<p>yea i put speed too since the wavelength is the circumference of the circle and if they use a stopwatch or something they’ll get the frequency (1/t) and hence the speed</p>
<p>and i said the potential increases for only the one where it moves closer and that has a net force…while the other two dont</p>
<p>btw what did you guys put for high speed rail and ohm’s law?</p>
<p>imaBOSS It wasn’t clear if you guys had decided what was right, since other people said otherwise. Sorry for being redundant I guess.</p>
<p>nah nah its fine i was just confirming it for you…sorry if i sounded harsh</p>
<p>other questions guys…umm wat did you guys put for the voltages of the three capacitors? and what was the equivalent capacitance?</p>
<p>did you guys get polarization for the answer on any of the questions?</p>
<p>OH and the sled one?</p>
<p>how about the one with space shuttle with the laser beam?</p>
<p>for the voltages, i got 6, 3, 3?</p>
<p>the sled one was confusing…but the first question pertaining to it i put (toward dock, toward dock). the space shuttle was 3* 10^8 m/s (Einstein’s 2nd postulate). and yep i got the same voltages…equivalent capacitance was 8 microfarads?</p>
<p>I put 3 for the one in parallel and 6 for the two in series</p>
<p>hmmm, i got forward, backward, for the sled one</p>
<p>The sled one was weird. It seemed like it should be the boy stays stationary and the sled moves away, but that wasn’t an option. I just picked one where they had opposite directions. </p>
<p>The space shuttle and laser one was just 3 x 10^8. Speed of light.</p>
<p>And sadface, I don’t think so. Do you remember the question?</p>
<p>The equivalent capacitance was 8 pF, the individual voltages were 6, 3, 3. (I think).</p>
<p>so no one got polarization as one of their answers?</p>
<p>Why does the sled move backwards? Didn’t it say there was no friction? I put forward and not moving.</p>
<p>i don’t remember the questions</p>
<p>I’m also pretty sure if you cover the bottom half of a lens, the entire image will still appear?</p>
<p>yea i said forward and backward too …i thought it was because of conservation of momentum since all the other questions after it were about momentum but idrk </p>
<p>and yea i said 6, 3, 3 …and 8 for equivalent capacitance</p>
<p>and i said 3 x 10^8 for the laser one</p>
<p>EDIT: and yea i said the entire image would appear for the lens one</p>
<p>Yankeesfan: there was no friction between the sled and the ground. There was still friction between the sled and the boy. So, momentum had to be conserved (since the ground couldn’t exert any external net force, which I think was another question :P)</p>
<p>Sadface9: yes to the lens question. And I think that question dealt with what property of light makes it seem like a wave? Or no, that was like a roman numerals question.</p>
<p>darn, i’m going to assume i got the question with polarization as an answer choice wrong then. </p>
<p>3 wrong 3 omitted. still considering if i should cancel :</p>
<p>Oh yeah, what really confused me was the number 4 about “speed at the ground.” the answer should have been all of them, right? since they had the same kinetic and potential energy at the beginning.</p>
<p>Sadface: yeah. All same speed at the ground. That was a nce question. :)</p>
<p>@sadface9 yea yea i was confused too…but i was divided between the arrow straight down and arrow straight up</p>