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Hello all. I'm transferring from a Community College to a four year uni. I have a little time (maybe a semmester) before I need to declare a major. Right now it's between physics and mechanical engineering. If I only get a bachelor's, I'll do engineering. If I go the PhD route, I'll do physics...

Interesting question, but can you put "Spoiler Alert" in your title. Sorry if that's too picky, but I hate when I'm not given the option to not be spoiled on a movie/book/whatever.

If 2X=0, what is 20X?

The way I learned it: To solve |ax+b|>k, solve ax+b>k and ax+b<-k. (This is basically what you did.) Then I would plug test values into the original equation to see if it makes a true or false statement. You would use the intervals (-\infty,1);(1,2);(2,\infty). The values from those...

(Emphasis mine) That's all you have going for you? Hahaha! What more do you want? (By the way, you also speak English.) The fact that you don't need to worry about funding is a big plus in your favor. That will make things a lot easier for you. In addition to the GRE, you'll probably need...

I'm sorry. I disagree with the majority of people's responses. I don't understand discouraging the OP from reading faster. I have an idea of what you're going through OP, but your situation may not be as extreme as mine. For years I was the last kid in class to finish the reading. During...

Thanks for your input Highway. Yes, agreed. Like I said, I don't want to make a list. I would like to set it up in a narrative format. I've read that can be effective. I guess I'll brainstorm some "plots". Since there are no guidelines about length, I have no idea how long it should be. I...

I'm completing my transfer application to Towson University. The "essay prompt" is the following: I'd like to highlight the fact that I spent about six years teaching English in China. I learned a lot about the culture, I can speak (and read a bit) of Mandarin, I studied kung fu... Lots of...

Based on the name "Zhuhaolin", I assume the OP is from China. This post can be disregarded if that assumption is incorrect. Education in China is super competitive. If you do not do well on the math portion of your gaokao (university entrance exam), you will have little chance of getting into...

As already mentioned, the matter/antimatter bit is false. But there is a a kind of "light", rather it's radiation, that lingers from soon after the universe began. It's called the cosmic microwave background radiation, CMB.

That is great advice. I think a lot of people tend to miss these concepts when our more experienced peers pass them on. Thanks for taking the time to put all this in one post. Really helpful for those of us just getting started.

Thank you Mépris! I didn't know about those. Amherst Income based. https://www.amherst.edu/admission/financial_aid Vanderbilt Income based. http://admissions.vanderbilt.edu/expanded-aid-program.php Tufts includes loans in their aid packages. They are almost free. For some reason...

This is a list of schools with (some type of) full scholarship programs that offer majors in science and engineering. The programs vary from school to school, so see the individual school for the details. I'm sure this list isn't complete. These are just the schools I've come across from a...

You need to get treatment for your depression. Changing majors might make you feel better, but you will most likely still be depressed. Your major is secondary to your health. It will be hard to succeed in any venture when you don't feel your best. I've tried changing jobs, changing...

Tried to add more context where I quoted you. I didn't mean to imply you were talking about all engineers. I meant to highlight the idea that "being in it for the money" is somehow wrong. Again, this is not what I meant to imply. My point is that working for money is not bad. I have frequently...

Why do people say it this way? Is having money really so bad? Speaking as someone who has seen true poverty (I'm talking about sell your children for food poverty. Fighting over food waste poverty. *Real* poverty.), I don't think taking a job that allows one to take care of him/herself and...

I'm surprised to see so many people claiming that there is not really a bias against engineers. I think it's cool that you guys are in an environment that is more enlightened. Sadly, most of us aren't. That's not to say that these forums are anti-engineer. The more senior, more experienced...

Have you ever heard of match, reach, and safety schools? I've read 50% of your applications should be to match schools, with 25% going to reach, and 25% to safety. They key here is to apply to more than one school. When you apply, be sure to highlight your strengths. Undergrad doesn't just...

I'll second the suggestion about Math Tutor DVDs. I've found them to be pretty good. As a supplement to them you'll need some (a lot of) exercises. Those can be found in some of the places already mentioned. It's not enough to just understand the concepts, but you'll actually have to be able to...

Wait, what? I thought (-1)2=1. If \sqrt{1} doesn't have a negative solution, how can the solution to my original equation be negative? I'm lost now.

Thanks AJKing! I made a stupid mistake. \sqrt{1} should be \pm1. My failure to solve this problem makes much more sense now that you've pointed this out to me. I forgot the negative solution... I haven't run into a situation quite like this one before where only one of the solutions is a...

Homework Statement (5R2+11)1/2=-4R (It's actually written as a squareroot rather than being raised to the 1/2 power, but couldn't get latex to do it's thing.) Homework Equations None? The Attempt at a Solution I tried a couple different ways, none yeilding the correct answer...

Venting is good. It can be quite cathartic sometimes. I suggest talking to your adviser. You can also try talking to some of your professors if you feel comfortable doing so. Try to find out if you should choose a more appropriate topic of study for your current skill set. Find out what...

Quick follow up: The tutor took forever to meet with me. When she finally did, she just gave me a test and didn't bother talking to me. In the end she basically decided that it would be too much trouble to tutor me. With out time to find another tutor, I'm starting class on Monday. So the...

