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Relation between Pressure and Kinetic Energy of the Gas #8211; By using the expression for pressure (p) in terms of mean square speed (v¯<sup>2supgt;), p = 1/3 ρ (v¯<sub>2subgt;) Mass of unit volume of gas = 1times;ρ = ρ Mean kinetic energy of translation per unit volume of the gas is E = 1/2 ρ(v¯<sup>2supgt;) From the Eqs. (i) and (ii), we get ∴P/E = 2/3 ⇒ p = 2/3 E [For unit volume]
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