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IB Physics HL B 4 11 Hl Heat Engine Cycles Questions

Interpret HL heat-engine cycles on P–V diagrams, using enclosed area, net work, heat transfer and cycle direction to compare engine performance.

Syllabus
First assessment 2025
Course
Physics HL
Level
HL

Exam points

  • Relate angular impulse to change in angular momentum, ΔL = τΔt.
  • Calculate angular impulse, torque or angular-momentum change from complete rotational evidence.

IB Physics HL B 4 11 Hl Heat Engine Cycles Questions question 1

[Maximum number: 1]

The pressure-volume diagram shows a 3-stage cyclic process of 0.20 moles of an ideal gas in a closed container. A-B is an isothermal process. C-A is an adiabatic process.

Figure for Question IB Physics HL B 4 11 Hl Heat Engine Cycles Questions question 1 — IB Physics HL

The following data are available:

 Pressure at A=2.0×106 Pa Volume at A=1.0×10−3 m3 Pressure at B=2.0×105 Pa Volume at B=1.0×10−2 m3\begin{aligned} \text { Pressure at } A & =2.0 \times 10^{6} \mathrm{~Pa} \\ \text { Volume at } A & =1.0 \times 10^{-3} \mathrm{~m}^{3} \\ \text { Pressure at } B & =2.0 \times 10^{5} \mathrm{~Pa} \\ \text { Volume at } B & =1.0 \times 10^{-2} \mathrm{~m}^{3} \end{aligned}

Outline why this cycle can be used for a heat engine.

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