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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediuminteger

A gas expands adiabatically and its volume doubles while its absolute temperature drops 1.32 times. What number of degrees of freedom do the gas molecules have?

Answer:

Solution:

$T V^{γ - 1} = constant$ gives $2^{γ - 1} = 1.32$ , so $γ - 1 = \frac{ln 1.32}{ln 2} = 0.40$ and $γ = 1.4$ . With $γ = 1 + \frac{2}{f}$ , $f = 5$ .

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermodynamics Laws & Specific Heats of Gases

⏱ 2mℹ️ Source: QB

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