**Official June 2013 SAT II Physics Thread**

<p>i put resonance for fundamental frequency</p>

<p>Yeah that’s what I put.</p>

<p>@the time dilates for the people who are not moving at the speed of light
[Time</a> Dilation](<a href=“http://www.phy.olemiss.edu/HEP/QuarkNet/time.html]Time”>Time Dilation)
“The astronaut leaves on a deep space trip traveling at 95% the speed of light. Upon returning the astronauts clock has measured ten years, so yhe astronaut has aged 10 years. However, when the astronaut reunites with his earth bound twin, the astronauthe sees that the twin has aged 32 years!”</p>

<p>i put resonance also, and quality for piano vs guitar</p>

<p>@flawless, basically, it MUST be a fraction greater than one. you just mixed it up i think
o.O</p>

<p>What was the resonance/fundamental frequency problem?</p>

<p>If the dilated time is T, then the time on earth should be less, meaning you have to multiply the dilated time by a fraction that is less than one to get a value that is less than T.</p>

<p>it was one of the first questions, the type where you have a list of items from a-e or whatever and u put those items for the next few questions. the question was basically like “whats related to fundamental frequency” or w/e and the answer was resoancne.</p>

<p>I’m pretty sure the value should be greater than T. Isn’t the time on Earth always greater?</p>

<p>@flawless T is not the dilated time… time dilates on earth, not at the speed of light</p>

<p>edit: ya fireonice i agree</p>

<p>@flawless just read the link i posted,
“The astronaut leaves on a deep space trip traveling at 95% the speed of light. Upon returning the astronauts clock has measured ten years, so yhe astronaut has aged 10 years. However, when the astronaut reunites with his earth bound twin, the astronauthe sees that the twin has aged 32 years!”</p>

<p>Correct me if I’m wrong, but if time slows down when you go at a speed of light, then wouldn’t it take a longer amount of time for an event to occur, implying that the value of T is greater for that event in comparison to that on earth? I’m not sure, but that’s my understanding of it.</p>

<p>@swagmaster I put resonance, but in retrospect I’m not a 100% sure that’s the answer because everything oscillating object has a fundamental frequency regardless of whether or not it’s experiencing resonance. Someone mentioned pitch before, and pitch is essentially frequency, but not necessarily the fundamental frequency…not sure though.</p>

<p>@flawless, the slowing down of time doesn’t occur to the people going at the speed of light… it occurs to other people. Anyways, if something is “dilating”, or slowing down, then something must be speeding up relative to what is “slowing down”, so it could be called “time contraction” and it would still make sense. once again, TIME DOES NOT DILATE FOR THE PEOPLE WHO ARE TRAVELING AT THE SPEED OF LIGHT, IT DILATES FOR THE OTHER PEOPLE</p>

<p>Thanks for clearing things up</p>

<p>@flawless, i’m pretty sure it’s resonance: [Fundamental</a> and Harmonic Resonances](<a href=“http://hyperphysics.phy-astr.gsu.edu/hbase/waves/funhar.html]Fundamental”>Fundamental and Harmonic Resonances)</p>

<p>anyways , i dont mean to sound rude if i did</p>

<p>Also, what did you guys put for the capacitor one?</p>

<p>No, I appreciate the help. Unlike other tests, I don’t have a problem with getting questions wrong on this test because the curve is good.</p>

<p>i guessed on the capacitor one and put 20*10^-6</p>

<p>That’s what I put</p>