October 2009 SAT II - Physics

<p>I think you glanced over III because I remember it saying U = Q + W not Q - W. I got only II for this.</p>

<p>the heat equation is Q=U+W, what are you talking about?</p>

<p>U = Q + W when W is work done <em>on</em> the object, I believe, which is what the question was saying. I remember worrying about that. I think. Ahaha.</p>

<p>lol typo, yeah that’s what I meant.</p>

<p>wait but Q = U + W is right…it’s II and III isn’t it?</p>

<p>Oh and for the equivalent resistance one, was it 2 1 ohm resistors connected in parallel and then in series witha 2 ohm resistor?</p>

<p>For the elastic collision, why doesn’t the ball move straight down? why does it move in the x-direction as well?</p>

<p>The ball moving vertically has no force to cancel out the force of the ball moving right. So the ball moving right will move SE after collision</p>

<p>for the incline question with graphs… was the graph Energy-time or Energy-displacement?
if the graph was energy-time, PE should be inverted U, if the graph was energy-displacement, it should be inverted V</p>

<p>I am soooo stupid.</p>

<p>I took the test going in with only 3-4 months of physics (2 of these were at an advanced course at a community college and the rest was just at my high school, where we are only beginning Force and KE and PE.)</p>

<p>So i went into the test with basically zero prep and danggggg i got slaughtered.</p>

<p>I guessed on 8/10 questions and im wondering if its too late for me to have a chance in physics.</p>

<p>I scored 700+ on 4 other (nonscience) sat 2’s and i really need to get a 700+ in physics sat 2 if i want to become an engineerrrrrrrr</p>

<p>so aaaaaa what should i do?</p>

<p>btw: i guessed C on the last 5 questions, did i get any of these? :/</p>

<p>I figured since its a 1:4 ratio that i might as well guess, and by the rate i was going on the test it probably didnt matter.</p>

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<p>^ If you only guessed on 8-10 q’s, don’t worry, because the curve in physics is -12 = 800…, -30 is the published value for 700, but if I were you I’d just sign up for the november SAT anyway, you can rush the scores from Nov and they’ll be there in time for EA/ED schools.</p>

<p>no, i meant i guessed on 80% of the questions.</p>

<p>interference refraction deflection defraction</p>

<p>they all sound teh same to me :/</p>

<p>i still cant believe i went in there with almost 0 prep haha >.<</p>

<p>i did get some right i think, like the block going up and down and the point A one.</p>

<p>but other than that…im scared tbh</p>

<p>oh…well if you get 2/3rds of the q’s that’s a 700, but if you want a good score just sign up for november and get a pair of review books and do them straight through (PR + Barrons); they help a lot.</p>

<p>Do you guys remember the question regarding ‘what is the minimum apparatus required for measuring…acceleration of the system’? was it only balance?</p>

<p>eh no…meter rule and stop watch</p>

<p>I’m not sure about it…i thought we could just use a=F/(M+m), where F=mg. so, using that, only balance would be needed. how did u think about it?</p>

<p>No, I believe you needed both meter stick and stopwatch.</p>

<p>This month’s PHYSICS was pretty hard, compared to practice tests…</p>

<p>I too chose metre stick and stopwatch.</p>

<p>i just chose the balance…</p>

<p>whats the curve on physics? who knows…
cause i felt the worst on it</p>