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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediumnumerical

One mole of helium in a thermally insulated vessel moves with constant speed $v_{0}$ and is then suddenly stopped. The gas temperature rises by 0.5 K. Find $v_{0}$ in m $s^{- 1}$ (molar mass 0.004 kg).

Answer:

55.80

Solution:

$\frac{1}{2} M v_{0}^{2} = \frac{3}{2} R Δ T$ , so $v_{0} = \frac{3 R Δ T}{M} = \frac{3 \times 8.314 \times 0.5}{0.004} = 55.8$ m $s^{- 1}$ .

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

⏱ 2mℹ️ Source: QB

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