A classical gas of molecules each of mass m, is in thermal equilibrium at the absolute temperature, T. The
velocity components of the molecules along the Cartesian axes are vx, vy, and vz. The mean value of (vx + vy)^2 is...
(a) KbT/m
(b) 3KbT/2m
(c) KbT/2m
(d) 2KbT/m
Answers
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2
Answer:
(vx + v)
2 = v
2
x + 2vxv + v
2
= v
2
x + 2vx
q
v
2
x + v
2
y + v
2
x + v
2
y
=
kT
m
+ 0 +
kT
m
+
kT
m
= 3
kT
m
Explanation:
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