Class Definition and 942 Threads

This is sort of a two part question, so bear with me. I just recently graduated with a BS in chemistry, and I applied to a couple PhD programs for next fall (I deliberately waited until after graduating to apply to graduate school for a number of reasons!). I'm working a part time job right...

I'll try to be as abstract as possible, but where needed, I'll give some concrete examples. If you have any questions, please ask. Note, I'm doing this for my hobby, not for any sort of homework. I've only followed an introductory course on computational complexity, so I'll let that be my...

I can think of at least one negative thing about having a physics final exam worth 60% of the overall grade. Namely, you can perform well year-round only to receive a bad case of test anxiety when it matters most. I just took such an exam, and am now almost certainly (>95% chance) going to fail...

We have this problem for math class: For an interval of 45 minutes, the tsunamis near Hawaii caused by the chilean earthquake of 1960 could be modeled by the equation y= 8 sin (pi/6)t, where y is in feet and t is in minutes. a) find the amplitude and period of the waves b) If the...

what do you learn in an astronomy class, considering taking one , this is not at a university, but at a junior college. Just curious about what topics are covered.

I am a junior in physics. Things have been going pretty good (not flawlessly super) so far, with the exception of one class: upper level mechanics. I just cannot perform at a sufficient level and I don't know why. We just took a midterm a few weeks ago, one which I studied pretty hard for...

What is better to possibly get a C in a class or just drop it and retake it after I transfer somewhere else? I have a really bad Linear Algebra course that is taught by an inept instructor who is well "past his prime." Complemented with a very obscure and difficult to understand book. I've...

hey, I am trying to pick 2 out of these 4 classes. I want to be a well rounded under grad math major. I am in my second year and have done 2 semesters of analysis, 1 abstract algebra, 1 number theory, 2 stats, 1 complex analysis. these are the choices I have narrowed my options down to. I am...

I'm trying to read a bit up on category theory, but I'm a bit confused about one aspect of the proof of Yoneda's lemma. Suppose we have a locally small category C, a functor F : C \to \textrm{Set} and an object A in C. Now according to Yoneda's lemma there exists a bijection from Nat(hom(A,-),F)...

Hello, I am trying to figure out whether I should take this class but I am not sure if I have the requirements for it. My school has a habit of setting the requirements bar low when the class might actually be difficult and need a lot of prior knowledge on the subject. It's called Axiomatic...

Part 1 - Question About Torque Of Lever Arm in a 1st Class Lever Homework Statement A little while back I posted a question about incorporating the torque of a uniform mass and dimension lever arm into the principle of a 1st class lever. Here is the thread for reference...

Hi, I am slowly realizing that for the first time in my college career I have a class that is very difficult to get my head around. Not so much in that I have trouble with the topic at hand, I actually find it quite interesting rather that it seems the class is just plain bad. 1. Our...

Hey all, Which of these do you feel would best support my Physics major? I've satisfied all other requirements for my math minor except for one elective. I was thinking Vector Calculus. I am also able (with approval) to take any of the 5000 level classes listed below. Any input is...

Question: public class Postman { private String Name; private int Age; } How you can update and retrieve the private variables Name and Age from another class Worker. public class Worker { //An object a is created from class Postman What i tried to do: //Postman.java public class...

I'm making a program for one of my programming classes and just needed some help! #include <iostream> #include <iomanip> using namespace std; int main() { int number; float feet; float metres; float conv1; float conv2; cout << "Do you wish to convert 1...

I'm just kind of curious how our school's E&M-I class compares to others because it seems like we are learning things at an advanced level (very fun though it can be intense). We started the year off with Special Relativity then went into Vectors; nothing weird yet. Then instead of doing...

