Recent content by thornza

Hi, Just wanted to know from any electrical engineers out there why it would be hard to redesign the common cellphone chargers to not draw current when the device is plugged out of it. My EE knowledge is not great, but wouldn't it be possible to put a "switch" before the primary coil that...

yeah - but the neutron is deflected 90 degrees - so that term becomes zero in one equation and 1 in the other, reducing the equations to the ones I have written, not so? Or am I still wrong?

ok man - this is going to look ugly but here goes: x - component momentum conservation: mass1*v1initial = mass2*v2final * cos phi y - axis: mass1 * v1final = mass2 * v2final sin phi kinetic energy: (note sqr() means the square not the square root) 1/2mass1 * sqr(v1initial) = [1/2mass1 *...

ok man - i take back what i said earlier about not wanting the answer. If you know how to do it please could you show me. I have started with the basic equations like you said (although this is about the tenth time I'm doing that). I still don't get anywhere near the answer I'm looking for. I'm...

Yeah - I've been playing around with those equations last night (cos theta for x component, sin theta for y component etc)...The neutron goes from having full x component momentum to full y component momentum etc But what about the deuteron? Does it go 90 degrees down if the neutron goes 90...

No - I have no idea what that is. This is a first year physics course if that helps?

Homework Statement A neutron has an elastic collision with a stationary deuteron. Mass of neutron is 1 amu, mass of deuteron is 2 amu. the neutron is deflected through 90 degree angle. Prove that the neutron loses 2/3 of it's initial kinetic energy to the deuteron. Homework Equations...

Hi, I'm in first year organic chem and we're obviously learning about all the different reaction mechanisms (e.g. elim reactions of alcohols) and I was wondering if the only way to figure out what is going to happen in a particular reaction is to memorize all these different reaction...

Hi, I was busy studying for my first year physics exam that's coming up and had a thought on the whole mass = energy thing. If I carry a mass up a large hill, will it gain mass at the top of the hill due to the potential energy that has been increased? sorry if this is a stupid...