<p>wat was the question about the walls and which had the least heat lost/time ratio; was it 17oC, 9, 0.2? my reasoning is that had a high volume and started off at a lower temp.</p>
<p>no that's not the question, i just remember choosing fission LOL (incorrectly, apparently)</p>
<p>yes! out of phase! what does that mean? i selected the picture that had two waves that were identical but were slightly distorted from each other, like one had an intersept at 1 and the other at 1.1.. so it was like a copy that was picked up and moved down the line a little bit.</p>
<p>Does anyone know if this is right?</p>
<p>I chose the same answer as you for the question about the walls, hewashere.</p>
<p>Do you remember if the question was in the beginning, middle, or edd, sp33d12?</p>
<p>"yes! out of phase! what does that mean? i selected the picture that had two waves that were identical but were slightly distorted from each other, like one had an intersept at 1 and the other at 1.1.. so it was like a copy that was picked up and moved down the line a little bit.</p>
<p>Does anyone know if this is right?"</p>
<p>Yes! The one where they were the same but one had a shorter period than the other? I'm nearly sure that's right.</p>
<p>That's definitely right, that's the graph i chose</p>
<p>hewahere, i picked the last answer choice, it had 17 degrees, but less surface area, and it was thicker than the other choice for 17 degrees</p>
<p>edit: i think it is the same as you picked</p>
<p>anyone remember the magnetic field question?
it had three diagrams and some wires?</p>
<p>like:
I.</p>
<p>X /----- \X
(X X X XX )X
(X X X XX) X
X\ ------/</p>
<p>II.</p>
<p>arghh i can't draw them can anyone rember i thinki put I and II or I and III
???</p>
<p>i hope i really did get all of these questions right! lol... mm i need a good score on this test b/c i completely bombed the writing test ( i did the last 30mc's in 12minutes)</p>
<p>i put I and II only...</p>
<p>ok and there was another question, like a wave can't look like this...</p>
<p>and i put a straight line.</p>
<p>is that right?</p>
<p>ah... mmm i didnt put that one... i put the one that had two troughs and two crests.. all of the others have two and one....</p>
<p>i think you are right if it asked what the wave could look like, did it ask what the rope could look like? if so the waves in the rope could be stopped... so it is just a line</p>
<p>
[quote]
ok and there was another question, like a wave can't look like this...</p>
<p>and i put a straight line.
[/quote]
</p>
<p>That's what I put, too. The question takes a picture of a standing wave at one particular moment. When it looks like a straight line at one section, it should look like that throughout the string (for a standing wave). Thus, it ain't possible hence the answer.</p>
<p>yea i think i'm right but can anyone else confirm this?????</p>
<p>straight line graph for one of the waves questions??</p>
<p>huh, which did you put?</p>
<p>Sadly I skipped both of those. I didn't quite understand was that picture they showed of the string just part of the whole string where the standing wave was taking place?</p>
<p>ok thanks asbereth, so the answer was:</p>
<p>the graph with a line</p>
<p>ah! it can be a straight line like said b/c it is a standing wave.. the trough and the crests approach eachother and at one particular instant.. they create a straight line...</p>
<p>i think i missed this easy question that said that A is proportional to B squared and what graph should we look at to see a line?</p>
<p>the answer was A versus B squared right??</p>
<p>
[quote]
ah! it can be a straight line like said b/c it is a standing wave.. the trough and the crests approach eachother and at one particular instant.. they create a straight line...
[/quote]
</p>
<p>A standing wave can be a straight line at one particular instant, but the whole rope should look like a straight line as well at the instance. Whereas, the question shows a pic of some certain section of the rope that's not a straight line. IIRC, as a standing wave, we can't just have part of the rope looking like a straight line at one moment, while the others don't.</p>
<p>i think i am right... the graph that goes like this cant be it:
/\/\
this is because the original was like this
/\/ and you cant just create another segment in a wave... i hope</p>
<p>lol</p>
<p>sp33d12... it should be a vs sqr of B... b/c the question asks that would create a line... and in the original equation the relationship b is already squared.. so to make them comperable you have to take the square root of it.</p>