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## Main Question or Discussion Point

Suppose the molecules of an ideal gas move with a speed comparable to the speed of light. I am trying to adapt the kinetic theory to express the pressure of the gas in terms of m and the relativistic energy, but each time I try to derive the expression, I get: P = (1/3)(N/V)(v/c)√(E

N/V - number density

v - velocity

c - speed of light

E - relativistic energy

m - rest mass

There shouldn't be the term for velocity. Idk what I am doing wrong.

^{2}- m^{2}c^{2}).N/V - number density

v - velocity

c - speed of light

E - relativistic energy

m - rest mass

There shouldn't be the term for velocity. Idk what I am doing wrong.