Suggestions Definition and 484 Threads

Hello I am trying to solve this ODE dx/dt=(f(x)+g(t))^(1/2) I have been recalling what I learn in my ODE course and looking at my old textbook but I did not find what method is appropiate to try...any suggestions? Thank you very much!

I'm starting to do some research into what grad schools I should apply to this fall for a pure math PhD. I'll be finishing my undergrad in May 2015 with a major in math and minor in physics. I'm not 100% sure what area I want to go in to, but I'm leaning more towards the topology and geometry...

I hope that the title is a bit better than my last one... I would appreciate any input on items I have made or will be demonstrating as it should be about 30 minutes long and a balanced programme. Background... I am in training as an Assistant Beaver Leader in my Sons Beaver cubs scout pack...

Thank you for anything you can offer. We've got a plasma globe which we can tie into talking about solar and interstellar plasma, and we have a few Galileoscopes, but we don't really have anything else astronomy-themed. I've been thinking, but haven't come up with many ideas. One idea I did...

Hi guys, I am going to get a shot to perform a short experiment of my choosing with an FTIR device. Do you have any suggestions/seen any interesting things I could use it for? (Please keep in mind my knowledge in FTIR in very limited so I would really appreciate interesting suggestions which...

So my numerical analysis class requires me perform iterations involving huge expressions into my strictly NON-graphical scientific calculator. It often happens so that my current calculator (CASIO fx-911ES PLUS) does not allow me to feed in it a expression which goes beyond its input memory...

Hello I'm currently first year mechanical engineering student and I have some spare time. I want to take on a project of some sorts that would be interesting and maybe relevant to my degree or general theme of engineering. I was wondering if anyone could suggest or recommend something and maybe...

Hi everyone, new poster here. I'm a chemist who's in a little over my head with an electrical engineering problem, and I'm hoping someone here might have some advice. The short version (details to follow) is that my experimental setup has a photomultiplier tube (PMT) detector whose output has...

G'day all, I'm a 50-year-old ex-hardware pseudo-engineer. I had 2 years of electronics training back in the early 80s, but since then I've been completely self-taught. I was sharp enough to be offered a position at Hewlett-Packard, in instrument repair, although I was the only team member...

I am a undergraduate student now and I have joined in a project in my college. I was assigned a job to simulate the deformation of an elastic membrane given the boundary and the exerted forces on it. It seems to be a homework problem and quite fundamental, but I really have spent much time on it...

I am helping my son (who is a junior) begin researching colleges. He has always planned to go into engineering, but is now leaning toward majoring in physics. He knows he will need to get a masters degree, and probably a Phd at some point if he stays in physics. When he was looking at...

Hi y'all, I am new to the physics forums. I really like Astronomy and Physics. This is a sort of a homework question but I couldn't find the right category to put it in. I have an english paper due soon and I need to find a topic. The paper is supposed to be about a controversial issue. I've...

:cry::cry: i am studying in 12th standard.till now i don't even have a single friend.whenever i try to talk with my classmates,they always try to ignore me.i always try to be kind.i also have a sense of humour but they pay less attention to my cliche humour.though they act like friends they...

As a high school student, I enjoy studying mathematics on my spare time. Having recently worked through a textbook on vector calculus, I am in need of a textbook that will give me a solid introduction to differential equations. Any suggestions will help my search; however, I would prefer a...

I am a physicist who is interested in acoustic guitar design (additionally I make custom made guitars and violins). The problem I have is in acoustic guitar design, for simplicity imagine a box 20"X15"X3" (length, width, depth). On one of the 20X15 surfaces (the top) cut a 3" hold 1/3 from...

The Canon MP560 all-in-one printer that I bought in January 2010 just died on me, I think. When I turn it on, it comes up with a B200 error which seems to mean the print head has gotten fried. The instructions I've seen for clearing that error all start with removing the ink tanks, but I can't...

Hey everyone, I was hoping I could get some input on this. I'm taking an honors section of Calculus I this semester, and part of the course involves a cumulative honors project. It has to be a minimum 8 page paper, at least a third of which has to be actual calculations, about a topic that...

I have an absolute love for chemistry particleurly analytical and organic. my problem is I'm not the greatest when it comes to math as i never was granted the opertunity for higher level math classes in grad school. I'm the first in my family to actually graduate high school. I tested into math...

Hi all, First of all to give a background about myself I am having a bachelors in Electronics and Comm Engineering from India with 2+ years of experience in control systems, embedded systems and vlsi. I would like to pursue my masters in applied physics and would like to go for either...

I'm a senior in high school and dislike the way physics is taught. I find the textbooks to be too watered down and lacking in mathematical rigor. My plan is to major in physics when I go to college, so I've decided to self study physics in my spare time. I've browsed around the forums here...

I am reading Spivak, Calculus on manifolds, and I have a basic working knowledge of topology through Mendelson, "Introduction to Topology", I want to learn more about differential geometry, especially co variant derivatives, levi-civita connections, Ricci and Rieman curvature tensors. I know...

The college I am currently in has started with Differential Calculus. Due to some reasons I haven't been able to attend the lectures. The current book assigned to us is of no help. The book only shows the solved problems on the topic with very less introduction and no geometrical meaning. I...

Hello all, I am an applied math/physics major who wishes to land on a finance-related jobs (including insurance) with a bachelor's degree. The coursework includes ODEs, PDEs, Calculus of Variations, Numerical Analysis, etc., with three faculty elective courses. Here is a list of courses that I...

Hey everyone, I just started College Physics(algebra/trig based) a couple weeks ago, and I'm quickly realizing that my textbook is horrible. It barely even really explains any of the concepts, and the ways that equations are being derived are completely different from the way that my professor...

