2011 AP Physics C Post Test Discussion

<p>^
lol.
and i agree with you, pi, about the use of calculus.
the “calculus” on question 3 was like, literally the second most rudimentary concept in Phys C</p>

<p>A physics genius with an inner slut.</p>

<p>Ughh I can’t wait to see how they decide to make the curve for the mech… This is gonna be torture for the next two months</p>

<p>Lol, I’m really hoping it’s ~40% for a 4. Does anyone think that’s possible? (for Mech)</p>

<p>Thank you. Out of the 90 kids who took Mech at our school I haven’t heard one say it went well. **** that ****.</p>

<p>Some of the MC were alright; more were like W-T-F?!?!?!?!!?
And I should have been able to do 1 and 2 on the FRQ but I totally blanked, probably due to lack of studying. I forgot just enough that I couldn’t complete them.
3? I drew a sad face in the graph. That was the only answer I put down for the whole question. I think that says it all.</p>

<p>If you make a test so everyone fails and scale it based on how <em>badly</em> everyone failed, does that really help anyone in the end?</p>

<p>Does anyone else feel that E&M was more difficult than mechanics?</p>

<p>The consensus seems to suggest otherwise. I personally found the E&M MC to be a lot easier, and the FR questions were a lot more straightforward.</p>

<p>Well, ****, looks like I’ll have to hope for a 5 on E&M, considering I have no idea how I did on the MC</p>

<p>I just kept falling behind pace on the Mech MC, whereas on E&M I hit a string of like ten questions in one minute and finished with 15 minutes left to check answers/finish the few I skipped. Maybe it just felt easier by comparison.</p>

<p>My school is the same. We make up the vast majority of the kids in our county who take physics c and we don’t even have a lot of students taking it but everyone but one person so far has said the mechanics was impossible but e&m easy.</p>

<p>Well i probably failed but except that I felt slightly more confident on e&m than mechanics.</p>

<p>hahaha lol you drew a sad face in the graph. i should have done that… i just drew a ****in squiggly line in and drew a rabbit being hanged on another problem</p>

<p>But the graph questions were freebies! All you had to do was plot the points they gave you.</p>

<p>yeah, i know. in hindsight i should have skipped the first couple… it took me so long to do the first problem</p>

<p>

</p>

<p>I know that the test told you what to plot on E&M. Did they also do that for Mech, or did they ask you to figure out what to plot?</p>

<p>Here’s what the general consensus was at my school.</p>

<p>Mechanics:</p>

<p>MC - Pretty 'effin bad.
FR - #1 was pure BS (confirmed by our school’s two genius kids). A lot of people had trouble with 2 and 3 as well, but personally I think I got at least 2/3 of #2 and possibly all of #3.</p>

<p>E&M:</p>

<p>MC - Definitely not as bad as mechanics, but lets just say I’m counting on the free response to save me.
FR - Relatively straight forward. Couldn’t get some of the Gauss and Ampere’s stuff, but I definitely got a 100% on the circuit problem. Our teacher told us continually that inductors would be what save our scores cause so many people never get to them in their class.</p>

<p>Overall I think there’s a possibility of a 5 on both, but frankly I’ll be happy with at least one 5 just so I don’t feel like I just waisted $174 and 4 hours of my time.</p>

<p>

</p>

<p>Just like our class. Our teacher only mentioned Ampere’s Law a couple times when comparing it to Gauss’, which he actually taught. He never once mentioned inductors, so all I knew was that they made back emf and the 2 equations on the equation sheet. I probably missed the LC circuit MC questions. But, as far as I could tell, all that was really needed on the second part of FR #2 (with the capacitor and inductor) were the equations on the equation sheet and basic conservation of energy knowledge, right?</p>

<p>Mech MC was relatively easy for me. FR was ok except that first question. I failed that one.</p>

<p>E&M MC was ok. Time was an issue for me on this one. FR was easy.</p>

<p>Mech was the easiest AP exam i’ve taken. Period. I prepared a grand total of 0 hours for the test, and i took the class last year. </p>

<p>MC was ridiculously easy - i think i got maybe 1 wrong because i ran out of time. The questions were completely formula based - NO CONCEPTUAL AT ALL! <— that made me angry…
FRQ were also ridiculously easy - again the time crunch, but still. Ridculously easy.
I ran out of time, so i didn’t do part e) and on for #1, but 1a) and b) could have been answered by anyone who even barely knew the correct formulas.</p>

<p>I never used my calculator once, and needed no integral calculus, and minimal differential calculus.</p>

<p>I didn’t take e+m (took it last year) but i fail to comprehend how anything could be easier than mech…</p>

<p>Oh and by two days after the exam do they mean @12:01 AM tomorrow or 1:00 PM ET tomorrow? :D</p>

<p>^ siced it</p>

<p>

</p>

<p>And how would you solve a differential equation without integrating?</p>