## Search found 124 matches

- Tue Aug 25, 2009 4:10 am UTC
- Forum: Science
- Topic: Small or Big Fists?
- Replies:
**31** - Views:
**6645**

### Re: Small or Big Fists?

Your muscles can impart a certain energy to your punch and that energy is tranfered to your target With a motion like a punch, there is a limit to the speed at which the muscles can contract. This means that there is a maximum velocity at which the punch can land, regardless of the mass of the fist...

- Tue Jul 21, 2009 2:04 am UTC
- Forum: Mathematics
- Topic: good, fairly high level geometry book recommendations?
- Replies:
**3** - Views:
**878**

### Re: good, fairly high level geometry book recommendations?

I'll check these out, thanks again for helping me out!

- Sun Jul 19, 2009 2:54 am UTC
- Forum: Mathematics
- Topic: good, fairly high level geometry book recommendations?
- Replies:
**3** - Views:
**878**

### good, fairly high level geometry book recommendations?

I don't remember how particularly good my geometry education was, although I know I wasn't a great fan of the teacher. I've been going over physics exercises and naturally have to work with a lot of geometric proofs. I'll often have to draw out the relationships between all of the angles in order to...

- Thu Jul 09, 2009 3:14 pm UTC
- Forum: Science
- Topic: MY Kind of Science
- Replies:
**19** - Views:
**2619**

### Re: MY Kind of Science

I felt it was important to point out that the simple definition of science in more akin to controlled experimentation. So any particular field isn't necessarily any less of a science then other sciences in that respect. The Myth Buster's experiments for example, are more or less following the scient...

- Thu Jul 09, 2009 6:34 am UTC
- Forum: School
- Topic: 09 AP Physics
- Replies:
**16** - Views:
**2445**

### Re: 09 AP Physics

Managed to pull off a 5 :), found #3 of the free response to be the most entertaining, #1 was reasonable up to the final sub question if I recall correctly...I didn't know how to handle #2, I wrote up a differential equation and attempted to try and find out what I didn't know...It'd be nice to see ...

- Fri Jun 19, 2009 5:27 pm UTC
- Forum: Science
- Topic: can I get some physics textbook reccomendations?
- Replies:
**15** - Views:
**1766**

### Re: can I get some physics textbook reccomendations?

I enjoy the Feynman lecture series partially because they present how realistic these physics discoveries are(I feel teachers talk about these discoveries as if they are a gift from god.) So much content is covered however I'm not sure they'd be an appropriet text for an AP physics course. A person ...

- Mon Jun 01, 2009 5:23 am UTC
- Forum: Science
- Topic: Most geeky thing you've done recently.
- Replies:
**133** - Views:
**50534**

### Re: Most geeky thing you've done recently.

I relatively recently made a basic physics engine to simulate gravity for a game I'm working on. After getting that to work to a point where my game didn't contradict my calculations I felt I earned the right to call myself a nerd/geek.

- Sat Mar 28, 2009 2:45 am UTC
- Forum: Serious Business
- Topic: Let's Talk About Energy Production
- Replies:
**872** - Views:
**97491**

### Re: Nuclear Power: Time to reconsider?

The consequences regarding nuclear waste are realistic to manageable in contrast to other wastes. The op never stated that it didn't have problems, rather that its problems are easier to deal with then the problems associated with current wastes. You haven't given a convincing argument for why this ...

- Sat Mar 14, 2009 1:23 am UTC
- Forum: Mathematics
- Topic: Why is 2 not equal to 3? Is this question nonsense?
- Replies:
**7** - Views:
**1576**

### Re: Why is 2 not equal to 3? Is this question nonsense?

K cool, I just wasn't sure if one could look at a problem like this at least somewhat objectively. The references presented gives me someplace to start, appreciate the help!

- Fri Mar 13, 2009 3:34 am UTC
- Forum: Mathematics
- Topic: Why is 2 not equal to 3? Is this question nonsense?
- Replies:
**7** - Views:
**1576**

### Why is 2 not equal to 3? Is this question nonsense?

Somebody threw questions at me that I initially felt were rather silly. We argued over the nature of the universe for a bit, and I eventually got him to admit that the universe must exist without inherent contradictions and that there were therefore few fundamental rules as to how things worked. He ...

