Recent content by Rulesby

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    Relationship between valence electrons and electron configuration

    Why is it that atoms must have 8 valence electrons in order to be stable? Aren't electrons most stable when the orbital is completely filled? Helium's electron configuration is 1s^2, Neon's is 1s^2 2s^2 2p^6, etc. All the noble gases, except for helium, have the p orbital filled. I'm...
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    Deriving the Energy-Momentum Formula

    Nevermind, I found the solution. https://www.physicsforums.com/showthread.php?t=64683
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    Deriving the Energy-Momentum Formula

    Homework Statement Show that the energy-momentum relationship, E^2 = p^2 * c^2 + (m*c^2)^2, follows from the expressions E = (gamma)*m*c and p = (gamma)*m*u where (gamma) = 1 / sqrt(1 - (u^2)/(c^2)) the lorentz transformation factor. m is the rest mass. c is the speed of light u is the...
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    B.A. or B.S. in Physics: Which is Better for Grad School in MS&E?

    Yeah, i live in the United States. I'm planing to transfer to the UC or CSU system. The way I've been taught how these colleges work in tandem with the California Community Colleges (which I am currently attending), is this. A person in a CCC must go on assist.org to make sure that you are...
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    B.A. or B.S. in Physics: Which is Better for Grad School in MS&E?

    I'm an undergrad getting ready to transfer as a junior from a 2-year college to a 4-year college. My declared major is physics, but I want to go to grad school under an MS&E program. Should I go for a B.A. in physics? My reasoning is that it would allow me to take more chemistry and engineering...
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    Unit Normal always pointing toward concave side

    Physically/conceptually, I understand why the unit normal vector will always point toward the side of concavity on a curve. It's because the unit normal's direction is the derivative of the unit tangent, and the unit tangent's change in direction is always toward the concave side. But how is...
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