Ch 21: The Second Law of ThermodynamicsWorksheetSee all chapters
All Chapters
Ch 01: Units & Vectors
Ch 02: 1D Motion (Kinematics)
Ch 03: 2D Motion (Projectile Motion)
Ch 04: Intro to Forces (Dynamics)
Ch 05: Friction, Inclines, Systems
Ch 06: Centripetal Forces & Gravitation
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Ch 19: Kinetic Theory of Ideal Gasses
Ch 20: The First Law of Thermodynamics
Ch 21: The Second Law of Thermodynamics
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Ch 35: Particle-Wave Duality
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Ch 38: Quantum Mechanics

Solution: An engine uses hydrogen undergoing a cycle with the following steps:i) Isothermal compression from V0 to 0.5V0ii) Isobaric expansion until the volume returns to the initial volumeiii) Isochoric coolin

Problem

An engine uses hydrogen undergoing a cycle with the following steps:

i) Isothermal compression from V0 to 0.5V0

ii) Isobaric expansion until the volume returns to the initial volume

iii) Isochoric cooling until the pressure returns to the inital pressure

What is the thermal efficiency of this engine? How does it compare to the efficiency of a Carnot engine operating between the maximum and minimum temperatures of the cycle? Note: for an isothermal expansion from Vi to Vf, W=nRT*ln(Vi/Vf)