This semester I found for a variety of reasons I generally prefer studying material in my classes on my own and with some online help, lectures, notes,etc. I am still in lower/middle undergrad material and I know this methodology won't work for higher level courses as well but is it ok that I am...

this is our last quiz on communication.. fortunately, the whole class got zero on this quiz so the professor arranged a retake and made it a take home exam instead.. this is my last hope on passing the course.. so any help would be greatly appreciated.. 1.A superheterodyne receiver having an...

I am doing a project of hydraulic vehicle. My professor ask our team to install a hydrualic pump and motor in the vehicle. We are considering to purchase a set of hydraulic pump and motor, and we have the following requirements: We have an existing electric motor of 22kW, 60Nm (continous)...

In my engineering class we are learning about finding the true length of a line. I don't understand it at all. We basically work with 2D views of a line in either the profile, front, or horizontal view. I don't understand how to get from one view to the next. Does anyone know of any good...

[b]1. Homework Statement I am suppose to use polar coordinate data to find derivatives, ie x = r cos(theta) y = r sin(theta) r^2 = x^2 + y^2 [b]2. Homework Equations show dtheta/dy = cos(theta)/r show dtheta/dx = -sin(theta)/r...

Hey all, Can anybody recommend any good books for a 3rd year quantum mechanics class? The recommended text is Quantum mechanics by Franz Mandl but on the reviews some ppl say it is very dry. I'm looking for a book with an informal style that i can read cover to cover like Griffiths...

I need some help for my grad Econometrics class. The book we are using (Woolridge, Introductory Econometrics), doesn't go quite as deep into the math as the lecture does. As a result, it is difficult for me to follow what's going on, even if I read ahead. If anyone could recommend a text that...

Arg, I just started in on 'real physics' and am taking mechanics this semester but the problem is I don't understand it. Our damn physics department recently transitioned to a new more interactive program, which to them means tossing out the textbook and giving us conceptual videos to watch...

Should I challenge my class with interesting puzzles, or drone on and crank out answers to standard problems? Any tips?

I'm applying for graduate schools (3 of them) and obviously I need to send my undergrad transcripts. But they do say all post secondary education. I took dual credit classes in High School that I got Longview community college credit and UMKC credit for. Do I need to list this these colleges in...

What to expect from my class "Theoretical Physics 1"? I'm starting my major in physics this fall and I'm taking multivariable calculus, mechanics, E & M, and theoretical physics 1. I pretty much know what to expect from the other 3. But I'm going into this class "theoretical physics"...

To those familiar with university structure, mine offers two different statistics courses (besides those that are offered to fields like soc. or bio. which are not open to non majors). One is offered by the statistics department, one by the math department. Is there a generalized difference...

1. This problem concerns a nonhomogeneous second order linear ODE L[y] = g(t). Suppose that: y1(t) satisfies the ODE with the initial conditions y(0)=1, y'(0) = 0, y2(t) satisfies the ODE with the initial conditions y(0)=0, y'(0) = 1, and y3(t) satisfies the ODE with the initial conditions...

Posted June 2024 - 15 years after starting this class. I have learned a whole lot. To get to the short course on making your stock car, late model, hobby stock E-mod handle, look at the index below. Read all posts on Roll Center, Jacking effect and Why does car drive straight to the wall when I...

Homework Statement y''+16y=9xe^(4x) y(0)=0 y'(0)=0 find the solution, y(x) to the differential equation The Attempt at a Solution I found the particular solution to the right side of the equation, which is correct, yp= .28125x-.0703125e^(4x) For the left hand side of the...

I graduated from school two years ago and I am planning on taking a course on electrodynamics this coming semester for personal interest. However, I am having problems registering for the class. I haven't strictly met the course's prerequisites. I meet the math side of things, but the course...

i have been on these last few problems since thursday of last week and I am still lost can someone help me with one through 5 1.Shareen finds that when she drives her motorboat upstream she can travel with a speed of only 8 m/s, while she moves with a speed of 12 m/s when she heads...

