Recent content by _DJ_british_?

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    What causes rotation, a couple or a moment? (conceptual)

    In words, it's because you apply a force "on" the COM ie. linear acceleration, but a the same time, you apply a torque about the COM ie. rotational acceleration (unless the force is applied directly on the COM, then it's just linear).
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    Can the laws of physics be violated?

    Then do a google search first.
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    Delta Dirac: Showing it's a Distribution

    The set of set of test functions is a vector space. The reals are are also a vector space. Use that for linearity. Test functions are smooth, use that for continuity.
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    Courses Real analysis and Integration course for EE

    If you've never took an Analysis class, I STRONGLY recommends against taking a course on Integration. At my school, this class is the last of of the undergrad 4 classes Analysis sequence, which means it requires a lot of Analysis background and mathematical maturity ie. definitely not something...
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    Do all forces have an associated particle?Is there theorized to be

    All forces have an associated theorized particle. Inertia is not a force.
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    First and second laws of thermodynamics

    Basically, the first law state that energy is conserved and the second law state that there exists a "potential function for work" ie. d(work)/temperature is an exact differential. That's a dumb guy explanation of the 1st and 2nd law...that might help. The way I understand it, those laws are...
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    How Can a High School Senior Start Learning Quantum Physics on a Budget?

    A friend of mine once said : "Introductory QM is just Fourier analysis vomiting on a page." It's funny so I thought I'd share... In other words : study some Fourier stuff!
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    Applied Functional Analysis by Zeidler

    Yeah, that's what I thought, but then the set is not convex...funny thing is, the next question is to show that the set with u(a)=1 is also open, convex and dense...which it is not. Oh well.
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    Applied Functional Analysis by Zeidler

    "Applied Functional Analysis" by Zeidler In my book, "Applied Functional Analysis" by Zeidler, there's a question in the first chapter which, unless I got my concept of density wrong, I can't seem to see true : Let X=C[a,b] be the space of continuous functions on [a,b] with maximum norm. Then...
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    Term ground mean in an ELECTRONIC circuit?

    Has Cepheid said, the ground, in theoretical circuits (it might not be true in real life, but you should't bother about this now!), is where you put the voltage to zero (i.e. since you only want voltage difference, it's a specified point where V=0).
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    Upper-level Books for Theoretical Physics: Lie Group & Functional Analysis

    Hi everyone, I'm a Physics student and I'm planning to go to grad school in theoretical physics (I'm still in my first year so things may change but oh well) My question is twofold: 1. Any good book on Lie group and its application to physics, for someone with no formal course in group...
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    Which is a better preperation for grad work?

    I'm currently in the Honours Physics program at Mcgill, but 3 of my best best friends are at the school you just mentioned (two are at UoT and one is at Waterloo). We talk several times a week, either by phone or by mails. From what I get from them, the education is pretty much the same. I seems...
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    Post your Winter and Spring 2011 schedules here

    Signal Processing Honours Classical Mechanics II Honours Complex Variables Honours Applied Linear Algebra Honours Differential Geometry
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    Struggling with Pre-Calc After Acing Calc I?

    Fact is, your teacher really don't believe you will remember all these formulas. They want you to know about them enought so that when you'll encounter a problem using them, you'll remember that you have seen them before and know where to find them (book, internet and such). Most of the time...
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    Reading Haaser-Sullivan's Real Analysis

    That's what I thought, thanks! I haven't touched the formal definition of differentiability, but in Calculus I learned that a function was differentiable on [a,b] iff its derivative exists on [a,b]. So the condition stated above is enough to show differentiability on [a,b] and thus, continuity...
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