Recent content by Luchopas

ok i have done it , but besides the integration do you feel my answer is correct? thanks

SORRY YOU ARE RIGHT , is the same formula but without the epsilon 0. thats was for part a) , now for calulating the E.F for outisde the sphere i got this: http://img36.imageshack.us/img36/8785/dddv.png" for this i don't know how to solve the integration.. please help...!

mmm... i think is correct...

ok perfect this is what i did: http://img440.imageshack.us/img440/2251/dibujoxzv.jpg"

why in differential form?

Homework Statement Problem : Supose that there is a solid sphere of radius R , with density charge that's depends of the distance to the centre of the sphere ( p = p(r)) : Question: supose that we know the electric field inside the sphere that is...

mm not really just was a moment of doubt, but you got me convinced. thanks

got it, thank you very much.

it is equal to the d vector ..right?

(ro/3*epsilon 0)* (r+ - r-) right?

It will be the sum of both electric fields ...right?

yes youre right, so what do we do know for he hollow section? because know we have both electric field to a point P of both spheres...

you mean r+ and r- like the direction of the magnetic field?

Sorry I am not getting it... could you explain more specific... thanks please

this: http://img339.imageshack.us/img339/6308/53230410.png" so what is the next step?