<p>The USABO thread already has 69 replies! We gotta beat them. Our first round is like... earlier than theirs!</p>
<p>Cmon guys let's nerd this place up.</p>
<p>I heard the extra meat and soup round is killer. Only 3 of the 100 semifinalists made it… The soup bloats you, and they don’t give you very much hoisin/sriracha for the meat.</p>
<p>I just took the 2011 exam today. I thought it was much easier than previous years no doubt. How did others fare?</p>
<p>i think 16-19 but not completely sure</p>
<p>Thats what I think I got as well. I only omitted 3-4: I wonder what the cutoff will be.</p>
<p>Wow this thread is so dead…I just took it today, and I agree. It seemed somewhat easier than the others. I think I got an 18.</p>
<p>hoping for a similar cutoff as previously. prob around 17</p>
<p>would you say USaPho is easier or harder than AP Physics C, im assuming harder, and how come are two of the 4 IPhO participants straight out from andover?</p>
<p>^I would say it’s harder, but then again it’s different. Technically, you could get to semis with only the first semester of non-AP physics since it only tests over mechanics and doesn’t require knowledge of integrals or derivatives.</p>
<p>Andover’s an elite school that’s on the same level as Philips Exeter, so that’s no surprise ;)</p>
<p>I’ll be taking the first round tomorrow morning. Are any of you guys up for starting an AIM chatroom to discuss? Maybe we could come up with a compiled answers list just as we do for SATs. Obviously, it’ll have to be Friday after school after the last day, so everyone would have already taken it.</p>
<p>I thought they didn’t want people talking about the test until a couple weeks after testing is finished. Anybody got the exact date?</p>
<p>The last day of f=ma testing is Jan 28. We shoudl wait until the week after to be safe.</p>
<p>I think the test said that we can only discuss Feb. 20.</p>
<p>bump…so has anyone gotten their score yet? anyone know the cutoff?</p>
<p>They never release the cutoff… so we’ll be able to find out after people get back their scores and if they made Semifinals or not :D</p>
<p>2011 US Physics Team Semi Finalists
<a href=“http://aaptweb.aapt.org/physicsteam/2011/upload/2011-Semi-Finalists.pdf[/url]”>http://aaptweb.aapt.org/physicsteam/2011/upload/2011-Semi-Finalists.pdf</a></p>
<p>Sorry for resurrecting a somewhat dead thread, but it seems there hasn’t been much discussion of USPhO lately. Since it is now April 1st, I assume we are free to discuss the test? I got mine back today from my physics teacher.</p>
<p>EDIT: The semifinal, I mean.</p>
<p>Seriously, no USAPhO takers here?</p>
<p>I took it!</p>
<p>It was a completely massacre, I don’t think the people at my school collectively got half the problems, ignoring the one super genius.</p>
<p>If anybody knew how to do A4, where did you learn the material needed for it?</p>
<p>Basically no one started out knowing A4, but luckily they kind of guided you through the steps.</p>
<p>a) The E-field must be zero at the edges, which means sin(kL) = 0.</p>
<p>So kL = n * pi, where n is an integer, and k = n * pi/L</p>
<p>That’s all I remember off the top of my head, except that the last part was some kind of spherical integral in state space.</p>
<p>I’m really hoping I made the team, but I totally screwed up part B.</p>
<p>I think I got around a 160. Although that’s being pretty optimistic.</p>