<p>Lol I put polarization for the sunglasses, because I remembered that the sunglasses i bought last week said “polarized” on the lenses</p>
<p>would 66 right, 6 wrong be an 800 on this test? </p>
<p>What answer did you get for the measurement question? It was something like 78.0 or 78.02</p>
<p>78.0</p>
<p>I put southeast. What did you get for the leaf electroscope question? The answer choices were it was positively charged, it was negativly charged, it was a conductor, it was an insulator,…</p>
<p>I got southwest, and positive charge (not 100% sure). What about the supernova one?</p>
<p>My ds took it this morning and felt good about how it went. He said southwest, positive charge, and the supernova = exploded old star (he can’t remember exact wording.)</p>
<p>Great. I agree with all of those answers. I also got 0<t<2 for the special relativity one.</p>
<p>How was the measurement problem 78.0? I got 78.02, because it obviously looked over the line?</p>
<p>scientific notation. the thermometer was only in increments of 0.5</p>
<p>what did you guys put for that vertical plane mirror question?</p>
<p>I put the same size as the object.</p>
<p>What did you guys get for the relativity one? I put down that it would be longer than 2 sec…</p>
<p>I put down longer than 2 seconds. what did you put for the compass problem? i put the compass where the line was straight across (left to right)</p>
<p>I had 0<t<2 for the relativity due to time dilation (time seems slower for the person that is moving faster), and straight across for the compass one (the compass needle is attracted to the magnetic field created by the current running through the wire).</p>
<p>for the compass, What was the direction of the current? was it going into the page (i forgot) and was the compass to the right of it?</p>
<p>for the relativity one, the question asked to find how much time the stationary observer measured. it’s less time for the person on the ship and more time for the observer ( i tink ) so it’d have to be more than 2 seconds or minutes (whatever the units were)
mines only a guess idk for sure</p>
<p>I remember that the current was going into the page so the magnetic field is going to clockwise. I put the compass tilted slightly from right to left but I’m not sure if that was correct </p>
<p>^I think i screwed up that magnetic field thing… I accidentally found the direction of the electric force and put the compass in that direction ://</p>
<p>for the relativistic time problem, i accidentally had faulty logic and put 0-2 seconds… it should have been 2+ seconds… time passes slower when you are traveling at speeds nearing the speed of light, so the observers on the platform would have counted more than 2 seconds because time passes faster for them.</p>
<p>why is the needle of the compass going from left to right? doesnt it align itself with the magnetic field?</p>
<p>NOOO. I put down 0-2 seconds on the time problem. My process of elimination brought it down to that and the 2+ seconds. My 50/50 skills failed :(( </p>
<p>I think the answer would be 0<t<2 because if time is slower for the people moving at the speed of light, then it would be faster from the observer’s point of view. Also, thinking about it intuitionally, if you see a spaceship traveling near the speed of light fly by you, you would see it for a brief period between 0-2 seconds, much faster than the people on the spaceship are moving in their frame of reference</p>