<p>I put between. I think proton and electron have the same force exerted on them, but proton has a larger mass, so the acceleration should be smaller. Not sure about it though.</p>
<p>^ That’s what I thought too</p>
<p>^so good;)
Am I the only one to put refraction for all of the three light phenomenon explanation questions?</p>
<p>The first two were, the third was scattering.</p>
<p>For the problem with the collision of the balls why was it not all 3 for which ones conserved momentum? I know the second one definitely conserved momentum because the balls just switched velocities, and in both the 1st and 3rd ones the 2nd ball that was at rest changed to a velocity of sqrt of 2 and the 1st ball changed from 2 m/s to sqrt 2 m/s. So if in the 1st and 3rd ones all the velocity changes were the same, and the all the balls had the same mass, why is momentum not conserved?</p>
<p>^ Momentum must be conserved both horizontally and vertically. The third one does not meet this criteria.</p>
<p>That makes sense, thanks rabbit5145. Was the KE conserved for all three though?</p>
<p>So it looks like only a few people are having the “I did ridiculously worse on this test than all my practice tests”. So if I omitted 15, literally, and am unsure of others (I know at least one I got wrong from reading this), should I cancel my score? Lots of the colleges I’m applying to don’t do score choice… but I only have November and December left.</p>
<p>Pie of Apples, you could still end up with a high 700s score if you did not miss that many, so I would just wait and see what you get.</p>
<p>But I feel incredibly unconfident about my other scores, and I know some colleges will be able to see all my score, even those I don’t send.</p>
<p>And even if I get in the low 700s, which is much more likely, I wouldn’t be particularly pleased. I mean, I did well in Physics H, I’m in AP Physics C, and my school is notoriously difficult. I should be able to get a better score…</p>
<p>And what was the question that was “scattering”, not “refraction”?</p>
<p>@PieOfApples: Sorry, but it’s definitely scattering. Rayleigh scattering, to be specific.</p>
<p>No, I’m asking what the question was. I know I put refraction twice, the third might have been refraction or something else… I need to have the question. Do you remember what it was?</p>
<p>And I’m unconfident about my other answers, not scores. Whoops.</p>
<p>Ooh okay sorry about that. I think it was something along the lines of “Sunlight becoming red in the evening”</p>
<p>On the question where the ball slid across the rough patch with lots of friction, did you get an average force of 18 N and then get that the ball would travel .5 m instead of 2 m, if it were going 1/2 as fast?</p>
<p>Not to give anybody hope, but 10 wrong is very likely an 800. That’s 63 raw. 59 raw was an 800 on the blue book test. 63 raw was an 800 on the old blue book test.</p>
<p>Do they always round the raw score up? Like, if I get a 59.25, would that become a 60?</p>
<p>No. They round normally. 59.5 would be 60. 59.25 would be 59.</p>
<p>Do you know about what translates to a low 700 score? Like 720 or 30?</p>
<p>You can definitely get about 15-20 questions wrong and still get around a 700. And if you get everything right, you can skip a lot more than 20.</p>
<p>Does anyone else remember other questions? I remember the last problem pretty well. It was the one about Kepler’s laws that the orbiting planet sweeping out a section of area. I’m pretty sure the true statements were the ones about the two area sections being equal, and the velocity being greatest when the planet was closest, or something like that.</p>