Intro Definition and 547 Threads

I'm looking for a book that can introduce me to the essentials in regards to Cosmology, Astronomy, and perhaps even Astrophysics. I don't necessarily want a book that is "cutting edge" or junk science. I am looking for an introduction to an understanding of space-time, general relativity, and...

For example what is the difference between an intro mechanics or E&M course and an intermediate level one? What about an advanced one that you would take in grad school?

1. A discussion of binary strings and strings over arbitrary alphabets 2. A discussion of generating functions and bivariate (or multivariate) generating functions, and their applications to enumeration and and probability problems 3. Graphs and Trees (does not need to be that thorough for this...

I am taking an introductory course in differential geometry this semester and I want to try and sketch my knowledge so far. We are using the book "Elementary topics in differential geometry" by Thorpe, which from what I have read, provides a fairly unusual treatment. I am looking for...

webassign even my ta's didn't know what to do... ?... and I am in intro to physics Homework Statement A 33 ohm resistor is made from a coil of Cu wire whose total mass is 12g. (a)What is the diameter of the wire and (b) how long is it ? ( give you answer in m) Homework Equations one...

Im just starting real analysis and trying to get my mind to start thinking the right way to do these kind of proofs. Any hints would be appreciated. Homework Statement Prove: If |X| is infinite, then |N| <= |X| where N = natural numbers The Attempt at a SolutionI figure you can start by...

Homework Statement Find a one-to-one correspondence between the binary strings (i.e. sequences of 0's and 1's) of length k that have an odd number of 1's, and those that have an even number of 1's. Homework Equations The Attempt at a Solution I'm not exactly sure of what it's...

This http://www.nytimes.com/2009/01/13/us/13physics.html?hp" is describing how, at many leading institutions in the US, there are revolutionary changes being made in how introductory physics courses are being taught to students, especially to non-physics majors. Zz.

Okay, here's a quantum mechanics problem. I am just starting with quantum, so I have no idea about this stuff. I am requesting guidence or a push in the right direction, not nessicarily a complete answer, please. Also, I don't know if this fits into the Advanced Physics help forum. I've never...

Hey folks, I need a good intro to statistics book that will take me through the 'statistics equivalent' of a Cal I, II and III course (US). One that starts with a good foundation, and proceeds up to a pretty advanced level. I have just finished a PhD in physics, so my math is 'good', but...

One is Spivak's book. What are other good ones which compare to it?

Homework Statement A billiard ball (ball 1) moving at 5.00 m/s strikes a stationary ball (ball 2) of the same mass. After the collision, Ball 1 moves at a speed of 4.35 m/s. Find the speed of ball 2 after collision Homework Equations Find speed The Attempt at a Solution...

Homework Statement Hi, I don't know if it's the appropriate forum to post this question... Basically I've been talking with a professor at my university (a professor that will evaluate me in less than 15 days) about a problem we had on a test and I must admit I got very stubborn (I hate me...

Homework Statement Prove or find counterexamples. For any sets A, B, C in a universe U: if A union C contained B union C then A contained B Homework Equations none. The Attempt at a Solution im just not sure if i did it right. id appreciate if you can check my work and let me...

Homework Statement find the integral of f(x) = x by finding a number A such that L(p,f) <= A <= U(p,f) for all partitions p of [0,1]. where a partition p of an interval [a,b] is of the form {x0,x1, ... , xn} Homework Equations L(p,f) is the lower sum of f with respect to the partition p. In...

The first edition for this book was a nice primer to GR for ppl like me who are far from mastering the advanced math required to in deep understanding of GR. Prof. Edwin F. Taylor now has a drop site for electronic drafts of the second edition of the book, improved and updated with new...

I feel like I am hopeless when it comes to calculus! I am having a very hard time wrapping my head around it and it is affecting my physics mark right now because I need to be able to integrate things and I don't know where to start. If someone could direct me to a link or another thread...

Homework Statement Let X = (xn) be a sequence of positive real numbers such that lim(xn+1 / xn) = L > 1. Show that X is not a bounded sqeuence and hence is not convergent. Homework Equations Definition of convergence states that for every epsilon > 0 there exist some natural...

Haha I tried to make it as neat as possible... Please help me , this isn't homework, but I just want to learn the steps so I'll be ready for my test in two weeks. I posted in this forum because when I posted it on the analysis part, they moved it to the Homework section for some reason. The blue...

The cell membrane in a nerve cell has a thickness of 0.12 micrometers. (a) Approximating the cell membrane as a parallel plate capacitor with a surface charge density of 5.9 x 10^(-6) C/m2, find the electric field within the membrane. (b) If the thickness of the membrane were doubled, would...

I am really having a hard time in this intro to real analysis class. I feel as if I'm the only one in class who isn't getting it. I have an extremely hard time thinking abstractly and constructing my own proofs. I know I need a lot of practice. Here is the problem we have to prove:Claim: Let A...

A figure showing electric field lines has two charges, q and -q. There are 24 lines emanating from the +q charge. 15 of these lines terminate at -q. There are 24 lines terminating at the q- charge. What is the net flux through the surface surrounding the two charges?

Hi all, I'm starting my second year at my uni pretty soon, and I'm trying to make a final decision about the classes that I'm going to take. I still haven't figured out what I want to do in future yet, but I'm thinking of along either academics (not necessarily math, but math is one of my...

Hello guys, I am someone who is interested in learning how to do a little bit of programming. Not anything big, but one thing that i was looking into that i think would be fun is trying to make a "poker bot." I don't need to know how to hide that I'm using one (for those of you that play online...

