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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKinetic Theory of Gases and Gas LawsHard2 minQB

PhysicsHardsingle choice

Air pressure and density are related by $\frac{p}{ρ ^{n}} = constant$ with $n = 1.2$ at all heights. Take $M = 0.029$ kg/mol and $g = 9.8$ m/ $s^{2}$ . The temperature gradient is nearest to:

Options:

Answer:

Solution:

$\frac{d T}{d h} = - \frac{M g ( n - 1 )}{n R} = - \frac{0.029 \times 9.8 \times 0.2}{1.2 \times 8.314} = - 5.70 \times 1 0^{- 3}$ K/m = $- 5.7$ K/km. B.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Kinetic Theory of Gases and Gas Laws

⏱ 2mℹ️ Source: QB

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