Recent content by pi-70679

Hi, as far as part (a) is concerned, think that the gravitational potential will only be influenced by whatever portion of the Earth that is below you, the outside will cancel out. This is already shown in you expression for the force and from there you should be able to get something . You can...

Artman: True :smile: it may seem weird when you read those statements one after the other. If only considering those two statements, i would in fact seem like a complete maniac... Which i can reassure you i am not: i use an air rifle, which means that i have no clue about how to handle a rifle...

First STAii, if you read what i wrote again, you'll see that i don't say euclidean geometry doesn't apply, i just said that if you go outside flatland, you can have something else and that when space is curved, a shape will be deformed, just like drawing a triangle on an empty baloon and then...

Just so you know, i practice shooting for hand eye coordination. Sniping (although it has a bad reputation), is the best exercise i know to learn how to totally control how your muscles react and is quite good for coordination of body-eye coordination. I've been introduced to that sport by a...

I'm sorry if i offended someone, i just think that stuff such as going pass the speed of light can be countered by say hyperdimensions. The thing which i considered to be the problem people think is impossible to solve is to travel large distances in a humanlifetime that even light would be too...

as nice as this sounds, i doubt my teachers would appreciate.

I just find that learning pi is a good way to maintain your memory active, plus it's a really good time waster. I found out that now i can remember series of numbers in a lot less time. I just use birthdates, repeating numbers, and my latest, pattern you do with your fingers when you type the...

usually, the last half of the alphabet is reserved for variables and the first half for constants. It's just by convention.

I don't totally agree with what some of you said about if derived from logic and math then it should in most cases be true. I base myself to say that on geometry. Not so long ago, people were almost always using euclidean geometry. Nowadays, we know that euclidean geomtry cannot always be used...

I got to admit, it's probably one of the less useful things i ever did in my life, but heh, i had to come up with something to do in non-physics or math classes...

How many decimals of Pi do you people remember by heart. I started learning them not so long ago and so far i got: 3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 58209 74944 59230 78164 06286 20899 86280 34825 34211 70679 82148 08651 32823 06647 09384 46095 50582 23172 53594...

I just love listening to bagpipe, stuff like amazing grace, stuff that usually gives people headaches.

Don't worry about that, i did much worse in an exam situation: I was extremely stressed because the exam was simply too long, as i rushed in the last question, i accidentaly derived instead of integrating, in an eletric field question. Just image how ashamed i was when i got my paper back. The...

The problem with what you are trying to say is that your basis is totally false. The derivative of 1/5 sin^5(x) is not cos^4(x), but sin^4(x)cos(x). This is by the chain rule. You should remember that the reason why substitution eists is precisely because not everything can be treated as simply...

I think that in some cases, restrictions restrictions that have been set by people before were "broken" while at the same time respected. For example, the speed of light is supposed to be absolute, nothing can go faster. However, we can still travel a huge distance in less time than light by...