<p>agree with bco09
except that....in question 5, which one was the observer? the one travelling north or east? I thought it was the one traveling eastern...</p>
<p>why southeast?
isn't it northeast? Going north, and the thing was going east, so isn't it northeast?</p>
<p>thanks for all your responses, btws.
this test was HARD. all my friends say so...
SO, if collegeboard doesn't give us a NICE NICE curve...we're all :(.
Please, collegeboard, if you're looking at this board, give us a nice curve!</p>
<p>student91? for the observer going east, the other one goes north east, you don't add up the vector, you do substraction.
Think about it in this way: they start at the same point and A travels eastward while B travels northward. after a while, what is their relative position? B would be northwestern to A, and A is southeastern to B.</p>
<p>ummm isnt it, one thing is going east, the other north. so from the perspective of the one going east, the other one is going northwest. thats the only logical way i see it.</p>
<p>Do they decide the curve subjectively? I though the curve is based on others' objective performance...</p>
<p>questions:</p>
<ol>
<li>what did you put for the BIRD AND THE POOL question</li>
<li>i said northwest lol</li>
</ol>
<p>Wavvy, are you sure the observer goes east? i thought he went north and the object went east? thanks</p>
<p>the observer goes east, the object went north. so it was northwest??</p>
<p>...i don't know.</p>
<p>student91: I did it that way but was scared when I saw bco09s's resopnse, and then was relieved when I saw stueydue's response...</p>
<p>bird and pool was one of the ones on our list. the bird appeared to the guy above where it actually was. draw a diagram of light striking water and the angle of refraction > angle of incidence and it should be clear</p>
<p>it's northwest.
i did this experiment during the test: i moved my pencil forward and my head right, and my pencil looked like it was going forward and to the left. hence, northwest.</p>
<p>and tbh i'm not sure about the direction, i just know i put southeast and thought that the north-bound plane was observer. what did u guys put for the photographer/tree/magnification distance? i think i put .025m as size of tree. I used M = -distancei/distanceo, but my mental math really was shot by then</p>
<p>the object sees the observer going southeast =P</p>
<p>My oversight in this test (not really useful to the others...but maybe it can be a bloody lesson for the upcoming test takers...)
Not reviewing the oscillation direction on a mechanic transversal wave. I learnt it like three years ago and didn't remember much.
Not knowing what fractal is
Thinking that wherever a positive sign is indicates the direction to which the current runs (this is so far the most stupid one)
Not knowing the english word protractor
...more to come >.<</p>
<p>was it asking which way the observer sees the object or the object sees the observer. and who else agrees that the observer was on the eastbound thing??</p>
<p>stueydue: yes, the observer was on the eastbound plane</p>
<p>bco09: yeah I like the 0.025 answer too...I invented a formula and somehow just got there >.<</p>
<p>so if the observer was on the eastbound plane then it would be northwest correct??? directed to eleiese or anyone who is on the same page as us. seriously you guys really freaked me out about this question lol it shouldnt have this much debate on it</p>