<p>bump guys...</p>
<p>like 2 people took this test compared to the 283729873287 that took math...</p>
<p>Timbre - that's what I put for the guitar-piano one. Wikipedia says it's the right answer (its definition is almost word for word what was on the test: "the quality of a musical note or sound that distinguishes different types of sound production, such as voices or musical instruments" </p>
<p>Shubham, why was the ruler one harmonic motion? </p>
<p>I put fiber optics for the one about telephone messages sent by light - although honestly, I had no clue and only put it because it had the word "optics" in it. Again, Wikipedia's fiber optics page seems to indicate it's the right answer (there's a whole section on the application of fiber optics in telecommunication).</p>
<p>The ruler one is harmonic motion because I imagine it resembles a weird pendulum/spring system; there is a harmonic force that depends on how far the ruler is pulled, and it is probably equivalent to harmonic motion at small angles.</p>
<p>Yeah the ruler one is harmonic motion because the period of the ruler's back and forth oscillations is consistent with pendulum motion I believe.</p>
<p>I would still like to know the final verdict on the fundamental frequency one, as well as the one where you have the force/kinetic energy of the orbiting satellites (I got the same answer for both).</p>
<p>^^Answer was E for both I think</p>
<p>That's what I got.</p>
<p>What about the one having to do with perfect magnets, I had no clue.</p>
<p>That's what I got too. It was really obvious; I just get nervous when the questions are so similar.</p>
<p>Which one was that again?</p>
<p>there were 2 bars, one with sides 1 and 2 the other with sides 3 and 4</p>
<p>2 is attracted to 3, What can you assume about the magnets?</p>
<p>1 is attracted to 4 and 2 is attracted to 3, what can you assume about the magnets?</p>
<p>I had that one or both is a magnet for both answers.</p>
<p>I was a little unsure about the second one, but since it said nothing about repulsion I don't see how you could assume that they're both magnets.</p>
<p>
[quote=Baelor, Mike41691, tennischick035]
the one where you have the force/kinetic energy of the orbiting satellites (I got the same answer for both).</p>
<p>That's what I got.</p>
<p>^^Answer was E for both I think
[/quote]
</p>
<p>The answer was not the same for both. you cannot have maximum kinetic and potential energy at the same time. one must be compromised (i picked e for both too but I realized that's wrong). in this case, potential energy should've been one with a very big radius and a small mass. that's why potential energy has the negative sign in front of it.</p>
<p>But you can have max kinetic and max grav at the same time right?</p>
<p>yeah you can. the answer was E both times.
maximum gravitational force, maximum kinetic energy</p>
<p>Cool, I wasn't sure because it didn't say whether you could use answer choices more than once</p>
<p>i don't remember the problem. did it say max. grav or max. potential energy. </p>
<p>i thought it said max. potential energy though . . . .</p>
<p>nevertheless, i also put e for both</p>
<p>nah it said maximum gravitational force</p>
<p>phew. thanx for the clarification. it's +1 for me! YAY!</p>
<p>What was the answer to the one about 10N force exerting for 3 meters)?</p>