- Fri Mar 13, 2009 3:22 am UTC
- Forum: Mathematics
- Topic: Pi Day
- Replies:
**49** - Views:
**6179**

### Re: Pi Day

My teacher has a century club which he lets you into if you memorize 100 digits of pi. He gives pies if you can do it :]

- Thu Feb 05, 2009 6:06 am UTC
- Forum: Mathematics
- Topic: taylor expansion of sin(x)
- Replies:
**15** - Views:
**3420**

### Re: taylor expansion of sin(x)

Cool! My question was essentially answered. What I should've said in the first was that cos and sin were the only trigonometric functions that cycled through each other(I doubt you can manipulate e^x's Taylor series into a trig function without a trig function). The comment regarding sin, cos, e^x, ...

- Wed Feb 04, 2009 6:12 am UTC
- Forum: Mathematics
- Topic: taylor expansion of sin(x)
- Replies:
**15** - Views:
**3420**

### taylor expansion of sin(x)

I was trying to understand this concept of expanding on a single point and deduced that in order for this to work, the trigonometric functions sin and cos must in fact be the only functions that cycle through themselves when you derive them over and over again. I also wanted to say however that the ...

### Re: Pianists?

I consider myself a pianist, although there are a couple skills I feel I need to develop more before I can feel justified of that title. I'm willing to call myself a pianist because I've cried to things I've improved randomly(I can only improve slow stuff generally), and I can "hear" mysel...

- Wed Dec 24, 2008 2:43 am UTC
- Forum: General
- Topic: Mental experiments, How do/can people solve problems?
- Replies:
**25** - Views:
**2130**

### Re: Mental experiments, How do/can people solve problems?

Alder26: the reason I haven't brought up rhythm, is because it seems like that is much more of a human variable(except for perhaps keeping tempo.) It's very hard to call a particular rhythm wrong. It's (relatively)easy to observe an "ideal" system with harmony, and understand what rules a...

- Wed Dec 24, 2008 1:34 am UTC
- Forum: Mathematics
- Topic: Fun probability things?
- Replies:
**42** - Views:
**3488**

### Re: Fun probability things?

Someone tells you that they have two children. You see one of them, who is a girl. What is the probability that the person has a son? Careful here. The usual phrasing is something like, "Someone tells you that they have two children, at least one of which is a girl." The way you phrased i...

- Wed Dec 24, 2008 1:06 am UTC
- Forum: General
- Topic: Mental experiments, How do/can people solve problems?
- Replies:
**25** - Views:
**2130**

### Re: Mental experiments, How do/can people solve problems?

Was messing around on the piano and found that my method thus far doesn't work well for telling the difference between tonics,their inversions, with the fourth and fifths inversions in play. Determining whether something is an inversion by using diotiMajsh's trick, and then using the root of that in...

- Wed Dec 24, 2008 12:14 am UTC
- Forum: Mathematics
- Topic: Fun probability things?
- Replies:
**42** - Views:
**3488**

### Re: Fun probability things?

So if you're in last you have an 86% chance of winning right? If by "winning" you mean "losing". Everyone has a 1/7 chance of winning, regardless of order. if by "winning", I meant "losing" I'd still be wrong :p. K, if one by one they walked up to a bucke...

- Tue Dec 23, 2008 11:19 pm UTC
- Forum: Mathematics
- Topic: Fun probability things?
- Replies:
**42** - Views:
**3488**

### Re: Fun probability things?

Seven people are given the chance to win a car. Each person in turn selects a key from a basket of seven keys (one of which is the correct one) and tries it in the ignition. If the car starts, that person drives home and the game ends, leaving those who haven't yet chosen choking on exhaust. Losers...

- Tue Dec 23, 2008 10:33 pm UTC
- Forum: General
- Topic: Mental experiments, How do/can people solve problems?
- Replies:
**25** - Views:
**2130**

### Re: Mental experiments, How do/can people solve problems?

Well, okay. I guess I'm not seeing how this will apply to chords based on other roots though? I mean, what about when you have a tonic other than C? What about when you're wanting to create or identify an inversion where you can't just look for the 0 to see where the root is? Or did I miss somethin...

