<p>@tito777: I forget what that question asked, but I think the answer was the direction of the current in the wire.</p>
<p>@neytiri</p>
<p>i dont exactly remember what it was so i dont know if im right but i think it was the magnitude of the force - if so, then its not the direction of current</p>
<p>well like i said, theres a big chance of me being wrong but yeah. hope it refreshens someones memory out there</p>
<p>Did it really say constant velocity?? SHOOT -_-…
I think I put in direction of the current… How does it affect the magnitude of the force?</p>
<p>@Kagesou
You are right. It talked about magnitude of the force, sot he magnitude will not change no matter which way the current flows.</p>
<p>I believe the direction of current was the correct answer, as the question was along the lines of “what doesn’t affect the magnitude of the magnetic force?”</p>
<p>yeah it was direction. the direction of the current would simply change the direction of the force (using right hand rules).</p>
<p>About the flag question, where the person is riding the bike north and the wind is blowing from the east, what do you guys think is the answer? I put SE, but gloomysheep said that it would just be east because the person was traveling at a constant speed. </p>
<p>For the mummy half-life question, it seems that most people agree with 5000 years as the answer, which is what I put. Agree/disagree?</p>
<p>Also, any predicted curves so far? The College Board had 60 raw score as a 800. Do you think that it’ll be that low or lower for this test (I have 3 skipped, at least 7 wrong if I got the flag question wrong…)? Someone previously estimated in this thread that >56 would be an 800, any other opinions?</p>
<p>the bike one was definitely south west. think of it this way: the person simply riding north would naturally case the flag to point south (due to air friction). the wind blowing from the east blows the flag more towards the west. the result is a flag which has south and west components, and pointing direction towards the southwest.</p>
<p>all right guys, the answer is 10N for sure.
Reason being, the spring scale connecting the two ropes simply measures tension. Thus its 10N. For example, suppose two people are playing tug of war, pulling each with 10N of force. Tension acts in both directions, in the opposite direction of the force. Thus if the force of tension was less or more than 10N the rope/people would move.</p>
<p>Alright then, I got 10N wrong 
I don’t think curve would be that low,;;; I guess like 59~60?</p>
<p>10 N, 20N, idk but I know I got it wrong, and yeah the one with the current in the wire, I put direction change, it shouldn’t affect the magnitude of the force…the flag pointed south west, I am almost 100% sure of that</p>
<p>Also for the aging, half-life, I wasn’t sure I put the answer that was between five and 5000 it was like 500. Since the mummy was about 5000 years old, I felt like the most accurate would be one less than it…idk though, because I see a lot of people say its 5000. Really, 60 minutes presses you for time and you end up missing the easy ones … ugh</p>
<p>I don’t think there was choice for 500… Because other choices were too far away from 5000 years, I chose 5000 as well…</p>
<p>Oh and I remember a question with graph that wasn’t clear if it was 0.4 or 0.6… Does anyone remeber that question? And what are the exact answer for bending mirror question, wave interference on point P, and refractions in the glass (the question with arrows) ??</p>
<p>yeah i think i chose .4 to do the math, it seemed closer. but i was surprised college board didn’t include graphing lines or anything. i put you can’t tell because the screen isn’t parallel (all of the problems I’ve ever seen they have been parallel), but i think that may have been wrong.</p>
<p>For the mummy one, I read it as “You know the mummy is ABOUT 5000 years old. You want the exact age.” So I chose the shortest half-life (so you can figure out most precisely the age?) I don’t know if my answer is correct, but I am pretty sure a 5000 year half life would not be very accurate if we already know it is about 5000 +/- some number of years.</p>
<p>hey for the last question what did you guys put? i think ithe question was about momentum and under what conditions does it become conserved or something like that. </p>
<p>also, do you guys remember the fish bowl one? where the light is refracted or something.</p>
<p>thanks!</p>
<p>I wrote it’s conserved every time…</p>
<p>It is conserved whenever external forces are absent.</p>
<p>wait was there a choice “whenever external forces are absent??” Oh shoot… I was going to quickly that I might have missed it;;</p>
<p>there was something similar to that, but i still think that “momentum is always conserved” is the right answer. the question was about two masses colliding, with one initially at rest i believe. this is true because momentum is always conserved, as no external forces are really acting on it anyways. that was another one of the ify questions along with the half life, 10N/20N, and a few others.</p>