  # SAT 2 Physics?

<p>So how'd everyone do on the physics? Was I the only one that found it difficult? Anyone wanna review their answers with me?</p>

<p>I did not find it particularly difficult. It was easier than the test at sparknotes tests in my opinion.</p>

<p>How much are you expecting?</p>

<p>Im hoping for at least a 600. It's been a year since Ive taken physics and I didnt get a chance to review for the SAT. But I feel like I answered too many questions that I wasn't sure about.</p>

<p>I have answered at least 5 questions I wasn't sure about. I am expecting 750+, maybe an 800.</p>

<p>Do you happen to remember any of the questions you were sure about? I want to check my answers with someone to higher my self-esteem. & Did you answer all the questions?</p>

<p>I skipped 10 questions since I didn't study for this and English is a second language so I didn't understand every question. Still hoping for at least a 700 which shouldn't be to hard. Perhaps even 750 is in my range.</p>

<p>I answered all the questions, yes. I am pretty sure that I can not have more than 10 wrong, hence my hopes for a 800 score. \o/ But time will tell. </p>

<p>Oh and if you can remember anything about the question you had a doubt in, let me know and I will see if I can remember.</p>

<p>Also, if you happen to remember the question with the capacitor and resistor. We had to tell about two graphs, charge on capacitor vs time, and current through resistor vs time. What did you answer in that?</p>

<p>I believe the charge on capacitor vs time was the non-linear curve that was increasing and the current vs time was the non-linear curve decreasing. What was the answer to the question involving the first law of Thermodynamics? Is that energy conservation?</p>

<p>I thought that charge would be constant, and that current would be decreasing in a curve.
And for the first law of thermodynamics, I said that two of them were right: one about internal energy, and another one about how energy is transferred from one form to another form but not lost. </p>

<p>Oh, and I was wondering about circular metal question...When metal expands does it get thicker? And there was a graph voltage vs. pressure. when does internal energy get biggger?</p>

<p>I guess I ****ed on that capacitor question then. >_></p>

<p>byahn is right about the first law question. </p>

<p>Also, I think the metal does get thicker but I am not sure.</p>

<p>What about the question in which a spaceship is traveling at 0.7c, and a probe is traveling at 0.6c relative to the ship. What speed of the probe is observed by someone on earth?</p>

<p>Does anyone recall whether or not Question #70 is next to Question #71? I fear that I might have left out the last five questions but I find this to be unlikely, and I might just be confusing this with the chemistry test. </p>

<p>And uh, for the one with a man pulling a 100N weight at 30 degrees up 3 meters using a pulley, is the answer 300 J?</p>

<p>Yes 300J</p>

<p>Few questions:
- Which I,II,III make a magnetic field.
1. current wire
2. moving charge
3. i forgot (it was obvious wrong)</p>

<p>Was it both current and moving charge?</p>

<p>Also the pulley problem, which masses have the highest acceleration? i put 2 and 1</p>

<p>Current and moving charge.</p>

<p>And for the pulley, I put 0.5 and 2. Was it more complicated than it seemed?</p>

<p>Also- the metal ring. I put all three, but honestly that was just guesswork.</p>

<p>For the pulley one you had to calculate the net force by converting the force on the block to the vertical force. Then you used Fnet = ma.</p>

<p>For the spaceship one i said that the probe was traveling between .7c and c because it can't go faster than the speed of light but it's faster than the spaceship.</p>

<p>But the answer is still 0.5 and 2, right? The smallest mass with the biggest mass?</p>

<p>Is this question:
"- Which I,II,III make a magnetic field.
1. current wire
2. moving charge
3. i forgot (it was obvious wrong)"</p>

<p>one of the questions in the 70s? Just wondering because I don't recall seeing this one.</p>

<p>i forget....</p>

<p>The current wire and the moving charge would make a magnetic field. The stationary electric charge would not. I was a scrub and got that one wrong. LOL</p>

<p>Out of the tests I took, I'm sure I did the worst on this one. In Advanced Placement right now, but haven't covered electricity and magnetism or circuit lol.</p>

<p>At least I included that warning in my college applications. :D</p>

<p>The magnetic field question is definitely current in a wire and moving charge. Don't think it was in the 70s.</p>

<p>Does anyone remember the question that went something like this:</p>

<p>Which of the above graphs represent a physical quantity by the area under the graph?</p>

<p>I know for sure the velocity vs. time graph is one answer, but there was another option with Force vs. spring constant or something.. anyone?</p>

<p>I believe the other one is Force vs Mass. I don't recall the remaining fourth relationship, but I think it wasn't the answer for either of the two questions. </p>

<p>Force / Mass = Acceleration
Velocity / Time = Acceleration
And I believe the question is which one had a common slope (?), so those two is the answer to the first one.</p>

<p>"Which of the above graphs represent a physical quantity by the area under the graph?"
Answer should be Velocity vs Time graph.</p>