- Tue Dec 23, 2008 8:33 pm UTC
- Forum: General
- Topic: Mental experiments, How do/can people solve problems?
- Replies:
**25** - Views:
**2130**

### Re: Mental experiments, How do/can people solve problems?

Base 16 assigns letters the values of numbers A=10, B=11, etc. So yeah, you did it right as far as CS is concerned. I separated the numbers with a space [2 (11)] to avoid using letters, but meh you got away with it just fine so I'll keep it to current standards. The reason why I want to avoid using ...

- Tue Dec 23, 2008 9:58 am UTC
- Forum: General
- Topic: Mental experiments, How do/can people solve problems?
- Replies:
**25** - Views:
**2130**

### Re: Mental experiments, How do/can people solve problems?

yeah, augmentations simple meant some change. I was trying to emphasize that if I knew what the main tonic was, then I could get an idea as to what was changed. That was poor word choice though considering the subject... Although this numerical way to explain modes is taught by standard music theory...

- Tue Dec 23, 2008 2:53 am UTC
- Forum: General
- Topic: Mental experiments, How do/can people solve problems?
- Replies:
**25** - Views:
**2130**

### Re: Mental experiments, How do/can people solve problems?

I still want to observe how this or other methods would be done on a piano whose sharps and flats were separated. I imagine that could be enlightening as well. If I was on a string instrument however I would try looking at it in a different way anyway since they're not constricted to any particular ...

- Mon Dec 22, 2008 10:14 pm UTC
- Forum: Mathematics
- Topic: Fun probability things?
- Replies:
**42** - Views:
**3488**

### Re: Fun probability things?

I forgot probability has a habit of being controversial as well as unintuitive. Of course that's half the fun, thanks for the replies so far, they're good practice.

- Mon Dec 22, 2008 8:22 am UTC
- Forum: Mathematics
- Topic: Fun probability things?
- Replies:
**42** - Views:
**3488**

### Fun probability things?

So, the way probability is presented in school is simple, and generally not useful. Also, probability seemed weak at predicting things except for obscenely large numbers. However, buffon's needle opened my eyes to exactly how clever one can be with probability, and Feynman's lecture on probability(t...

- Mon Dec 22, 2008 6:54 am UTC
- Forum: General
- Topic: Boy Thread: put a hat on ur butt
- Replies:
**14355** - Views:
**1443683**

### Re: Boy Thread: All the good names were taken

I haven't personally taken European history, but doesn't Russia get invaded and screw over the invading country multiple times throughout history? Also, One is a nintendo fanboy, the other is a sony fanboy. You have to see the first comic to get the second comic. http://fanboys-online.com/index.php?...

- Mon Dec 22, 2008 5:45 am UTC
- Forum: General
- Topic: Mental experiments, How do/can people solve problems?
- Replies:
**25** - Views:
**2130**

### Re: Mental experiments, How do/can people solve problems?

It's that type of thinking when observing "problems" that I'm really curious about. Sort of like building diverse periodic table of elements to figure out how much more we can learn about elements. -35 btw, is not that bad of an interval. If you know that an octave has 12 halfsteps, then y...

- Sat Dec 20, 2008 6:49 am UTC
- Forum: Computer Science
- Topic: Simple Java Physics Simulator
- Replies:
**28** - Views:
**8848**

### Re: Simple Java Physics Simulator

How about custom mass? Actually that and an option to turn off flat earth could be fun too. We can always use another solar system simulator :]

- Sat Dec 20, 2008 2:27 am UTC
- Forum: General
- Topic: Mental experiments, How do/can people solve problems?
- Replies:
**25** - Views:
**2130**

### Re: Mental experiments, How do/can people solve problems?

It would sound like something else entirely of course, but if you didn't hear the original song you wouldn't find anything wrong with it. Edit: That's besides the point though, transposing is generally really hard to do quickely, part of what made this system of looking at the problem interesting wa...

- Fri Dec 19, 2008 8:27 pm UTC
- Forum: General
- Topic: Mental experiments, How do/can people solve problems?
- Replies:
**25** - Views:
**2130**

### Re: Mental experiments, How do/can people solve problems?

As someone interested in both maths and music as well (a fairly common combination, possibly for the reasons you're pondering), I often examine music intervals and other bits an pieces with maths (and physics!). However, I haven't found this useful for transposition. I can just transpose on the fly...

