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Sketch a PV diagram and calculate the work done by the gas during the following stages.
(a) A gas is expanded from a volume of 1.0 L to 3.4 L at a fix pressure of 3.1 atm.
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(b) The gas is then cooled at constant volume until the pressure falls to 1.9 atm.
(c) The gas is then compressed at a constant pressure of 1.9 atm from a volume of 3.4 L to 1.0 L. (Note: Be careful of signs.)
(d) The gas is heated until its pressure increases from1.9 atm to 3.1 atm at a fix volume.
(e) Calculate the net work done during the complete cycle.
Consider a simple RC circuit (a power supply, capacitor andresistor) in series. If you add a parallel branch, to the R and C,that only contains another resistor, what happens to the time constant?
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