Dec 3 Physics Official Thread

<p>How'd you do? I took it approximately 10 hours ago. =p</p>

<p>(If you haven't taken it yet, good luck!)</p>

<p>i took it...</p>

<p>It was horrible !! :( I am so angry. The November one was easier !</p>

<p>It WAS horrible! Many easy questions but some insane ones. The proctor didn't say 5 or 10 minutes left, so I ended up leaving 7 blank, definitely getting the last one wrong (used wrong hand...damn), and guessing on around 5.</p>

<p>Do you guys think the scale will be lenient?</p>

<p>yeah, was pretty ****ed up for me too...I just pray and hope, maybe it'll be fine in the end..oh damn :(</p>

<p>I think the scale will be somewhat lenient. I made some really dumb errors :-(.</p>

<p>OK we can discuss the test now, right?</p>

<p>What about that expanding universe one...? Or the photoelectric one? (both were I, II, III questions I believe)</p>

<p>AHH I give UP! I was thinking I would not discuss the questions...</p>

<p>The red-shift one definitely applies. I put that the background radiation also applies since it implies the big bang. I don't think the elliptical orbit choice applies.</p>

<p>About the photoelectric one:</p>

<p>Is that the one with the work function? The work function wouldn't change. I don't remember the other choices at the moment.</p>

<p>Thank you. That is exactly what I put, from what I remember.</p>

<p>s'vrone you are definitely right on the universe expanding one.</p>

<p>I actually did not think that the test wast THAT bad, though.</p>

<p>It was realy not that bad. Most questions were pretty easy. But a few threw me off, and I didn't keep track of time so I didn't finish the last 5.</p>

<p>Anybody else remember questions?</p>

<p>left 2 blank...</p>

<p>semiguess on like 4 others...</p>

<p>anyways...</p>

<p>3600coulombs?
for the question with magnetic field and turning square...i put I&II. III
for the question with charges A and B shot horizontally into a field and B turn upwards first, i put B as more charge.</p>

<p>for the half lives question with 12noon->4pm i calculated 3 half lives so... 4hours/3half lives = 1 + 1/3 = 1 hour 20 min</p>

<p>what did u guys get for the question with photon shot to something and electron comes out. if the second electron has half the wavelength, the energy-volt should be.........?</p>

<p>i put double the energy cuz i though wavelength and frequency are inversely related. so half the wavelength = double frequency...ah crap. i got this question wrong. </p>

<p>more frequency = more energy by plank's law</p>

<p>I think it was only 2 of them for the square in the magnetic field.</p>

<p>B (if this was the one that didn't get as far b4 turning up) might have more charge, or it might have less velocity. Since we don't know this, the only answer that is definite is that they have the same sign of charge (E).</p>

<p>Yes, 1 hr 20 min for half life.</p>

<p>It is double the energy, because of the reason you stated.</p>

<p>"B (if this was the one that didn't get as far b4 turning up) might have more charge, or it might have less velocity. Since we don't know this, the only answer that is definite is that they have the same sign of charge (E)."</p>

<p>ahhhhhhhFAWWWK</p>

<p>i don't want to know anymore that i got wrong. i'm hoping for a good weekend w/ no stress. </p>

<p>goodbye and goodluck.</p>

<p>I put that only the 2 squares that turned into the field (not the one that turned in the same plan as the paper) caused electromagnetic induction. This is because the emf induced is equal to the change in magnetic flux over time. Magnetic flux = B<em>Area</em>cos(theta). The neither the angle nor area changed for the sideways rotating square, so it didn't change its gag. flux, so it didnt create any current.</p>

<p>oh yea....i want to remind you something flipsta</p>

<p>i've looked at the physics test in Real SATII's book and the curve was huuuge. like 10-11 wrong still equals 800 i htink.</p>

<p>on kaplan it says: 63 out of 75 raw points = 800. so that's 12 wrong</p>