Class Definition and 909 Threads

  1. B

    Will graduate admission committees consider my retaken classes for grad school?

    but you decide to retake those classes to replace the failing grade. you decide you want to attend graduate school.t will graduate admission committees take only the grade that replaced the failing grade into account or will the graduate committees count both the failing grade and the grade that...
  2. russ_watters

    News Is the Middle Class Truly Disappearing?

    I don't mean quite what you think by that (how could I?). But I've never seen such a raw statement of the current Democratic sales pitch than today when I saw a bumper sticker on a Toyota Highlander that said "I'm too poor to vote Republican." Obviously, there are several ways to take this...
  3. U

    Spring Semester - Help W/ Class Choice

    I'll have to take a class next semester as a junior level EE that I'm not really looking forward to. The reason is because of the professor. He is a nice guy to talk to, but as far as teaching, he is the worst. It is one of the most common known facts at my school. I had him for a class this...
  4. S

    Help with arithmetic in calc class please

    Given the approximate values: ln(2)=0.7 and ln(10)=2.3 Use these approximations and an indirect argument using only arithmetic to explain how many decimal digits to expect in the number 2^40 and how do you know your correct? Well i know that we'll know if we are correct based on the decimal...
  5. M

    Recommendation on good Analysis textbook to supplement class

    Just a quick question for those who have had plenty of exposure to Analysis. Currently, I'm in an Analysis class. We are using Arthur Mattuck's "Introduction to Analysis" textbook. While I think it's a good book and I enjoy the class, I can't help to think that the teacher is watering down...
  6. M

    Counting Equivalent Classes in Arbitrary Groups

    Is it possible to know how many equivalent class has an arbitrary group?
  7. J

    Which Differential Equations Class Should I Take for Transfer Credit?

    In my school according to my degree I require to take "Differential Equations and Linear Algebra" class but, there is another class called "Differential Equations". I am planning to transfer the next year to another school but, I don´t know which class of these two to take in order to get...
  8. D

    Resonance (Differential Equations Class)

    [SOLVED] Resonance (Differential Equations Class) Homework Statement A front-loading washing machine is mounted on a thick rubber pad that acts like a spring; the weight W = mg (with g = 9.8 m/s^2) of the machine depresses the pad exactly 0.38 cm. When its rotor spins at \omega radians per...
  9. D

    Understanding class A & B amplifiers

    I have read some texts myself but the explanations i read still leave me some queries. Below I have copied some text from wiki. From the text is in bold and my queries are in italic. Can someone please help me with my understanding, THANKS! Class A amplifiers are the usual means of...
  10. T

    I'm looking for a replacement textbook for the one given to me in class

    I'm in AP Physics right now (currently studying energy - not sure what category that falls into. Mechanics?) and I've found my textbook to be less helpful than what I thought it would be. So I'm considering investing in a new one that I could get off ebay/amazon, and the price really doesn't...
  11. S

    C/C++ Creating a Class in C++ 2005: Debug Report Error Analysis

    I am using C++ 2005 and trying to create a new class I believe I wrote my program correctly but when I gry to build I get an error back here is my debug report 1> _Elem=char, 1> _Traits=std::char_traits<char> 1> ] 1> while trying to match the argument...
  12. D

    Undergrad Deciding to Take a Class: Is It Worth It?

    Is it worth it that I take it as a class? I'm a last year undergraduate.
  13. P

    Why do so many professors just do proofs in class?

    All my classes are just profs doing proofs. Great. Too bad the tests requires us to use what we prove to calculate something. For example, my prof spent the first two lectures proving cross and dot product identities (the ones found on the inside covers of many math or physics books). Why...
  14. P

    Help with College Physics 5th Ed. for High School AP Physics Class

    Hi, i need help with my high school ap physics class. I'm using the college physics fifth edition book. Also are there any guides that can help me with the class with that book as the guideline. thanks
  15. G

    Choosing a committee from a class

    Homework Statement How many ways can a 5-member committee be chosen from a class with34 students? Homework Equations The Attempt at a Solution Using the formula from the book, I did 34! / (34-5)! and I got 33,390,720. This gives me the same answer as doing 34*33*32*31*30, but...
  16. F

    Basic QM - Trying to catch up in a class

    I haven't taken one of the recommended courses for a class I am in, so I'm playing a little catch-up here. Q: The wave function of an electron in a one-dimensional infinite square well of width a,x -> (0,a) at time t=0 is given by: \psi (x,0) \sqrt{\frac{2}{7}}\psi_1(x) +...
  17. M

    Looking for the name of a class of ODE:

    Homework Statement M(x,y)y^{'}(x) + N(x,y) = 0 There exists: \phi(x,y) Such that \frac{\partial\phi(x,y)}{\partial x}=N(x,y) \frac{\partial\phi(x,y)}{\partial y}=M(x,y) I'm not looking for a solution to anything particular to this but I can't find the type in my notes and I can't google it...
  18. N

    Programs Going to Cornell Next year and need some class advice (Physics Major)

    Yeah, so I don't know how difficult I should take classes. I have a 5 on Phys Mechanics and E&M AP tests, as well as a 4 on the BC Calc Test (5 AB Subscore). These can get me the highest possible placements. Do you think I should place into a 200 level class in Physics, or should I...
  19. M

    Comp Sci  C++ How to declare/initialize a constant in a class?