Hi, can anyone tell me about the quality of undergraduate physics programs at the following universities? Wright State University. (Dayton Ohio) Miami University Oxford. University of Cincinnati. To give a little background info I am over 40 and going to college for the first time. I...

any suggestions for books/authors which contain these topics. Fundamental Concepts Of Mathematics Algebra of sets and logic; methods of proof; functions and relations; logical nature and structure of mathematics; introduction to number-theory; algebra arid geometry of complex numbers

Where I work, we use a single acting hydraulic cylinder to raise a tank filled with sludge. After emptying it, it has to be brought back to it's original horizontal postion. This is done using the weight of the cylinder and takes a lot of time (about 15-20 mins). Can you suggest something to...

Hi everyone, I was wondering if you guys could suggest me some good books in cosmology with finely explained WKB method and Perturbations especially in Structure formation area. I have "The early universe" by Klob and Turner and "Cosmology" by Weinberg , but they seem unpalatable at first...

As the topic says! Anyone read a good books lately that were related to physics/mathematics? I'm thinking history books, or things of that sort. I've recently finished reading "Black Hole Wars," by Leonard Susskind. I liked it quite a lot. It was a very nice mixture of history, anecdote, and...

Suggestions for Analytic Geometry books; What do you have in mind?:)

what calculus book/author can you recommend for an electrical engineering student?

Let a be a nonzero number and m and n be integers. Prove the following equality. a^(m+n)=a^(m)a^(n) Im not really sure what direction to go in. I am not sure if I need to show for n positive and negative separately or is there an easier way. My attempt/ideas: When n>0: a^(m)a^(n)=...

what college algebra ebooks can you recommend, with exercises that are quite challenging. because i have some college algebra ebooks, but i find the exercises there not intellectually stimulating.( I'm asking about college algebra that are taught in undergraduate programs).

Hey guys,I am sure I am going to get some of the same guys on my last thread so, hey! I love the 20watt audio circuit with the lm1875 and will eventually pcb it for sure! This is another audio questions, but not like last time. So I want to make a small portable radio/boom box. I mean to...

I am a sophomore applied mathematics major and would like to teach myself some physics. I can I would like suggestions on a good book on intermediate mechanics. I have looked up the pre-reqs at my college and I have already have taken those classes. I would like a book that has worked out...

Hi all, I have been researching conductive glass in my quest to create a solar powered 3D printer :) :). So, I have contacted a few manufacturers in china who sell ITO glass, but it is still a little pricey, and I was wondering what the forums thoughts are on making my own ITO glass. I have...

In short, I completed my first year as a physics major and have off for the summer. As such, I wanted to dedicate some time to studying but am not sure what should be prioritized. I am currently studying for the GRE, keeping up with my calculus, studying Spanish (foreign language requirement)...

I have dabbled in trig doing physics and understand enough to do simple problems with the 6 trig functions but next spring ill be taking trig and I am wanting to get a good self teaching book. does anyone have any suggestions for one. I would like to get one that has at least plenty of examples...

As the title says, I'm looking for an approachable upper division mechanics book. I'm starting my upper division come fall, and want to get a head start on this course. Sone background: I've taken the traditional mechanics, E&M, and modern physics (light, waves, intro to relativity and...

Hello everyone! It won't be long before I'll take my degree in theoretical Physics and then I'll have to apply for a Ph.D. I'd like to work on some fundamental Physics. The problem I have to face is that I actually know (almost) nothing about contemporary physics and so I don't have the...

Hey does anyone have any good suggestions for an experiment for both of these topics momentum and friction? Because I'm currently doing a physics investigated research task that's about if you go a KM over or mile over it is worse. so i need to do some investigating that links the two topics to...

I have always been irritated that I don't really know how and why a computer works. I would like to change that now and need book suggestions. The text has to be as thorough as possible. I don't want descriptive books for a layman. I need scientific textbooks. If you know a good book please...

Hi everyone, I want to learn about micro-controllers especially PIC. My priorities are below: 1) I want to learn how a circuit is built. What are the logics to add capacitors, resistors, transistors etc. ? 2) How can the required capacity for capacitors or resistances of resistors be...

I am looking for an alloy which has its protons in a randomized spin state? I.e. not affected by gravity. Any suggestions? Thank you.

Someone asked me which math topics to study in order to learn quantum information theory. I thought it was a good question, so here's my answer. Warning: this is off the top of my head, so it probably needs additions and/or corrections. Most of this advice applies to anyone doing quantum...

Hey everybody, I have built a 7' wind tunnel. The test section is 7''x7'' and 24" long. The diffuser opens to 22''. I would like to achieve around 30mph through the test section. I am having trouble finding a fan that can meet that need. I have looked into using an electronic radiator...

I am currently compiling, solving, and adding complexities to problems involving strings in physics. The scope of my work covers basically everything: from introductory physics to string theory. I'm looking for any suggestions for problems and any way to add complexities to a given problem...

I am a high school student who is extremely passionate about physics. As part of the IB program, I need to pick a question and write an extended essay by next September using about 40 hours to write approximately 4,000 words. I chose physics for my subject area, and would appreciate some...

Hey all, I'm looking for a good introductory book (I've had Physics 1 and 2, some thermo and modern) on plasmas because I will be doing research this summer in plasma physics. I have heard Francis Chen's "Introduction to Plasma Physics" is a good start. Any reviews on this book?

Hi, I am writing my (undergraduate) research thesis on accelerator/particle/neutrino physics. I'm planning on writing about the history of this field (HEP) and what such research has tried to accomplish. Currently, I'm looking for some books to read up on the history and such of HEP...