advanced Definition and 536 Threads

A while ago, Wheeler and Feynman published a cornerstone paper Interaction with the Absorber as the Mechanism of Radiation Rev. Mod. Phys. 17, 157 - 181 (1945) Briefly, there are two EM waves associated with accelerated charged particle, advanced and retarded waves. According common...

http://www.geocities.com/asdfasdf23135/advcal18.JPG Well, I don't get the idea of the proof at all... I have no clue why they can let U be an open ball. Not all open sets are balls, and if they let U be an open ball, it doesn't not seem to me that the proof has covered ALL possibilities of...

1. If set A is compact, show that f(A) is compact. Is the converse true? Ans. f:M to N is continuous and A subset M is compact. Then f(A) is compact. The converse is not necessarilly true. For Ex: F(x)=0 for every x in R(real #'s) and k={0}. Then f^-1(k)=R is not compact. 2. If...

Hi, I just finished up a B.A. in Physics at UVa, but I had some major holes in my curriculum. I took Modern physics, QM, and then GR, but never took E&M and Stat. Mech. Aside from MIT OCW, are there universities that offer advanced physics online courses for grade so I can patch these classes up...

Homework Statement a rectangular flat plate wing is considered for an aircraft.the aircraft needs to take off and land on a 1500 m long sea level runway and to cruise supersonically at mach no 2.5 at 8000 m altitude.assume aircraft weighs 16500kgf and max thrust of aircraft at sea level is 1/3...

what are some"advanced" physics of formula one? I have a 15 minute presentation regarding the physics of formula one race cars. My teacher told me not to include any of the physics we've covered in class(grade 11). stuff we've talked about are velocity, acceleration, Newton's law, g force...

Goodevening, I am confused with Venn diagrams questions(2/3 circle diagrams). Can i find some online resources which explains its concepts(including advanced concepts). Eg. 3circled(A,B,C) diagram is there. Find minimum/max. possible of ONLY A such that B is minimum/maximum - how to do these...

A bacteria doubles every 15h find when it will be at 1/16th of its present amount. not sure if there were more stuff stated but that's basically the jist of it. i'm assuming y=b(2)^(x/15) is the doubling equation not so sure how to solve it was going to just put in times 1/16 for the...

Hello all, As I've mentioned elsewhere, I'm currently in the last semester of a coursework masters degree(which i don't consider as a true postgraduate degree) in electrical engineering. my recent academic circumstances have rekindled my hitherto dormant interest in pure physics and mathematics...

what's a good book to segue from a calc sequence to upper level proof based classes? i need something that presumes nothing about my mathematical reasoning abilities, like i don't even know how to do proof by induction.

Doing well in 2nd year but math is killing me. I've never been exposed to a course that is so theoretical. Its a multivariable course which emphasizes theorems and proofs. The proofs are a pain to work through, but I do understand the majority of them after several re-reads. I think there is...

Does someone know a site with Sakurai (Advanced QM) solved problems? Thanks in advance, Leticia

Advanced Molecular Biology - HELP NEEDED! I am currently enrolled in an advanced Molecular Biology course and we have been assigned the task of creating a novel (not yet proved or studied) hypothesis regarding something related to the course. Additionally, we are required to provide an...

I am currently taking Advanced Linear Algebra the course description is as follows: A Mat 424 Advanced Linear Algebra (3) Duality, quadratic forms, inner product spaces, and similarity theory of linear transformations. Prerequisite(s): A Mat 220 Can anyone recommend a good book and/or...

Homework Statement Diff eq z*z(double dot) + z(dot)^2 - gz = 0. The dots are derivatives with respect to time. Initial condition z(0)=z(not) Homework Equations The Attempt at a Solution This is part of a larger advanced dynamics problem, where I am asked to get the velocity (z...

As part of my Advanced Higher Physics course I am require to investigate an area of physics not covered by the syllabus. My first thought was to use telron tubes or similar in order to determine the charge to mass ratio of an electron. However it has just come to my attention that this has in...

