<p>plane mirror...upright, virtual, same size</p>
<p>yep, I put the same thing for that one.</p>
<p>I think there was an error on the test. There was a question where it said the Earth’s diameter is doubled, but the mass is kept constant, and it asked how the force changed. It should’ve been quartered right, not quadrupled?</p>
<p>yea, i thought that was strange too, it should be quartered</p>
<p>I thought so too at first, but i think the answer is unchanged… it’s the distance between the planets that matters, not the radius of either one (as long as they’re decently far apart)</p>
<p>Yup, it remains unchanged. because the mass doesn’t change and the distance between the planet’s center doesn’t change either.
What about the question on the rate of change of Joules per hour (or something like that). I ended up putting like 2.7 x 10^-7, but I’m not sure if it was the 1.8 answer.
I said y=kx for both choices in the two part question where at asked for the relationship between acceleration and constant mass, and the force created by a spring.
Was one of the answers Newton? (as in the person Issac Newton)</p>
<p>Also, I remember getting 4/3 for the index of refraction question</p>
<p>wth
i got 3/4</p>
<p>plane mirror…upright, virtual, same size is this right. i got 3/4</p>
<p>does anyone know the ans for
does a smaller mass affect pendulus period?
and, why is red light refracted the least?
and, the frequency of wave in pipe with one end closed and one open?</p>
<p>i am verifying this: I remember getting 4/3 for the index of refraction question</p>
<p>oh no…
do u guys think curve will be lenient this time?
i found this test to be extremely difficult</p>
<p>only length and gravity affect pendulus period.
for why is red light refracted the least, I was able to elminate pretty much all of them except the one I got, which was like red gets dispersed the least.
The ration was 1:2 or 2:1 depending on the order that it asked the ratio. This is because the wavelength with both opened was equal to half a wavelength and the the wavelength with one closed is a quarter wavelength.
For the refraction question, did it go from n=2 to n=1.5 or the other way around?</p>
<p>so if freq. on the open pipe was 100Hz, the freq. on the one-end-closed pipe is 50Hz?
n=2 was given first… idk about which was on top for the ratio…</p>
<p>oh, so I guess that it was 3/4, because as light moves from a higher index of refraction to a lower one, then speed of light increases. i guess i just divided 2/1.5, when it should have been 1.5/2
Did anyone else think that the magnetic fields through the pieces of paper were kinda ridiculous. I couldn’t get the one with the coil running through the paper.</p>
<p>Since the current was CCW, I put that the field was traveling through pointing to the right. I thought it was a pretty tough exam. Hope I can stay in 750+ range.</p>
<p>do u remember if 4/3 was choice D?
yeah, i didn’t get the + plate perpendicular to ppr and the e-, and i think i missed the solenoid one too</p>
<p>Who was the physicist???for the light and sound studies</p>
<p>I think it was Copernicus.</p>
<p>i hope the curve is lenient.
this made me cry…
haha</p>
<p>this test was crazy in the way that it’s nothing like the material in teh princeton review…alot were definitions and i was just like…uhhh ***?? where does this come from??
what did you guys get for the last question?? it asked for the total kinetic energy at the end of the ramp, i got like 45 joules</p>
<p>and the one with the graph of the temperature of the substance?? that confused me…</p>