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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediuminteger

An ideal gas with adiabatic exponent 1.4 is expanded adiabatically. By what factor must the volume increase to reduce the rms speed of its molecules to half? Give the factor (nearest integer).

Answer:

Solution:

$T$ falls to $\frac{1}{4}$ . $T V^{0.4} = constant$ gives $V_{2} = V_{1} \times 4^{\frac{1}{0.4}} = V_{1} \times 32.0$ , about 32 times.

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

⏱ 2mℹ️ Source: QB

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