<p>what was the premise of the question? i just remember my answer</p>
<p>and i got 4/3 too on that one
because it was 2/1.5
index of refraction can never below 1</p>
<p>and i can’t believe that one question asked for the diagram of the magnetic field around a solenoid!! physics b doesn’t even cover solenoids =/</p>
<p>nvm, aqxyguy explained it</p>
<p>i don’t remember there being a question about it accelerating upwards.</p>
<p>there were two questions. one with it accelerating downwards at 4.5 m/s^2 and one in free fall. it was a pretty basic problem, accelerating down at 4.5, its less than the mass, but not nothing. and in free fall, its nothing.</p>
<p>^yaay i got it right</p>
<p>if the physics test was straight up like part b, i’d have done fine…</p>
<p>what did you get for the potential difference between teh two capacitors??
and the question about the rate of heat transfer?? what would decrease the rate of heat transfer?? i put increase the cold temperature</p>
<p>for people who have taken the sat physics before… what was your general feeling walking out of that exam and how did it compare to your actual score???</p>
<p>yeah, since change in Temp is directly proportional, if you increases the cold temperature, change in temp will decrease, thus decreasing H.</p>
<p>I put 1.5 V for the potential difference, but this was just a guess. I know Capacitance equals Q/V, but I didn’t know how to use this to find the answer.</p>
<p>After a long time, the voltage of the capacitor will equal the voltage of the battery. One end is connected to a 1.5V end, and the other side of the capacitor is connected to a 0V end. Thus 1.5V</p>
<p>The ratio of velocities was definitely 3/4; X had a higher index than Y, so V<em>x < V</em>y, so V<em>x / V</em>y < 1… conveniently there was only one answer choice less than 1</p>
<p>For the magnet moving through the solenoid, the current should switch directions. As it’s moving in, the flux is to the right and increasing, so we get an induced current which creates flux to the left. As it’s moving out, the flux is still to the right (since the magnetic field lines point towards the south pole), but it’s decreasing, so we get an induced current which creates flux to the right. By the right hand rule, these currents must have opposite directions. </p>
<p>For the elevator one, i think there were 3 questions: accelerating downwards (less than weight but not zero), constant velocity (exactly the weight), and free fall (zero)</p>
<p>And i think the physicist is Copernicus: Huygens studied optics, Doppler did sound, Michelson found the speed of light (Michelson-Morley experiment), and Newton did stuff with both light and sound</p>
<p>i hate taking tests where i’m not 100% sure about at least 90% of the questions… >=[
well i guess the physics subject test isn’t designed to be that easy which is why it has such a good curve</p>
<p>ohhh and what about the tests that asked which of these have variables that are not inversely related…choices were like gravitation force, something about a spring, and something about velocity and acceleration…it was one of those I, II, III, IV questions =[</p>
<p>then the question about the ratio of nodes to antinodes in a tube with a closed end…is it 1:1?? </p>
<p>and then the question about the double slit experiment… if you use light with a different wavelength, then stuff stays the same right?? X=mwavelengthL/d</p>
<p>there was also a question about the spring equation Fs=kx…i just can’t remember the question</p>
<p>then the question about the ways that heat can be transferred…choices were like convection…uhh and some others…i put all of the above</p>
<p>pigsatsea: I think it was I only (the gravitational force). Also, I got 1:1 as well.</p>
<p>^ but isn’t the force F proportional to 1/R^2?? cuz F=Gmm/R^2</p>
<p>Yep, that’s correct (that’s what I meant by gravitational force).</p>
<p>ohhh but the question asked for which of these is NOT inversely proportional …i picked the one with velocity and acceleartion</p>
<p>i really hope curve will be lenient
i skipped 7 and believe missed at least 10
i hope this would get me around 780</p>
<p>The choices were gravitational force vs. distance, light intensity vs. distance, and something vs. time in projectile motion… the first two have an inverse square relationship, but i don’t remember if the question was asking for the ones which do or the ones which don’t -_-</p>
<p>I think it’s 1:1, but i wasn’t sure about that question</p>
<p>If you change the wavelength, the color of the light changes, but the intensity/brightness doesn’t (brightness depends on amplitude, which is independent of wavelength/frequency/speed)</p>
<p>The spring equation question was in the first part of the test, where you had to decide which equation of the form y = k * f(x) matched the relevant formula- the two questions were force in terms of velocity and spring force in terms of distance stretched, which were both y = kx</p>
<p>The heat transfer question had conduction, convection, and radiation, all of which are possible</p>