June 2008 - Physics

<p>Guys the circular field lines is correct. I reread the question multiple times to make sure i wasn't mistaken on the direction of the current. That + signified the positive end of the battery on top, with the wire connecting to the - end of the battery on the bottom. the positive charge will go down from + to -, thus the current was down and the field lines were correctly drawn. what did you guys put for the magnet/iron filings?</p>

<p>i thoguht they both attracted the iron filings, but that was just based off of a vague memory of a lab we did in class two months ago..</p>

<p>I just guessed...</p>

<p>I put "attract south pole, repel north pole"</p>

<p>I think the south does and the north doesn't, but again I'm not positive.</p>

<p>^ Yeah, that's what I got</p>

<p>I was thinking that since the magnetic field lines start from the north and go to the south, the filings would be attracted to the south</p>

<p>I don't know...</p>

<p>that is what i guessed</p>

<p>1/9 g for somthing?
2.5 speed to throw something on the moon?</p>

<p>Hey, OMG, i thought the test was super hard than the previous tests from Collegeboard (i took one in dec last year too). Geez...all the questions were soo weird and obscure. We should like send a letter to collegeboard asking for the curve to be super lenient. :( (feeling so bad here)</p>

<p>it said the magnet passed over them though right?
wouldn't both poles attract the filings?
and if not the wording was really stupid</p>

<p>I've got a few questions:
1. Zinc and water. Why closer to zinc temperature? Specific heat?
2. Orbiting in a circle has increasing speed at constant rate or something. Tangential and towards center component? Anyone remember the wording and right asnwer? I knew it wasn't just 'toward the center' cos it's 'increasing speed' orbiting around the circle.
3. Pulley (smaller square on the right has larger mass as it is higher above)
4. Mirror’s normal, incident and reflected all on same plane
5. Goes north. Object goes east. Direction relative to watcher?
6. The charges diagram question. Where the charge is zero...i put the diagram where the diagonals were the same sign (which was, i think B)
7. The charges diagram question. Where it had the greatest magnitude (E?, the one with 2q charges...but can anyone explain what the answer one and how they chose between th two 2q charges diagram)?
8. fractals - insect body
9. insect can see UV light
10. looks at tree (or something) from under water. the object looks further/nearer?
11. F/m or m/F or mv2/F...forgot, anyone put F/m for acceleration? remember that one?
12. waves question: period of 2T...i put the point at 2 wavelengths.
13. electron capture to become a helium atom? I put alpha particle
14. mass charge ratio: positron
15. momentum question: moves to opposite direction or smaller magnitude?
16. when gravity is taken off suddenly, satellite moves at tangential?
17. Formula of y=v+ut+1/2at2 or whatever...skipped that. ANYONE?
18. electron (it was electron yea?) moves towards the positive plate in a curved path (the charged plates question). was the positive plate the upper plate in the question? i forgot
19. the diagrams picking question in the start of the test: what did you guys pick for the vertical velocity versus time for the ball released from a projectile (going down)? the straight line going down (not curved)?</p>

<p>someone should make a chatroom</p>

<p>*3. Pulley (smaller square on the right has larger mass as it is higher above)
*</p>

<p>Why would the heavier mass be higher up? Shouldn't it be the other way around?</p>

<p>IIpitch: if they're static, shouldn't they have the same wight?
rotational equilibrium: m1 * r = m2 * r
or I can be wrong >.<</p>

<p>response to student91:
I've got a few questions:
1. Specific heat?
2. tangiential acceleration constant (that's what I remember...)
3. I thought they're equal, but well...
4. Mirror’s normal, incident and reflected all on same plane
5. northwest
6. you're right
7. I picked D where they all have magnitude of 2q. You'll have two force vectors of magnitude 2F forming a right angle, whereas E gives you 1.5F forming a right angle, thus D is gibber.
8. no idea
9. what's that question?
10. I think you see is higher above the actual tree. Someone confirm this.
11. I did F/m. didn't read the question carefully.
12. why is period 2T? or am I on the wrong question.
13. alpha
14. positron
15. smaller magnitude?
16. satellite moves at tangential?
17. moving down an frictionless incline...someone confirm this please.
18. was it electron???? oh no...I picked toward top.
19. vertical velocity versus time: linear</p>

<p>IIpitch: if they're static, shouldn't they have the same wight?
rotational equilibrium: m1 * r = m2 * r
or I can be wrong >.<
</p>

<p>idk I was 50/50 b/t same weight and lower one is heavier.</p>

<p>Hmm maybe the curve will be really nice or do people just always get owned by SAT II Physics.</p>

<p>I was annoyed.
I took 3 practice tests and the most I had ommitted was 5, this one I just fell behind and I reached like 60 something. I think I counted and had 10 omitted.</p>

<p>I took the Physics test first since I was most confident in that because it was basically the only test I actually studied for.
Didn't work out well. Math & Chem turned out much easier.</p>

<p>llpitch: would you remind me of what the question was? I'm lost now.</p>

<p>@student91
here's what i said
1) water has greater specific heat
2) can't remember exactly what i put
3) i said they were equal mass. potential energy doesnt matter in this case and the height doesnt matter since the wire was massless
4)agreed
5) i said southeast
6)sounds right, maybe D for the greatest on the next question?
7) D, E had one point that was only q while D was all 2q
8) insect
9) dont remeber insect/uv light problem
10) looks at bird, i said it appears above where it actually is
11) F=ma so F/m makes sense. don't remember that specifically
12)yes, i think B was on the rise too
13)alpha particle is 2 protons/neutrons so yes
14)yes
15)smaller magnitude
16)yes
17)going down slope constant acceleration?
18)parabolic up,
19)i think so</p>

<p>What is the worse POSSIBLE curve for an 800 on the SAT Physics test??? (even if not probable but worst case scenario). and also, what is the best possible curve for an 800 on the SAT Physics test?</p>

<p>by best, i mean that you can miss the most points
and by worst, i mean that you can miss the least points</p>