It seems that I've dropped the ball somewhat in preparing myself for a graduate degree in physics. This is my last year as an undergraduate and I have no research experience at all. I wasn't accepted to any of the summer REUs for which I applied (didn't apply to as many programs as I should...

I am interested in taking multivariable calculus (MAT237) at UT but need to know if I have the necessary knowledge to succeed in it. I have taken only "Calculus for Life Sci" (MAT135) but achieved a high A in it. The course covers everything from contunity to infinite series, but omits mostly...

This is a long shot, but does anyone own both the 8th and 9th edition of "Advanced Engineering Mathematics" by Erwin Kreyszig? I own the 8th edition that I used in a previous course, but another class I'm taking this semester is using the 9th of the book. Does anyone know if there is much...

I wonder if anyone here knows any DERIVATIVE or differentiation book such as “Exercises in Integration” by Claude George, Springer-Verlag. Any advance would be appreciated. Actually, I am looking for MORE techniques, manipulations, etc, on INTEGRATION and DERIVATIVE that could not be found on...

Dear All, I would like to introduce this website; http://www.imodelit.com" . imodelit.com portal is an online library of device modeling tools for electrical engineers. It offers unique solution to satisfy the initial design steps of optical and microwave components. imodelit.com main goal...

Hi is there any books you can recommend for advanced engineering mathematics for ComE? if yes please post the link... And what's it all about maths in computer engineering?? or are they similar to any advanced math in engineering?

i really don't know how to prove that the following are equivalent:

Hi All, I'm a student trainee at the public utilities at where I live. I have been given a task to find information about septic tank design and advanced oxidation. I have exhausted all resources at my library and also the online library. I searched online and found the same redundant...

If a man's wife says she doesn't mind if he pleasures himself with artificial devices made for the purpose of sexual activity, but she does tell him not to be unfaithful by having sexual relations with another living creature, then at what point should she detest the idea of him having sexual...

The premise of the last book in a trilogy by Asimov deals with the ethical and moral question "Is it murder when a highly advanced robot is completely destroyed by a human or another robot"? from: http://www.answers.com/robots%20of%20dawn The "Robots of Dawn" is the last in a trilogy by...

Does anyone have any good suggestions for a QM book at the advanced undergrad level? I am interested in particular about the QM formulation using density matrices as states and POVM's as measurements. I am an engineering student, so my math background isn't too strong beyond the basic linear...

I found the area of this triangle to be 56.4 (to 3sf) easily but i can't work out the length of CX. any ideas?

I'll get right to it. I've been looking for a Calculus based Physics textbook to self-study over summer, so far I've already taken an algebraic based AP Physics course (this book: https://www.amazon.com/dp/0136119719/?tag=pfamazon01-20 But I didn't like Giancoli's book a whole lot, it...

I have fond memories of playing educational games back when I was young (~10 years ago), like Mutanoid Math Challenge, Operation Neptune, Gazillionaire, and so on. They had these wacky, colorful premises like facing off in a math contest against weird-looking aliens so that Earth wouldn't get...

I am a older student that would like to go back to college and take higher level mathematics. I want to teach myself geometry, trig, and Pre-calc before i go back. Could anyboby recommend a book, tutoring software, or website that can help accomplisc this task.

someone is puchsing a box across a floor at a constant velocity. The coefficient of kinetic friction is .41. THe pushing force is directed downward at an angle below the horizontal. If the angle is greater then a certain value then no matter the force the box can not be moved. What is this...

Hi, I'm taking calculus this sem, and i have a question on stuff pre calculus. If x and y are natural numbers and y[less-than]x, then whole numbers q and r must exist such that x=yq+r. a)what is the value of r if y is a factor of x? IT IS ZERO b)If y is not a factor of x, what are the...

Hello, I am currently taking an advanced calculus class and the textbook is "Advanced Calulus" By Folland. This textbook is interesting because it goes deep into every subject treated, but at the same time I HATE it because it is very thin compared to the material treated: ie everything is...