What are the harder topics in an calc based intro to probability class? I'm taking it in 3 weeks so I have time to prep. Here's the course layout:http://www.math.ucla.edu/ugrad/courses/math170ab/170Aoutline.shtml

What are the best up-to-date summary/ introduction articles to the current state of quantum gravity, for someone who knows some QFT and GR? Articles with formulas in it, but written in a more pedagogical tone. thanks

Homework Statement If n>4 is a composite number, show that n|(n-1)! Conclude that (n-1)! not congruent -1(mod n). (This shows that Wilson's theorem can be used as a proof of primality. It is unfortunately not practical for large numbers) Homework Equations The Attempt at a Solution I...

I have done the equation from this textbook, but I have no way to get the exact answers to confirm my answers. I really don't need to know how to get the answers. I just need answers to confirm them with. If you can show how to get it that is fine as well

Homework Statement I'm starting QFT and many books I've started to read start with the introduction of a field in a classical string model with a Lagrange equation L(q,\dot{q}) = \sum[\frac{m}{2}\dot{q}_{j}^{2}-\frac{k}{2}(q_{j}-q_{j+1})^{2}] the equation of motion becomes m...

I'm an undergrad currently studying in a community college and I'm majoring in ChemE. I'm stuck on whether to take an Intro to Engineering class that my school offers. Has anyone ever taken a class similar to this and can you say that you've benefitted from it? Unfortunately, I won't receive any...

My background is calculus through differential equations and linear algebra at a community college. How hard is an intro to probability theory at a school like UCLA?http://www.math.ucla.edu/ugrad/courses/math170ab/170Aoutline.shtml I'm thinking about taking it this fall.

Can anyone recommend the best introductory resources for physics. resources for someone who has just started to learn the basics would be good.

In chapter 4, Kittel is setting up the differential equations for the forces involved in lattice vibrations. I understand the concept, the only problem I'm running into is why he chose the solution he did. Here goes: He states that the differential equation is...

can someone give me some hints on studying chaos theory? like some introductory websites, good introductory texts, prerequisites for studying? edit how readable is "The Fractal Geometry of Nature" by mandlebrot?

Good intro to "cyclash" universe by Steinhardt There are a lot of cyclic theories of the universe----different ways a bounce could occur, or something like a bigbang occur repeatedly. Penrose just came up with a new one, as if there weren't enough already. Now Steinhardt is an outstanding...

Hello Physics forums! Im currently in Grade 10 learning the intro course on Chemistry. Can someone lead me to the right direction if I want to advance study for Grade 11 Chem? Please and thank you! :biggrin: EDIT: BTW Grade 10 Chem was just an intro course on different types of chemical...

I'm taking a C++ course and have just been introduced to the concept of linked lists and dynamic memory allocation. The following is from my notes: //ListP.h: List ADT using Linked List typedef int ListItemType; class List { public: List(); ~List(); // ...

Hi everyone, I was wondering what you all recommend for studying/reviewing Introductory University Chemistry. I heard good things about the Silberberg textbooks, while I used Zumdahl at my school. So I was wondering, do you all think that Silberberg is better or should I maybe study a bit...

I am doing a long report on an experiment on the Velocity of Sound through various gases, and I am doing the historical context part of the introduction section. The experiment itself was to find the velocity of sound through different gases, and also to calculate from this the dimensionless...

Homework Statement Identify and sketch the curve represented by the parametric equations: x=1+cost y=1+sin^2t Homework Equations The Attempt at a Solution I have to isolate t in one of these equations and sub whatever t equals into the other equation right? So how do I get rid of the...

So I'm waving a hello to all of you here *waves*. I'm in the Rocky Mountain region, an INTP/J, and interested in physics since an early age without knowing it. I also love to draw and design graphics, if you're interested in looking at my gallery online just reply to this. I'm into...

The courses called "Introductory Linear Algebra & Differential Equations" are potentially diluted too much in order to form into a one-semester course; the one which often follows the third semester of Calculus. This becomes a terminal Math course for students who will usually not go further...

Homework Statement Ok, maybe I'm slow at grasping this, but why is the potential energy U of an electron while it is tunneling through a 1 dimensional potential barrier of height V0 = V0? Homework Equations Schrodinger equation in 1D (using semiclassical approximation) The Attempt...

I've lost track of this book. It must be 15 years old by now. But I really want to find it. Too bad I don't even remember what it's called - except that I'm sure it had the name molecules in it. This book was an intro to many of the common molecules we encounter in our lives. It started off...

1. (a) Write a formula for the number in terms of the perimeter L and the area A of a circle. (b) Write the differential for your answer in part (a). (c) Suppose that L and A are determined experimentally. Write the resulting relative error in using your answer in part (b). 3...

Hey, Does anyone have a recommendation for a good intro to differential equations? The book I'm using now (Guterman & Nitecki) is pretty bad. I'm looking for lots of examples, practice problems, and hopefully answers. Thanks!

keep in mind this problem is on page 8 of my text (yes I'm already confused by the problem) and the ideal gas law was just introduced. problem: Estimate the average temperature of the air inside a hot air balloon. Assume that the total mass of the unfilled balloon and payload is 500kg. What...

Homework Statement A 2kg block, initially moving due east at 6m/s, is acted upon by an impulse having magnitude 4Ns and direction due west. What is the final velocity of the block? a) 8m/s west b) 4m/s west c) 4m/s east d) 8m/s east Homework Equations change in momentum = F*(time...

I'm just re-viewing one of my all time favourite TV series, "Twin Peaks"; I've always loved the intro: Let's be nostalgic and remind each other of other gems!

I'm new to programming languages in general and I discovered that engineering students at my university, of which I am one, have to take a first-year introductory course to programming in C. Apart from the fact that I'm clueless as to where to start, I'm looking for a good text which I can...