- Fri Dec 19, 2008 6:02 am UTC
- Forum: General
- Topic: Mental experiments, How do/can people solve problems?
- Replies:
**25** - Views:
**2130**

### Mental experiments, How do/can people solve problems?

One of the things I've been curious about is how flexible the mind can be when it solves problems. I got somewhat interested in mathematics last year(currently 18), and very interested in music the year before. What got me interested in mathematics was the realization, when solving a problem, of how...

- Wed Dec 17, 2008 7:00 pm UTC
- Forum: Serious Business
- Topic: Human "breeding", and its implications
- Replies:
**95** - Views:
**12890**

### Re: Human "breeding", and its implications

"1) Abandoning the idea that community has any relation to genetics. This would allow children to go to parents that wanted children. Some issues might arise from mothers being attached to their born child, but I feel certain many of those feelings are socially ingrained now." The feelings...

- Thu Oct 23, 2008 4:29 am UTC
- Forum: General
- Topic: Chat with ebay bot
- Replies:
**52** - Views:
**4460**

### Re: Chat with ebay bot

This entire conversation made me lol. The groups patience with victor is truly impressive.

- Mon Oct 13, 2008 4:50 am UTC
- Forum: Mathematics
- Topic: Real numbers, and smallest numbers...
- Replies:
**18** - Views:
**2368**

### Re: Real numbers, and smallest numbers...

The login pop-up box got rid of my message. So I'll retype it tomorrow after school. Thanks for being patient with my arguments thus far.

- Mon Oct 13, 2008 12:41 am UTC
- Forum: Mathematics
- Topic: Real numbers, and smallest numbers...
- Replies:
**18** - Views:
**2368**

### Re: Real numbers, and smallest numbers...

What I discerned from their explanations was that the reason why the limit definition was valid, was because there is in fact no smallest number greater then zero. And that therefore, real numbers fail to truly represent reality. I originally thought this, and tried experimenting with this in the pa...

- Sun Oct 12, 2008 8:06 pm UTC
- Forum: Mathematics
- Topic: Real numbers, and smallest numbers...
- Replies:
**18** - Views:
**2368**

### Re: Real numbers, and smallest numbers...

I should have mentioned that that was just another idea. I hypothesized that pi's irrationality was due to the fact that it was approximating an impossible ideal. I forgot that the sqrt is capable of making rational things irrational. I knew however that you could at least express this variation of ...

- Sun Oct 12, 2008 6:23 pm UTC
- Forum: Mathematics
- Topic: Real numbers, and smallest numbers...
- Replies:
**18** - Views:
**2368**

### Re: Real numbers, and smallest numbers...

That's what I figured, that it was in fact a property of real numbers, and that my assumption was on some level correct. but if we constrain 3x^2(the surface area of 3 sides of a cube) to only integers then it makes a lot of sense in reality. Go back to the magical land of reals and it's possible to...

- Sun Oct 12, 2008 5:41 pm UTC
- Forum: Mathematics
- Topic: Real numbers, and smallest numbers...
- Replies:
**18** - Views:
**2368**

### Re: Real numbers, and smallest numbers...

Missed the - ?...Danget. credibility aside... I read and understand the definition of a limit; I'm having difficulty reinterpreting the consequences of a limit in reality. When playing with a formula intended to estimate pi n{\sqrt{2-2\cos\frac{180}{n}}} where n is the number of sides on an n-gon. I...

- Sun Oct 12, 2008 6:23 am UTC
- Forum: Mathematics
- Topic: Real numbers, and smallest numbers...
- Replies:
**18** - Views:
**2368**

### Real numbers, and smallest numbers...

I was reading up on calculus last summer and found myself wrestling with the symbolic significance of what it actually means to find the instantaneous velocity of a function. The limit from, what I understand, takes advantage of a property of real numbers that I don't find to be very realistic at al...

### Re: Homework

I don't mind groups if they are paired randomly. My circle of friends however, are in either non-honors classes, or in other schools. So I always end up with the group of kids that are too nervous to make friends...