<p>The astronaut’s weight is doubled because Weight = GmM/r^2. r is not changing but m is doubled</p>
<p>Hm, I think you’re right.</p>
<p>What I was thinking was…</p>
<p>v=sqroot(Ft/u)</p>
<p>where Ft= tension and u= m/L</p>
<p>v=lamdaf</p>
<p>idk if that works…</p>
<p>^what’s the astronaut’s problem again?</p>
<p>Quakerrs, that is the formula for frequency of a simple harmonic oscillator, not a string. but don’t worry, I wasn’t thinking for that one and I got it wrong too… isn’t it great when you know something yet still do it wrong?</p>
<p>the astronaut is on a planet that has twice the math of the earth, but the same diameter (radius is the same) what is the astonaut’s WEIGHT not mass.</p>
<p>what other waves problems were on the test?</p>
<p>Yeah, I just realized…oh well! This test was an interesting one…I took kaplan tests yesterday at my local B&N and i got 780 on the first one and then 800…</p>
<p>I HATE it when I’m using the wrong equations…I somehow remebered the one for capcitance that involved area and distance though :)</p>
<p>There was the one where the two waves met at point P and were in phase?</p>
<p>how about the one a spaceship travels to earth at 2*10^8 m/s, what’s the speed the observers see from the earth?</p>
<p>anybody know when scores come out? I’m dying to know already… and the test was just a few hours ago -_-</p>
<p>That was relativity…and i omitted :)</p>
<p>^Quakerrs
I said its amplitude is larger than any other points on L, but i think i got it wrong</p>
<p>Ah for the two meeting at point p i believe it was any point along l, because that would be the central bright fringe… I can’t remember the rest of the question. but that is what I put. I wouldn’t count on me thought… the only one i left blank was the rocket one! but I think it was 2.5e8… because that was the only answer that made sense.</p>
<p>do you guys remember one problem like asking you why can’t observe a speed faster than light? Was the answer choice the relativity?</p>
<p>i put 3*10^8 cuz i just guessed…
what’s rocket one about?</p>
<p>how about the one said that a planet is 3 billion light yrs away from earth, what can we conclude?</p>
<p>it was the one you mentioned, if we shoot a dart a 1e8m/s off a rocket going 2e8m/s, how fast does the dart go? (dart/rocket meaning I don’t remember the terminology of the actual question)</p>
<p>yeah, it was relativity for the speed faster than light, and I’m pretty sure the amplitude is larger on the point than the line because the wavelengths are in phase and they are off by 1 m, which is a multiple of the 0.5 wavelength</p>
<p>The answer is 3.0 x 10^8. Nothing can travel faster than the speed of light. Not even really fast light.</p>
<p>you can conclude that quasar (or whatever it was called?? I had no idea and was going ***) emits very little light.</p>