<p>Electric forces/fields need to die <em>Goes back to self-teaching electric forces and fields</em></p>
<p>For you pitch: :P</p>
<p>Two wires are parallel to each other, and both carry a current in the same direction, which is towards the right. Describe the motion of the wires:</p>
<p>a) They both move in a direction out of the page
b) The move apart
c) They move towards each other
d) One wire doesn't move, the other moves away
e) They rotate clockwise but stay the same distance from each other</p>
<p>C.
Currents in the same direction attract?</p>
<p>.. or do they repel?</p>
<p>current in the same direction attract</p>
<p>My Physics GT course this year has been alllll motion so far. I hate it. But last class we covered a little bit of electricity and I think it's kind of interesting... so I'm probably gonna self-study over the summer and take the SAT II. :) </p>
<p>About what percentage of the test is electricity or light or magnetism as opposed to motion?</p>
<p>should be WAY easier than AP and IB physics!</p>
<p>^^ for the problem above, just use the right hand rule applications and its simple, no need to memorize stuff like "currents in the same direction attract"</p>
<p>MAJOR QUESTION: Hey guys, I am taking the SAT Physics Subject Test in June and I want to know whether or not PR [Princeton Review] is enough. I mean, if I prepare from and only from Princeton Review, take every practice test from the book, and study the book carefully and meticulously, will I be able to get an 800?</p>
<p>PR has all the info you need for the 800, but that's going to require you to actually understand everything when you teach it to yourself. It really depends on how well you can understand the stuff. Some people can just go through it once and then start answering questions like a machine. Some people will read through the same material and just say "... ***?"</p>
<p>If you can answer the review questions at the back of each chapter with ease and do the full-length practice test well, you'll know that you're well-prepared. If not, you'll have to grind through all the practice tests you can find.</p>
<p>needa go out and buy a book soon</p>
<p>OK, fine, here's a more SAT-like problem.</p>
<p>Two 1 kg tomatoes are orbiting each other, separated by 2 m. A pair of 1 kg rocks are doing the same, but 4 m apart. Which of the following is true?</p>
<p>a) The speeds of the tomatoes and rocks are equal.
b) The rocks are moving twice as fast as the tomatoes.
c) The rocks are moving half as fast as the tomatoes.
d) The rocks are moving 1.414 times as fast as the tomatoes.
e) The rocks are moving 0.707 times as fast as the tomatoes.</p>
<p>Gm/r^2=v^2/r
Gm/r=v^2</p>
<p>rocks are moving slower so E?</p>
<p>yes, it's E. </p>
<p>And FigNewton, give us a hard one. I enjoyed that last one :P</p>
<p>Hmm, it's easy to make up a no-calculus problem that's too hard, but it just wouldn't be like any on an SAT subject test. (I <em>will</em> post one if you guys keep getting these so quickly!)</p>
<p>I'll try to find a balance between stumping lolcats and realistic questions :)</p>
<p>A machine gun can fire 50 gram bullets at 1000 m/sec. The machine gunner can exert a force of 200 N on the gun while firing. How many bullets can be fired in 10 seconds?</p>
<p>a) 20
b) 40
c) 50
d) 100
e) 200</p>