<p>You beat me to it ^_^</p>
<p>@benevolent4them Yeah I’m sure. I’ll just study throughout this month with PR and Kaplan and read my textbook some more and then get an 800! Best of luck with your scores, though. Be sure to bump the thread and let me know how you did!</p>
<p>Was the distance between the 2 plates 0.2m or 0.2cm?</p>
<p>qwerty,</p>
<p>i think it was 0.2 cm</p>
<p>Static friction (“stiction”) is between non-moving surfaces, and kinetic friction between moving surfaces.</p>
<p>Look at it this way, as the speed of the wheel increases, the friction will decrease, and the spring will be pulled less. Thus, the spring measures the wheel’s kinetic friction with the block. As the speed of the wheel increases, the force pulling the spring lessens, measuring the lessening of the kinetic friction.</p>
<p>Anyone had 8N for the tension on a string? (the set-up had 4N hanging and a big block on a surface with 4N frictional force or something)</p>
<p>Also for the magnet that attracted both ends of the metal bar I said that the metal bar could be magnetized. Anyone agree?</p>
<p>@Qwerty</p>
<p>Can’t remember details of the string tension one.</p>
<p>For the magnet being attracted by both ends of the metal bar, it was definitely that the metal bar could be magnetized.</p>
<p>The static friction force must be overcome by an applied force before an object can move. The maximum possible friction force between two surfaces before sliding begins is the product of the coefficient of static friction and the normal force: . When there is no sliding occurring, the friction force can have any value from zero up to “” . Any force smaller than “” attempting to slide one surface over the other is opposed by a frictional force of equal magnitude and opposite direction. Any force larger than “” overcomes the force of static friction and causes sliding to occur. The instant sliding occurs, static friction is no longer applicable—the friction between the two surfaces is then called kinetic friction.</p>
<p>-Wikipedia</p>
<p>Thus, it is nearly definitely (as far as I can reason based on the given information) true that kinetic friction is the answer to the rotating wheel, block, spring question.</p>
<p>so if I omitted 1 and got around 12 wrong maybe more… that would give me a raw score of 59 or less… how does that look for score? :/</p>
<p>[SparkNotes:</a> SAT Physics: SAT II Physics Score Conversion Table](<a href=“SparkNotes: Today's Most Popular Study Guides”>SparkNotes: Today's Most Popular Study Guides)</p>
<p>That’s a score of 770! I’m probably in the same boat, except probably 9 wrong and 5 omitted, or w/e. No school in the world is going to turn their noses up at scores that high. How’s the rest of your app looking? That’s the real question, now.</p>
<p>well. i have a strong sport. and volunteering services with international awards. and my academics are 93% average… as of right now. I do not know what my average will be for this first term…</p>
<p>lasern, that actually is not a normal physics scale. Going by the Princeton Review scale, which has tests that are very similar in difficulty to the one one that we all took, 60 and greater is an 800. A 59 is likely a 790.</p>
<p>^ Well, all for the better. The difference between a 770 and a 790 is negligible, but it would be cool if the scale is generous enough to give me an 800. It’s interesting you think this test was comparable to princeton review’s, because I thought it was quite a bit easier, which it should of been as princeton review admits their tests are above the actual difficulty. Of course, this is all very subjective, anyway. I guess we’ll just have to wait and see!</p>
<p>@ lasern
there is vast difference between a 770 & a 790. If someone goes for phy.,chem.,maths2 & gets average score of 23100 also , he will suffer drastically. And also 790>770.</p>
<p>sorry,it was 2300 & not 23000 out of 2400.</p>
<p>Ok the one with the rotating wheel and the block WAS NOT static friction. If it was static friction, the block would stick to the wheel and then the system would almost instantaneously be put out of whack. However, if the wheel was merely grinding on the block, then the force of kinetic friction can be countered by the force of the spring, and this force on the spring would measure the force of kinetic friction</p>
<p>Yah, obviously 790 is better, but in the general scheme of things, unless your intended college major is physics, the difference between a 770 and a 790 in the context of your application means very little to nothing.</p>
<p>Anyone care to venture a guess at the double hoop one? That is, if anybody actually still remembers it.</p>
<p>Loot , loot I’ve got an 800 :)</p>
<p>800 :). Got 800s for math 2 and chemistry as well, first time! Hoping it’ll be good enough :/</p>
<p>800 with 4 omit and 10 wrong based on only 65 questions discussed on this thread. Guys, this test had one hell of a curve.</p>