Recent content by Chele

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    How much work is done on a gas?

    Thank you...obviously I was looking at the meanings incorrectly. The answer is W=4390 Joules. The way you worded your answer actually helps me with yet another problem I was having! Have a great day!
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    How much work is done on a gas?

    First of all...thanks for any help. This is ultrabasic introduction to therm, so I know everyone says that no question is stupid, but I just feel like I'm really missing the boat here. Homework Statement The temperature of a monatomic ideal gas remains constant during a process in which 4390...
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    Calculate the rms speed of free electrons

    That's what I get for trying to do homework at 330am. Thanks, I can't believe I missed that. Thanks for the information, I'll check those out!
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    Calculate the rms speed of free electrons

    Hi and thanks for checking this out! :) Homework Statement The temperature and pressure in a star's atmosphere are 1.20E6 K and 0.0400 Pa. Calculate the rms speed of free electrons (mass = 9.11 10-31 kg) there. Homework Equations What am I doing wrong and why do they give the...
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    Integrate: Power of cos is even and non-negative

    Umm...you know what...you are absolutely right. Cos and sin are odd and positive. I work midnight shift and I posted it after not having sleep for quite some time. As for the even powers, I'm moving on to that homework tonight. Again, appreciate the help. This place is a gold mine of...
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    Integrate: Power of cos is even and non-negative

    Thanks for the help... It's all new to me!
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    Integrate: Power of cos is even and non-negative

    Duh...got it...I think. Okay, thanks. It took a moment for it to sink in. When I substituted to try to get the two answers to equal up, I got \frac{1}{4} - \frac{1}{4} cos^{4}x I see now that the extra \frac{1}{4} is just part of the constant of integration. If that is a correct...
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    Integrate: Power of cos is even and non-negative

    I have to go to work, I'll try the substitution again. Maybe just bad algebra trying to substitute. I'll post later if I got it or not. Thanks.
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    Integrate: Power of cos is even and non-negative

    Thanks...I was able to get the book's answer, however...what is wrong with my solution?
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    Integrate: Power of cos is even and non-negative

    First off, thanks for your help. I feel like a dope because everything I'm doing looks correct to me, but my answer is not the same as the book or solution manual gives! I'm usually so good at finding my mistakes. Thanks for taking the time to help. Homework Statement...
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    Uniform Circular Motion: Centripital Acceleration vs. Acceleration

    Okay, thanks. I worked it out and it is exactly the same. Not sure why I didn't see it before. Thanks guys!
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    Uniform Circular Motion: Centripital Acceleration vs. Acceleration

    Wow- I'll need to look at that in further detail... Thanks for your help!
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    Uniform Circular Motion: Centripital Acceleration vs. Acceleration

    I am very new to physics and am taking a my first University Physics class. This is not a call for a problem to be solved, but a clarification on terminology. In solving problems for uniform circular motion, some problems call for the acceleration of the object (a=v^2/r) and others the...
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    Is RateMyProfessors a Reliable Source for Evaluating Professors?

    I've used this sight to rate my professors in the past and have always been very honest. I'm an A student, so I don't have any reason to trash a teacher because of a bad grade. Here are two of my most recent reviews: From between being allowed "cheat sheets" with formulas to being able...
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    Programs Should You Pursue a Physics PhD? Advice from Brian Schwartz

    I'm following this quite carefully because I am at a crossroads myself as to major in mathematics or in physics. In the physics department at my college, "nearly all" of the full-time graduate students receive full financial support. However, I'm wondering what I could do with it. I plan to...
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