I have been asked to help out with an experiment at the Advanced Photon Source here in the US. As I understand it, there will be several experiments taking place several weeks apart from one another. I will be up there for only about 4-5 days each time. There is even a possibility (though I'm...

Prove that a is a cluster point of E if and only if the set (E intersection (a-r,a+r))\{a} is nonempty for each r > 0. I have the forward implication done but the backwards implication is giving me some trouble. Could you explain it to me.

Here is the problem Let f be differentiable on (0,infinity) if the limit as x approaches infinity f'(x) f(x) both exist are finite prove that limit as x approaches infitity f'(x)=0. I have trouble proving this problem I was told to use Mean Value Theorem to find a contridiction. However...

I'm looking for a book/paper/online source where the following formula is shown to be true: \frac d{dt} \int_{a(t)}^{b(t)} f(t,\tau)d\tau =\int_{a(t)}^{b(t)} \frac {\partial f(t,\tau)}{\partial t} d\tau\,+\, \frac {da(t)}{dt}f(t,a(t))\,-\, \frac {db(t)}{dt}f(t,b(t)) I know one should post...

Hi, I'm getting to the end of my final undergraduate course on quantum mechanics, which basically covered time dependent/independent perturbation theory and the fine structure of atoms. As I still have some time until graduate school, I'd like to continue studying quantum mechanics on my own...

http://img136.imageshack.us/img136/6353/mechanicsau9.jpg I have this question for my WebAssign and I am not sure what to do with it. I thoght about how to use the X1 and X2 to get delta r but I really have no idea where to start. Please help! Much appreciated

Hello my name is Dan, I am a high school junior and had an idea i need some help with. I am currently designing a sports drink for myself and my fellow cross country runners. I am planning on making a flavor, hypothetically lemonade first, then via multivitamin supplements, powder, and soft...

Er... wow! The whole lecture, available for free! http://arxiv.org/abs/quant-ph/0608140 Zz.

Advanced Momentum Question -- need help The Question A bomb initially at rest on a smooth, horizontal surface explodes into 3 pieces. Two pieces fly across the surface at a 60 degree angle to each other: a 2.0 kg at 20 m/s and a 3.0 kg piece at 12 m/s. The 3rd pieces flys across the surface...

The subject came up in another thread. http://www.niac.usra.edu/ http://www.niac.usra.edu/files/library/misc/ What they have funded. http://www.niac.usra.edu/files/library/misc/Overview_for_AIAA_TC.pdf Highlights of CP 01-02 (from Overview_for_AIAA_TC.pdf)

What are some of the obstacles faced in creating prosthetic limbs that are actually controlled by your brain, just like your real limbs are? I always thought how interesting it would be to actually have a artificial limb that works just like, or better than a biological limb. Do we not know...

I'm having issues seeing the method to go with this problem. Here it is: Suppose that X is a linear space of dimension n, and E = {e1,...,en}, F = {f1,...,fn} are two bases of X. Prove that there is a unique invertible n*n matrix [sij] such that if a vector x belonging to X (I don't know how...

I'm a high school senior preparing for the AP Calculus AB exam. The school I am attending for college awards credit (placement) for both Calc 1 and 2, if I receive a score of a 5 on the exam, meaning I would begin taking multivariable calculus (i think tis their equiv of calc 3 course)...

I'm reading Advanced Calculus by Wilfred Kaplan 1952. He is demonstrating how to find the decomposition of the acceleration vector into its normal and tangential components. I'm following along until he replaces the magnitude of the derivative of the angle with respect to the distance traveled...

Well there isn't a topic on Linux tutorials, that I could find, so here's one - Linux Advanced Routing & Traffic Control HOWTO http://www.tldp.org/HOWTO/Adv-Routing-HOWTO/index.html Hope some find it useful. Please add others.

whats the role of advanced math in a ordinary person' life directly? does it make a big change in ur life wether u know advanced math or not?