Thank you! Very clear explanation. I had a total "oooooh!" moment after reading this. In the past I had always put member definitions at the end of the class declaration. I like the MyClass.h and Myclass.cpp approach better. I'll definitely be adopting it. This is my main problem. I've...

I understand the concept of creating a new header file for a class (something like MyClass.h), but what's the point of creating a MyClass.cpp? http://www.codeblocks.org/" [Broken] creates both files for me when I add a new class to my project. I'm sure there's a good reason, I just don't know it...

Decided in the 1960s: http://www.bipm.org/en/CGPM/db/13/4/

That's not a bad idea at all. At the least they might be able to give me some tips to prepare for taking the Accuplacer again. Thanks!

Human babies can swim. Generally if an animal can do something without learning how to do it, we call that an instinct. Instincts come from evolution. So does it not stand to reason that swimming, an instinct, evolved in humans? Baby swimming: http://psycnet.apa.org/psycinfo/1940-01122-001...

Seconded.

Who says monkeys can't swim? Many people say apes cannot based on their distribution of body fat. If this is the case, it doesn't matter how smart they are. Swimming is not like riding a bike or driving a car. It is more like hunting (for other animals like the big cats). There is a learned...

Indeed. I appreciate the observation. There are so many other things out there to numb my mind, reality shows and such, that I should probably do my best to protect my brain. I suppose the worst case scenario is that I test into precalc and end up a little bit further than where I started.

Thanks for relaying your experience. I definitely don't want to take three classes/9 credits and spend 18 extra months in school if I don't have to. Just the idea is so discouraging. (But I would be willing to do it to complete my degree if I need to.) Hopefully I'm not overestimating my...

Thanks for your input Dembadon. I should have mentioned that I'll be aiming for a "friend's and family rate" for the tutoring. I also should have mentioned that I won't be eligble for student loands/grants until next semester, so I'll be paying for school and books out of pocket anyway. I think...

I'm planning on continuing my education after about a ten year break. I originally got an AAS in criminal justice. Then I left the country for a long time. Anyway, I'm back now and I'd like your advice. I'm planning on doing some math and science classes at the local community college before...

Thanks for the response Jimmy Snyder. I've read about quantum particles being represented as point masses. I thought that it was a mathematic convenience similar to the way we use the center of mass in classical physics. Do quantum particles really take up no space? Thinking about that small...

There are a few other photos of other planets, but they are definitely still the exception rather than the rule. The http://www.physorg.com/news185795684.html" [Broken] was captured with visible light! As with so many things in astronomy, it's only a matter of time. We're taking the most amazing...

Why not? From the caption:

I'm not a comsmologist, but I think the term black hole is somewhat of an understatement. We're talking about all the matter in the universe including all the black holes. The universe began with all matter in one spot. It seems to me that there would be another big bang if it were to happen...

This is incorrect. I was confusing knowledge about information and physical information itself. In actuality there is a relationship between the quality of information and the amount of work I can use it to produce. The accuracy of the information does not increase the system's ability to do...

There are actually two types of free energy, Gibbs and Helmholtz. They are two types of thermodynamic potentials. In that way, you could consider free energy a type of potential energy. I don't claim to be an expert though. Yes. I could throw a piece of coal into my train's engine. I could get...

You got me thinking. Information can be the result of energy. Can energy be the result of information? The more precise information I have about a system, the more energy I am able to extract from it. (This assumes that my measurements are nondestructive.) So there is definitely a...

I'm not the OP (obviously), but I read about it http://www.physorg.com/news197727820.html" [Broken] last month.

And this is why that type of information is not my focus. Any value in the sentence "I'm lazy." is completely subjective. I just don't see how it can be considered energy. Landauer's principle was addressed in the very first post of this discussion.

Don't A and B also need to be n x n matices?

If I use a pen and paper the "difficulty" of copying the message changes. If I cut and paste it with the handy tools built into my web browser, it's easier. I could represent this message with my fingers and toes, with sticks and stones, black and red ants, planets and stars. Or I could simply...

You're certainly welcome! There are many models that describe what space is. The popular idea at the moment is that space-time is a continuum composed of three dimensions of space and one of time. [PLAIN]"en.wikipedia.org/wiki/Spacetime"[/URL] On that page you can read how a space-time...

I believe Vanadium 50 was just clarifying a point. (A point I didn't get the first time around, so thanks.) I see what you're saying about space also. It's kind of the same as time. You can measure space with feet, light years, meters, the wingspan of a canary. It doesn't really matter...

I do not think that this is a stupid question. Time does not move the arrows. Energy moves the arrows over time. Measuring how much energy is lost let's us know how much time has passed. I suppose you could use a voltmeter to measure time. (Use a clock instead! It's much easier.) You ought...

I'm not going to lie. I didn't understand half of that paper. The maths were way beyond me. It had a really interesting premise that I'd not heard of before, an indefinite causal structure. Causality becomes probabilistic rather than definite. Really interesting stuff. Unfortunately, I don't...