<p>^ So are you saying it was just I or I and II? </p>
<p>Guys, the Capacitance equation implies that voltage ACROSS THE CAPACITOR must decrease> C = q/V . If C increases, and q is the same, then V MUST decrease. Unless I'm seriously mistaken and misreading PR page 234</p>
<p>And I put when the object is horizontal for the friction problem, so I guess I got it right?</p>
<p>I put I only but that's just a guess.</p>
<p>The charge does not have to stay the same since the problem states that the capacitor is connected to the battery when the dielectric is added. Check that page and see if the capacitor remains disconnected from the battery in which case conservation of charge applies and your explanation would be correct.</p>
<p>Uhh, the maximum frictional force occurs right before the object slips (at 30 degrees if I remember correctly). If it's horizontal, why would there be any friction at all?</p>
<p>In the explanation the battery is disconnected. However I thought in both choices where it said C increases, Q is constant. So now I'm thoroughly confused as to what was correct.</p>
<p>And yeah I messed up the friction one, I thought it meant what would be the maximum friction force in GENERAL (as in, when the force was parallel with the ground). lol. </p>
<p>Well that makes -4, still an 800 right now right?</p>
<p>One of the answer choices was C increases, V is constant, and Q increases (to satisfy Q=V*C)</p>
<p>lol should be 800 if you didn't make too many other mistakes</p>
<p>oh well, musta missed both then I guess. Isn't like -9 or -10 800? If so I still have a bit of a buffer zone, hopefully....</p>
<p>Does anyone remember the one with the piston? something about pressure and set volume, and one choice was increase molecules?</p>
<p>And the one with the cycle of pressure changes? I know it went clockwise and started and ended at same pressure/volume. I skipped it right away and didn't have time to go back. Is it just the area under each horizontal line component?</p>
<p>The piston one was the temperature decreases I think</p>
<p>And the other one was no change</p>
<p>Was it just me, or was that test 100X easier than the PR book's?</p>
<p>It was somewhat easier for me. Then again I didn't think PR was that hard.</p>
<p>It was definitely much easier than PR.</p>
<p>i thought physics was pretty hard... that's because about 5-10 of the questions is material that we've skipped over because it's not too relevant on the AP exam (AP physics B... crapload to cover in that).</p>
<p>what makes me mad is i made a 5 on an AP physics b test (old one) the other day, and this one seemed harder to me</p>
<p>I agree. The material for AP Physics B seems a lot easier in some respects than the SAT II. Maybe it's because I've been studying for that all year and figured I could figure out everything I needed to know for the subject test in this last week. Not so.</p>
<p>what's really good is a minus 20 points (after -1/4 factor) is still a 750... i think i missed about 20, so hey, i'll take a 750 any day</p>
<p>the conversions are on a sparknotes test taking study guide thingy</p>
<p>wow i thought the test was harder than PR/Kaplan.
Why is it only me ?</p>
<p>i thought the subject test was harder too</p>
<p>On the PR practice test, I got around a 600. </p>
<p>On this, I'm predicting around a 700.</p>
<p>does anyone know the general score that an honors physics student gets on this test?</p>
<p>I think it's harder than the test on PR/Barron/Spark - -a</p>
<p>How did you think the difficulty of the exam compared to that of the sample physics SAT in the blue Collegeboard book that has one real example of each type of SAT subject test?</p>
<p>About the same really, actually perhaps slightly more difficult.</p>