Recent content by Jonh Doe

I need some information about the coefficient of circular or rolling friction for rubber on tarmac (or asphalt). It is to do a measurement of the force required to move an object of certain weight at regular speed on wheels. I know that rolling friction is about 1/100 of the kinetic...

By physicskid HAHAHAHA! No, seriously, not a so good argument. (if you consider that some research is a lot more cruel than just killing the animal. (figure that I have heard about research of how to graft genital human organs on mice!) By decibel This is, and sorry for...

I think it would be easy enough for god to prove to you he is actually god. Just tell him what you would think is absolutely impossible (example: pop a planet out of nowhere, go at the speed of light, take a rabbit out a truly empty hat, ect... (you get my point)), and have him do it. I he can...

I approve. (I could say why I approve, but I saw on another forum that it was forbidden on Physics Forums to have religious talks about God.)

I would like to know what is(are) the unit(s) of measurement for the magnetic fields of permanent magnets, and what is the instruments for measuring it (if one exists). Thirdly, is there a way to calculate such a field (mathemeticaly, by measurements, etc...) I have heard of many things...

a) Only God knows b) The hell would I know

Specification Just to say that what I meant by Unchanged conditions was more of something in room conditions (for example, a magnet sitting on a couner... ), not some hypothetical 0 K situation inconcevable in any situation (or almost). I did not specify this because I did not think someone...

I am posting this here because I have not been able to find the answer anywhere else. I know some of you might find this quite dumb of me, since I have seen some quite learned scholars in this forum, and my question is pretty basic. I am aware I might not be in the right forum. My...