Question

2 (10pts) Pressure=1atm. T=273K. The viscosities for He and Ar are $\eta_{He} = 18.8 \times 10^{-6} m \text{ N.Sec.} m^{-2}$ and $\eta_{Ar} = 21.0 \times 10^{-6} m \text{ N.Sec.} m^{-2}$, respectively. Find a) The ratio of collision cross section, $\sigma_{Ar} / \sigma_{He}$ b) The ratio of thermal conduction coefficient, $K_{Ar} / K_{He}$ c) The ratio of diffusion coefficient, $D_{Ar} / D_{He}$

          2 (10pts)
Pressure=1atm. T=273K. The viscosities for He and Ar are
$\eta_{He} = 18.8 \times 10^{-6} m \text{ N.Sec.} m^{-2}$ and $\eta_{Ar} = 21.0 \times 10^{-6} m \text{ N.Sec.} m^{-2}$, respectively. Find
a) The ratio of collision cross section, $\sigma_{Ar} / \sigma_{He}$
b) The ratio of thermal conduction coefficient, $K_{Ar} / K_{He}$
c) The ratio of diffusion coefficient, $D_{Ar} / D_{He}$

2 (10pts)
Pressure=1atm. T=273K. The viscosities for He and Ar are
ηHe = 18.8 × 10^-6 m N.Sec. m^-2 and ηAr = 21.0 × 10^-6 m N.Sec. m^-2, respectively. Find
a) The ratio of collision cross section, σAr / σHe
b) The ratio of thermal conduction coefficient, KAr / KHe
c) The ratio of diffusion coefficient, DAr / DHe

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University Physics with Modern Physics

Hugh D. Young 14th Edition

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We are given the viscosities of helium (He) and argon (Ar) at a pressure of 1 atm and a temperature of 273 K. The viscosities are: - For He: $18.8 \times 10^{-6} \, \text{N·sec/m}^2$ - For Ar: $21.0 \times 10^{-6} \, \text{N·sec/m}^2$ We need to find: a) The Show more…

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Pressure = 1 atm. T = 273 K. The viscosities for He and Ar are He = 18.8 Ã— 10^-6 NÂ·sec/m^2 and Ar = 21.0 Ã— 10^-6 NÂ·sec/m^2, respectively. Find a) The ratio of collision cross section, Ar/He b) The ratio of thermal conduction coefficient, KAr/KHe c) The ratio of diffusion coefficient, DAr/DHe.