Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKinetic Theory of Gases and Gas LawsMedium2 minQB

PhysicsMediumsingle choice

A room of volume $V$ at atmospheric pressure $p_{0}$ is cooled from $T_{1}$ to $T_{2}$ ( $T_{2} < T_{1}$ ). The mass of air of molar mass $M$ that enters the room is:

Options:

Answer:

Solution:

The room is open, so $m = \frac{p _{0} V M}{RT}$ . The mass

entering is

$m_{2} - m_{1} = \frac{p _{0} M V}{R} (\frac{1}{T _{2}} - \frac{1}{T _{1}})$ ,

positive since $T_{2} < T_{1}$ . A.

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

⏱ 2mℹ️ Source: QB

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