Recent content by dan28029

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    Why Can Volume Be Used Instead of Specific Volume in PV Diagrams?

    Thanks for the responses. Good to know I'm not crazy. In the reference material for the fundamentals of engineering exam, the formula also does not include mass. I guess its a typo. Maybe that's where the author of the presentation got the formula from. I think it is to differentiate...
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    Why Can Volume Be Used Instead of Specific Volume in PV Diagrams?

    1. Problem Statement The problem asks to find the net work from one complete cycle A-B-C. Problem 13, starting on page 66 of the slide show here: https://engineering.purdue.edu/~xe/Files/FE%20Review/Thermo/FEThermoReview2013.pdf Homework Equations ideal gas law: PV=mRT Boyle's Law...
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    Pressure, energy density, and power of a fluid flow

    I've read that you can view static pressure of a fluid as energy density, which makes sense to me. I've also seen that the power of a fluid flow can be calculated by multiplying the pressure by the volumetric flow rate. However, doesn't a flow also have kinetic energy? How can you calculate the...
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    Impact force of an object dropped on a steel toed shoe

    Actually, now that I looked at the specification myself, I see that the shoes are rated up to 70 FOOT lbs. That makes more sense to me
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    Impact force of an object dropped on a steel toed shoe

    I often hear about collisions in terms of impact force. For instance, "the boxer delivered a punch with 100 lbs of force." I have a pair of steel toed shoes that are rated to withstand 70 lbs of force (311 N). But if the shoe experiences an impact instead of being loaded very gradually, wouldn't...
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