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C10-11WebLab2

C10-11WebLab2 - The first is done for you as an example...

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Chapters 10-11 WebLab#1 “An Engine Cycle” * Go to the following website: http://www.shermanlab.com/xmwang/javappl/ottoCyc.html * Observe the motion of the piston. The piston moves up and down, squishing the gas (the colored area) in the chamber. Observe the graph as it is drawn. Note the terms used to describe each segment of the graph. Questions: 1) Based on what you see in the simulation, what does “isobaric” mean? 2) Based on what you see in the simulation, what does “isochoric” mean? 3) According to the ideal gas law, the temperature of the gas is proportional to the product of the pressure and the volume. For simplicity, let’s assume that the temperature is equal to the product of the pressure and the volume: T = PV . Estimate the temperature at each of the following points in the cycle.
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Unformatted text preview: The first is done for you as an example. Beginning of adiabatic compression: P = __0.2__ V = __8 __ T = PV = __1.6 __ Beginning of isochoric heating: P = ______ V = _____ T = PV = ______ Beginning of adiabatic expansion: P = ______ V = _____ T = PV = ______ Beginning of isochoric cooling: P = ______ V = _____ T = PV = ______ 4) The word “adiabatic” means that no heat enters or leaves the gas. Does the temperature of the gas change during an adiabatic process? If so, and the heat doesn’t enter or leave, where does the heat energy go? 5) Why does the piston move during the compression? 6) Why does the piston move during the expansion? 7) Which is larger, the energy associated with compressing the gas or the energy associated with the expansion of the gas? Why?...
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