Recent content by danman5000

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    Why Doesn't Paper Catch Fire When Dipped in Ethanol?

    I think people are making this out to be way more complicated than it is. The ethanol burns first partially because it can vaporize and better mix with air, and partially because it coats the paper. Ethanol rapidly evaporates, and it's much easier to ignite as a gas than as a liquid as it's...
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    Calculate velocity of an oobject falling trhough a medium

    Since you are looking for a velocity, you wouldn't end with a dimensionless number. It would need to be in meters/second (or whatever distance/time measure you are using). To do problems like this, consider all the different forces and the directions they are acting in. Then, use the sum of...
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    Can a Teenage Engineering Society Change the Future of Science and Engineering?

    Not to sound like a jerk, but I'd suggest spelling the name of your site correctly if you want to spred the word effectively and show that you're a serious group. Creating a society where people of similar interests can get together and do what they enjoy doing is a great idea, especially in...
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    Preventing Oxidation of Gallium in Metal Alloy

    Yeah that's what I'm trying to avoid, unfortunately. I'd like to find another metal that I could add as a component in the alloy itself that would stop any oxidation from occurring, sort of like how zinc galvanizing stops iron from rusting.
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    Preventing Oxidation of Gallium in Metal Alloy

    Hello! I just registered on these forums and this is my first post here, so hopefully I did everything right. I recently got into metalworking in my spare time, and I am trying to create a metal alloy that will remain liquid at room temperature (a fusible, eutectic alloy). From what I've...
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