    Homework Statement I have my computer science exam today (in 2 hours). I want to know how to declare and initialize a const member in a class. The Attempt at a Solution I tried this: _________________________________________________________________ class stu { const int a=10...
  20. H

    Derivatives in my calculus class

    I am on my second day of derivatives in my calculus class (I am taking it over the summer) and I was wondering if there is a check that you can preform to see if your answer is correct? I do some questions and I think I got it right but I am just never sure if I have made an arithmatic error or...
  21. S

    Best Classes for Math & Science Career: A High Schooler's Guide

    I am currently a high school student that has a desire to go into a mathematical and scientific career. I was wondering what future classes would benefit me the most in helping me achieve this goal. Here is a outline of the classes I have taken so far. High School Freshman - Physical Science...
  22. D

    Finding the Median with Class Scores

    If I am given a frequency table, but instead of set scores, i am given classes, or a range of scores. So for example: 20-29 | 11 30-39 | 12 40-49 | 2 etc. If asked to find the median of the set of data, should i give the midpoint of the class containing the median score, or should i...
  23. D

    Build a robot for physics class

    Ok, so I am spose to build a robot for physics class as the last project. Me and my friends thought we should build a RC car with an LED heart on the top. THe problem is we are in need of direction. Does anybody know what is needed and what needs to be done to build a small RC car? If so please...
  24. A

    Our class has only completed ~50% of the Physics B Curriculum

    Our class has only completed ~50% of the Physics B Curriculum! We have done everything except the following: Fluid Mechanics and Thermal Physics, Waves and Optics, and Atomic and Nuclear Physics. We are currently working on Waves and Sound and will probably only be done with optics before the...
  25. Math Is Hard

    Mentioning RSS feeds in my class

    They keep mentioning RSS feeds in my class (we've just started learning XML) but have never really explained what they are and why they are useful/interesting/cool/whatever. Could someone tell me a little bit about them and suggest where I might go to look at one? Thanks.
  26. B

    Best in class will always find good work

    There is a lot of fear and worry on here about colleges, grad school, work, career prospects. If you aim to be, and are, in the top handful of students in every class and exam you take, there should never be any worries. Anxiety and lack of career prospects come when you are not good enough, or...
  27. MathematicalPhysicist

    What Does It Mean to Get a First Class in the UK?

    my question is what it means to get a first class honours in britain? is it that your average will stand above 95 percent, above 90 percent? what does it mean?
  28. B

    Integration questions for my astoronomy class

    Hi, I have to do a lot of integration questions for my astoronomy class but I'm not really sure how to! for example how do u integrate from a number let's say a = 0, to a = 1/(1+z)... and dt = \frac{da}{H_0 \left(\frac{\Omega_{m,0}}{a} + a^2 \Omega_{\Lambda,0}\right)^{\frac{1}{2}}} I've done...
  29. JasonRox

    Trouble understanding the path-homotopy equivalence class

    Ok, I'm having trouble understanding the path-homotopy equivalence class. It's kind of blurry when they apply the operation... [f]*[g] = [f*g] ...where [f] is the path-homotopy equivalence class of f. I can see that an element in [f]*[g] is in [f*g], but not the other way around. For...
  30. T

    Dislike my Lab class: semicon. circuits

    I'm currently enrolled in a lab class about circuits. we are doing diodes, transistors, op-amps these days. the thing is, I've never taken any circuit analysis before, but the prof. expects us to be able to understand op-amp, diodes, transistors... and be able to calculate quantities for...
  31. D

    Engineering Nodal Analysis For Circuits class

    Homework Statement Hi guys, I solved this problem out. I'm just curious as to see if my work is valid. I strongly believe it is, but perhaps you can help me. I do have a quick question... once I've found all the voltages at specific nodes, I_o is the difference of the voltage / resistance...
  32. Math Is Hard

    Help with C++ Container Class: Troubleshooting w/ VS C++ 6 & .NET 2003

    C++ container class help Hi, I'm working on a templated container class called "bag" and running into some trouble. This my header file, bagTemplate.h #ifndef BAGTEMPLATE_H #define BAGTEMPLATE_H template <typename T> class bag { public: bag(int num=10); // construct a bag to hold...
  33. Math Is Hard

    Comp Sci Fixing C++ Card Class Errors in Visual C++ 6

    Hi. I am working on an assignment writing the implementation for a class of playing cards. http://www.pic.ucla.edu/~nathan/cgi-bin/moin.cgi/la1#head-111d7fc9df65f327018fa94234ab0b23c0857e98 Here is the header file that we were provided. //filename card.h #ifndef CARD_H #define CARD_H...
  34. J

    C/C++ Debugging My Matrix Class Implementation

    Hey all! I'm new here. I actually joined for physics help a couple of days ago, but I found the answer by searching through old threads and didn't have to post a new one. So here's my first post. :smile: Anyway, so I procrastinated on my homework, and now I'm having trouble with it and no...
  35. L

