<p>We should make a compilation. When are we allowed to talk about them?</p>
<p>Anyone take them today?</p>
<p>me.. but are we allowed to talk abt it yet?</p>
<p>in any case, i don't think i did too well so don't really want to discuss it!</p>
<p>Let Us Discuss It!!</p>
<p>what did u guys put for your answers? I omitted 5...</p>
<p>Anyway, we can start.
For the question that gave you 20 and then 2 grams (i think), then asked for the PE ? The answers were something like 0, 10, 20, 40..
Anyone put 10?</p>
<p>physics was crazy....i'm blanking on teh questions...</p>
<p>but anyone rmbr the plane and the asteroid one?</p>
<p>i do...</p>
<p>L=Lo(1-root under v2/c2) ?</p>
<p>i'm sure i did it wrong... i chose the slowest one!</p>
<p>I think it's actually L=L_0/...</p>
<p>So you have to divide. (length contraction, as opposed to time, which expands.) I believe I chose the fastest ship.</p>
<p>well the question was where would there be the greatest lenght measurement right?</p>
<p>well isn't true that LENGTH contracts as speed inreases....if it is then well shouldn't the lenght be the greatest on the asteroid itself.</p>
<p>i chose the fastest ship first.... then i again decided against it! i think it has to do with my wrong formula!! :(</p>
<p>Lenght contracts from the point of view of the asteroid. From the point of view of the ship people, it becomes larger.</p>
<p>Think about time, which acts oppositely. Time actually slows down, but only for the people on say Earth. For people on the spaceship, it goes much faster.</p>
<p>anyone know the answers for Galieo and the prism one??????plz?</p>
<p>any other ones...that were particularly hard. How bout that tree photo one...I just guessed on that one...randomly</p>
<p>galileo was expanding universe and the prism one I would say it was prism and diffraction grating....only</p>
<p>also how bout that fractal one....the body of an insect right?</p>
<p>ya i think it was insect</p>
<p>what about that wave and the medium thing??
Also, the light through the hole and making the area on screen larger?</p>
<p>which one...I'm blanking</p>
<p>The tree photo wasn't too hard.</p>
<p>You have to find the magnification. You know that s<em>i = .1 m and that s</em>0 = 100m, so s<em>i/s</em>o = 1/1000. Then you multiply times the original object (height 25m.) to get 25/1000 = .025 m.</p>
<p>wave, medium, longitudinal wave, how it talks about there needs to be a seperate medium or somethin like that</p>
<p>Also, the diffraction and increasing the area on the screen???</p>