Recent content by rea

You don't need the radius for calculate this electric field. It more clear with the anterior aclaration, specialy the one that say something like "its about 2 forces in equilibrium". The electric field is not a force at all, but a description of how the force (electric one) interact with the...

I only don't put the answer that need be proved (I write it in short). Perhaps my translatio to english in the question is wrong... Here is again: calculate the shortes (the littlest) angle that the final velocity of a fragment will do with the horizontal. Solution...

Ok, after some work, it seem that I am not able to do this exercises, over even get something that describe them... I don't know even how to handle it... I can see what is asked in some way, but don't know what to plug.The next one, I'm more near, but unable to continue. here is what I have...

I haven't finded nothing similar, tought some exersices here and there but that dosent help much ;). OK, I guess then I will need ask the questions directly here instead.

And with that you take the components of the vectors, in that way, you eliminate for the moment the vectorial behaviour and work directly on the components (taking the direction like + or -).

Hi there people, I have been in the physics course of my school, tought I not aprovate it. Then I need present a exam of "recuperation", I will like to know if you have a book/resource (online) because I can't buy for the moment and the exam is soon, then I need to see examples :), I think now...

It was not a question, I don't write goo english. I say, that a 0 is only a starting point and for maintain it you don't need the oposite all the time, for example 1+2+3=6, tought mathematics say that one side equal the other, and if you pass them to the same side they "eliminate"...

Not all is easy. You need all the tools, because Windows dosent provide a dvi visor or a ps visor, then you need download ghostscript (that are free also). See the description by instance: In fact, I think that TeXnicCenter use MikTeX like the compiler, ie, texnicenter is only the IDE like...

if you whant lectures for high school, what about MIT? http://ocw.mit.edu/

Sorry, english is not my natal language. Yes, I was referring to co-exist, but let's see before co-exist, such specie should start to evolve, for example the other day I saw a documental about a bird called "kya" in Europe and aparently is very intelligent more than apes (before they where near...

sure... For Windows systems, there is the option of MikTeX also there exist ghostscript and other similar packages you will need, they are free. In Linux, I exactly don't know, but normally the distributions contain TeX and LaTeX, also there is a editor that I will like to...

I have the idea of all from nothing and nothing from all also from some time now, not necesarily mean that a+b=0... is that a exactly the oposite b, also, we have 0 elsewhere like a start and end point but not need be all the time in the same place, even mean the same, thus... :roll:

No one is integral in some way (look at extreme cases), and all are integral in the other way (the simple cases).One of diferent explanations: 1) Yesterday I was watching a part of a documental, where there are some mirror neurons, that let us feel what others feel, understand others...

I only whant to say about evolution for this moment, will be the human able to not exterminate a competitor... evolving in our world... remember "competiotion the 'strongest' win"?

You can compile one file IRC without the need to do a project, see the menu "compile", also do a project for more than one source, also check the project options and when creating the project, select the option that satisfy your needs. PellesC and LCC are also free IRC only aplicable to C not...