Recent content by Sondra

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    Finding work done & temp change by looking at a plot

    Homework Statement Refer to plot attached. Homework Equations (a)Find the work done by a monatomic ideal gas as it expands from point A to point C along the path shown in the figure. (The horizontal axis is marked in increments of 25 m3.) (b) If the temperature of the gas is 215 K at point A...
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    Net Entropy Change in Heat Engine Cycle

    So yeah I understand the Sh is negative that is why i subtracted it from the positive Sc. Is my equation incorrect?
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    Net Entropy Change in Heat Engine Cycle

    The correct answer is not zero :/
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    Net Entropy Change in Heat Engine Cycle

    So the hot reservoir has a net (-) charge because it's energy is absorbed. The net change in the cold is (+) because work is being put into the system and needs to be exhausted..? I am not exactly sure of how a "cycle" would influence the entropy unless it is referring to a reversible engine.
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    Net Entropy Change in Heat Engine Cycle

    Homework Statement A heat engine operates between a high-temperature reservoir at 634 K and a low-temperature reservoir at 320 K. In one cycle, the engine absorbs 6540 J of heat from the high-temperature reservoir and does 2200 J of work. Homework Equations What is the magnitude of the net...
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    Convert Change in Temp from Celsius to Fahrenheit

    Homework Statement Consider the apparatus that Joule used in his experiments on the mechanical equivalent of heat, shown in the figure below. Suppose both blocks have a mass of 0.69 kg and that they fall through a distance of 0.45 m. Homework Equations (a) Find the expected rise in temperature...