0,
m 0 , N , (7.16) ,
υc= = , (7.17)
: k=R/NA . , υc =480 /, 1900 /. 40 160 /.
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< w 0> = = = k (7.18)
. , N =0 < w 0>=0, . . 0 , , . , , (7.18) - .