I am seeking the answer to the following question: Given a simple closed curve on a compact Riemannian surface(a compact surface with a Riemannian metric), whether there exists, in the homology class of this simple closed curve, a (single) closed curve which has the shortest length measured with...

Once again, this stupid university is frustrating me beyond all end. First, I had a death in the family and missed two crucial weeks of a class. They make exceptions for family deaths and I retook the class, but then they decided to make me submit 'proof' that someone who was like a parent to me...

Hello, I am a senior now. I have a B+ in one of my upper division physics classes. How can I still get into a good graduate program ? Its freaking me out.

Homework Statement Prove that if (a1, b1) ~ (a2, b2) and (c1, d1) ~ (c2, d2), then (a1, b1) + (c1, d1) ~ (a2, b2) + (c2, d2) and (a1, b1) \bullet (c1, d1) ~ (a2, b2)\bullet (c2, d2). Let [a, b] denote the equivalence class with respect to ~ of (a, b) in Z x (Z-{0}), and define Q to be the...

With the economy in the dumps, a lot of grad schools this year seemed to be taking significantly smaller than normal incoming class sizes (at least in math, where I was applying; for instance, I was told the University of Minnesota was taking on only 30% of their normal amount of incoming math...

so I failed cal 1 at my CC mostly because of personal problems going on in my life, but I am retaking the class and getting a solid A at the moment. I got into UCSC without sending in a transcript but will have to since i plan on attending. Will they withdraw their acceptance because of the...

Hello everyone, I am having a considerable amount of trouble in my high school geometry class... first let me explain. My teacher went on sabbatical last year and decided to make his own text. His text is alright, but lacks some explanation I feel, I need to SEE it done well before I can...

So hopefully next semester i'll start my TAship and I'm faced with the question that has probably faced every TA before me. Do i wear a toga school from now on? Maybe at least to the first week of lab or first day? Studies1 have shown that lecturer's wearing togas and other ancient clothing...

I want to take a statistical physics class next semester which requires that I take ODE first, and recommends that I have taken linear algebra as well. Since I will not be able to take ODE until 2 semesters from now, due to the physics-major version only being offered in the spring (i...

how can I calculate the distance something is above the earth? as an example a 1750 kg satellite orbits the earth. it has a gravitational potential energy of 1.69*10^10 J. Its free fall accel is 6.44 m/s^2 how high is it. How would I solve this? thanks.

I need the equation for Newtons to Joules. as an example the question is you must exert a force of 4.5 N on a book to slide it across the table, if you do 2.7 J of work in the process, how far have you moved the book. I am not looking for an answer just an equation to show how to do this, thanks

I'm a senior engineering major. I'm currently taking my general education requirements, particularly a theater class at the 200 level. Is it bad if I do a pass/fail grade instead of an actual letter grade? Would the graduate committee (for whichever school I apply to) even notice/care? I have...

Hi, everyone: I wonder if anyone knows the actual definition of having a surface represent a homology class. Sorry to bother with just a definition, but I have not been able to find one , neither in books nor online. I am reading that a certain surface represents H_2(M,Z) ...

hi, this is what I've got so far and what I'm wanting to do is add a char to the end(and eventually the beginning) of the string but i can't seem to get it to work, do you think I've got the right idea #include "string.h" #include <iostream> using namespace std; using namespace PC3762...

I am majoring in physics at school, and I am finally starting Physics 131 (classical calc-based physics) next semester. I am just finishing up my Calculus courses this summer. I would like to find a good book that I can read to get me started so I can have the best chances of doing well in...

i was wondering whether it was possible to have a class say Vec4(i,j,,k,n) and then being able to assign it as an int eg/ Vec4 A(i,j,k,1) = 1; does this make any sense?

I'm not going to blame anyone except for the fact that I'm probably a slow learner. Can somebody explain some of the things I'm learning in layman terms? That way I can have some context when I'm reading about them. Right now, the things I'm reading have no meaning, so it's really hard to...