Recent content by Electric Red

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    My College Physics book is horrible. Suggestions for supplements?

    I could be wrong, but that book looks good to me. I looked at some pages and I seemed pretty clear to me. But I think this isn't the response you wanted to hear..
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    Undergrad Force of attraction between two bar magnets

    Does this answer your question? Force beteween two bar magnets
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    Magnetic Field (Hollow Copper Pipe)

    Looks like your answer are correct.
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    Alternatives to Intro Physics Physics for Scientists -Jewett

    Maybe you could consider looking at "University Physics" Young Freedman. But it's hard to tell wheter that's too difficult or not. It has got a lot of exercises with answers, solution manuals are also availible with the complete calculation of the answers.
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    Particle physics, special relativity, quantum mechanics

    We have a topic concerning which books you can/need to read in order to understand those topics. PF Library - Physics and Math Information Database - Physics Forums Library
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    Undergrad Can Rotational Dynamics be derived from Translational Dynamics?

    Hm.. if I am correct, the formulas rotational dynamics can be derived from translational dynamics. But, I don't think you can solve certain problems without understanding the concept of torque. Maybe these help you: Torque with Examples...
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    Undergrad Question about gravitational potential energy

    You are talking about a potential energy of 53 KW, energy is measured in Joules, not in Joules per second, which is W. And if I understand your question correct, yes most of the energy gets converted into mechanical energy but there will also be a not neglible amount of heat after the...
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    Graduate Atomic Vibration in Einstein & Debye Models

    Well, the Debye model differs a little from the model of Einstein. At low temperatures, the Debye model is more accurate than that of Einstein. But to fully answer your question, just take a look at this: Debye model - Wikipedia, the free encyclopedia Hope this helps you, otherwise just...
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    Undergrad Force on wire by earth's mag. field

    Hello, well as you say, you understand what to do. You indeed need to use F=BIL, since B_{effective} is Bsin(70-20), B_{effective} is 50μTsin(50) Putting in the correct values give the correct answer of 1.9 N Your approach seems a bit odd, you use two times sin(70), I can't figure out which...
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    Undergrad Moment of intertia of a cuboid

    It is very important that you check every step that I take, try to understand what I do. Think of a cuboid like this one: The shape with sides A and B is a quarter of the whole shape with sides C and D. The column with sides a and b is very narrow, where a and b tend to go to zero. The...
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    Graduate Atomic Vibration in Einstein & Debye Models

    Sorry, I do not completely understand what your question is. Could you say that again?
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    The solution to cos x = 2 or any number > 1

    Watch out with your calculations, to keep them clear for yourself and others. But, your values for x are indeed correct.
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    Studying Required books and knowledge to take physics GRE.

    This question has been answered a lot of times if I'm correct, just perform a little search on the website.
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    Undergrad Does triple integrals have to have a specific interval?

    Next time it is better to put things in LaTeX, read the FAQ for that, that would be a lot easier te read. But, to answer your question, as long as you define the boundaries of your integrals correct, you should get the same answer. So if you get an different answer after changing from dxdydz to...
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    How do I rearrange and integrate dx/dt=k(a-x)(b-x) in order to graph x and t?

    Hey jhast1, I tried solving your equation, and when you say "Integrating dx using partial fractions: 1/(b-a)×(ln((a-x)/(b-x))=kt+c" I've got something which looks more like: \frac{ln(x-a)-ln(x-b)}{(a-b)}=kt But maybe I just made a mistake..