Recent content by mrkmrk

Yet another general GRE scores question thread--and physics GRE nightmares Sorry about that. I've done some searching, though, so I'm not too sorry. I haven't found anything that quite fits what I'm looking for. Namely, I'm wondering if physics grad schools might look highly upon high...

I'm doing this same problem, and am currently stuck looking at the following: mx'' + ρ0*(V+A*x) - mg I'm really stuck on this one, and I'm not quite sure why. I think that it might just be because I haven't done physics since May...

I'm still trying... this is for one pole. E = K*Lambda*Integrate[r-hat/r^2,{r,-Infinity,Infinity}] E = K*Lambda*Integrate[<0,y,0>/(y*r^2),{r,-Infinity,Infinity}] E = K*Lambda*Integrate[<y>/(((0^2+y^2+0^2)^(1/2))*r^2),{r,-Infinity,Infinity}] E =...

I don't mean to sound like an idiot, but that's for /both/ charges? How does one come to that conclusion?

Oh, I think I get that, then. So, if the fields add in the y-direction, how to I denote that?

I don't understand how the x-components cancel... I could see that being the case if the rods had equal charges, but opposite? Wouldn't that make the field go doubly in the direction of negative charge?

Could someone help me out with this? I can't, for the life of me, figure out where to even begin. I've got a great professor, and I understand everything he says in class, but when it comes to actually solving homework problems, I don't know what to do. Any help would be greatly, greatly...