    I want to audit a class in reletivity, but

    I want to audit a class in relativity at my school. The relativity professor's name is Dr. Wolfgang Rindler. I am aware that he is writer of many books. However, I don't have a chance to get a hold with his work. Have anyone had any experience with his work? I don't want to interrupt classes by...
  36. G

    Olympic Class Runner: Race Time & Acceleration

    1. Careful measurements have been made of Olympic sprinters in the 100 meter dash. A simple but reasonably accurate model is that a sprinter accelerates at 3.8 m/s2 for 3.26 s, then runs at constant velocity to the finish line. (a) What is the race time for a sprinter who follows this model...
  37. R

    Proof: (Pigeon Hole Principle) from a Problem Solving Class

    Homework Statement Prove that THEIR EXISTS INTEGERS a,b,c NOT ALL 0 AND EACH OF ABSOLUTE VALUE <10^6 SUCH THAT |a + sqrt(2)*b + cuberoot(3)*c| < 10^-11 Homework Equations |a + sqrt(2)*b + cuberoot(3)*c| < 10^-11 The Attempt at a Solution Well, I know that we have to use...
  38. E

    I'm trying to recall my M.E. materials science class

    I studied mechanical engineering at UCSD for my sophomore and junior years after transferring in from being a math major at Pomona College (east of LA). One thing I remember is that we talked about the material composition of steel. It has a crystal lattice such that the carbon atoms fill in...
  39. K

    A question in my electric engineering class

    [img=http://img214.imageshack.us/img214/9254/untitledqqag4.th.jpg] it's a question given in the sample exam I think for the first question, there is not much we can do to recover the function x(t), because it gets squared ... for the second part, sampling rate needs to be greater than...
  40. P

    Are Physicists a class of Metaphysicians?

    Could physicists be considered as metaphysicians who attempt to get to the nature of reality with the help of mathematics? We notice a lot of conflict with the physical intepretation of different theories and even different interpretations about the same theory. I know some physicists might be...
  41. I

    AP Bio Struggles: Is 86% Normal?

    No one in my AP Bio class has an A. Not a single person. The highest we've gotten yet is an 86%, and that's from the girl who studies three hours every day. Is this normal? We're nearing the end of the semester, and yet most of the class has Cs and Ds. It's the teacher's first year teaching AP...
  42. J

    Online Physics Class: Links & Resources

    online physics class?? I'm trying to find an online calculus based physics class. Any links would greatly appreciated.
  43. U

    Prof teaches Statistical thermodynamics in a Classical Thermodynamics class

    I'm just finishing up a "Classical Thermodynamics" class. Here is a list of topics we covered: Chapter 1: Ideal gas, equipartition of energy, heat and work, heat capacities, rates of processes Chapter 2: Multiplicity of an Einstein solid, of an ideal gas, of interacting systems Chapter 3...
  44. E

    Where Can I Find Resources for My Photonics Band Gaps Final Project?

    I need some advice for where to start my project which is about Photonics band gaps. I need to write a 10 pages paper on this subject. I am sure I will be asked a lot about the subject which won't even be in my paper so I need to learn about it as much as I can. But,unfortunatelly I don't know...
  45. P

    Working out a Second Class Constraint in Gory detail?

    Hello, I've been fooling around with some equations, and I've managed to land a second class constraint (I don't know whether to laugh or cry). Well, I was wondering is there any good introduction to the subject? The problem I have is that I made the conjugate momentum a function of...
  46. M

    Ideas for a Basic RLC Related Class Project

    I've been a lurker for a longtime (and recently made an account). That aside, I've just started my sophomore level classes in electrical engineering this year (in college obviously), and my instructor has asked us at the last minute to make a simple project involving an RLC network (so...
  47. K

    Preparing for Physics: Where to Start?

    Hi there, I have a Physics Intro class next semester and I know nothing about Physics. Is there a book, website, video...anything! that can help me prepare for this Physics course? I want to do well in it and I am willing to learn it. Any suggestions?
  48. T

    Confused by my modern physics class

    My lecturer is currently addressing modern physics. "we" (more like "he") solved the schrodinger equation for hydrogen, and then into all the quantized angular momentum, intrinsic momentum... now we are into quantum statistics... Seriously, I have absolutely no idea what my professor is...
  49. S

    Class A amplifiers formulae help

    HI guys! well! i have got a question with me. Some forumlae i know and some i dont! please help me in solving it. There is a single stage class A amplifier which has Vcc =20V Vceq = 10V Icq = 600 mA RL = 16ohms Ip=300mA. We have to find: 1) DC Input Power 2) DC Power Loss in...
  50. M

    Class average 56%, 34% of the people got 40% or lower, what does this mean?

    Hello everyone. I was wondering if this is normal to have class averages this low. This professor seems like he's out to fail everyone. We just got back our mid-term and the class average was a 56%, and 34% of the students 77 of them got a 40% or lower on the exam. I managed to pull off a...
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