November 2012 SAT Physics Subject Test Discussion

<p>Oh woops, just realized what I did wrong on the temperature question. It’s mcT = -mc2T, not mcT = mc2T</p>

<p>@toonlink96 I think the magnetic field was outwards (dots)</p>

<p>k cool thats what i put for the convex lens one</p>

<p>@ ahmed I also got same size image.</p>

<p>for the electron one, I put that electrons cause interference…
what was the answer?</p>

<p>@toonlink, for that electric field one, I put out of the page.</p>

<p>Use the left-hand rule(electron).</p>

<p>Yeah I think so, the question was which of them was NOT true innit? I think the electrons cause interference is the correct answer (wrong statement)</p>

<p>@ koreanme I got the same thing (interference), but I honestly had no idea. Have you guys already completed AP Phys?</p>

<p>ive done ap physics and physics c: mechanics</p>

<p>I’m in an Indian school, so I basically study all the AP level courses anyway.</p>

<p>for the matching,
line shifted = polarization
lens = refraction
sun red = scattering
what did you guys get?</p>

<p>@ahmed, wait what? I thought it said “which of them IS true?”. Electrons do NOT travel at the speed of light actually(they only approach it). So I ended up putting “ionize the air”.</p>

<p>No fair :frowning: I’ve only completed an honors phys course (I’m in AP Phys now), and we didn’t get to electricity, magnetism, nukes, or relativity. I’ll probably be re-taking, any suggestions?</p>

<p>@siddysidsid</p>

<p>I think the question was which one is true, and the choice was electrons cannot ionize air
I put electrons cause interference because I thought electrons are waves so they do cause interference… I don’t know what’s correct though</p>

<p>@koreanme, gotcha. Ugh. Missing so many =/</p>

<p>I also put interference.</p>

<p>The last one was the ellipse. What did you guys put for that?</p>

<p>I think I put circle, but I don’t remember if that was the last problem. It was like constant magnitude of force or something.</p>

<p>Yeah that one was circle, but the last one was an ellipse that had t1,t2,t3,and t4.</p>

<p>@ Sid I think I got the areas were equal</p>