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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediuminteger

A gas goes through a cyclic process drawn as an ellipse on a $P$ - $V$ diagram with semi-axes 5 L along the volume axis and 20 kPa along the pressure axis. Find the net heat absorbed per cycle in joules (nearest integer).

Answer:

314

Solution:

Net heat equals net work, which equals the area of the ellipse: $πab = π \times (5 \times 1 0^{- 3} m^{3}) \times (2 \times 1 0^{4} Pa) = 100 π = 314.2$ J, about 314 J.

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

⏱ 2mℹ️ Source: QB

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