<p>^I remember the 160N question, well i remember it being an answer lol</p>
<p>its just that fundamental frequency and resonance are really closely releated</p>
<p>if the pitch is at the same natural frequency, something that didn’t make a sound before will start making a sound –> resonance</p>
<p>Dont remember if this question was on the SAT or on one of my preparation tests, but it was about a circuit of unknown emf, and two resistors. one of 40 ohm and the other of 20 ohm. It asked about the amount of heat release by the 20 ohm resistor, which i think it was the half of the heat released by the 40 ohm resistor. (h/2) can anyone confirm this?</p>
<p>^I also put that as an answer</p>
<p>I remember the 160N question, well i remember it being an answer lol
^Do you remember 2 of them, back to back?</p>
<p>@jimei1337 YESS! i remember it was a set of 2 questions. the firs one asked about a body of 100kg what would happen to its mass if it were taken to the moon. answer: no change.
the other was about a body weighing 1000 N on the earth, which in turn would wheigh 160N on the surface of the moon. so the answer is right 160 N for the moon question.</p>
<p>I agree with all of the answers in the compiled list. What was the answer to the one about the loop in the field. It was a I,II,III. It asked about changing the current or something. One part had to do with area, the next resistance, and finall changing the rate change of the field. What did you guys put?</p>
<p>
</p>
<p>That was on the test, and that’s what I put.</p>
<p>does anyone remember which letter choice the ‘potential energy of charge’ was??
was there not also a choice having to do with potential DIFFERENCE? i thougt THAT was the answer…</p>
<p>@jimmei:</p>
<p>Yeah i remember those two questions. The second one was 160N; the first one was not. It was 100 kg. It asked for the mass (Which does not change in dif planets. The second one was weight, which does change)</p>
<p>
I think I put all 3.</p>
<p>I second the h/2 for the circuit problem. My reasoning was that it had half as much voltage going across it, so it would generate half as much heat.</p>
<p>What about the questions where it showed a charge and a cirle. one went straight in, the next went around then in, the third just went around. I remember putting no work for the last one, and potential greatest for the first one.</p>
<p>@ MCS735
thats what i put too</p>
<p>Compiled Answers
-Universe expansion: red shift + something else, I & II
-Oil drop: calculate electron charge
-Ice cube -50 C to 150 C:
… _<em>/
… /
.</em>/
/
-Initial velocity 30 m/s, v and a at apex: 0 m/s, -10 m/s^2
-Initial velocity 30 m/s, v and a final: 30 m/s, -10 m/s^2
-X and Y collision: need to know masses (was this the same as ratio of the masses?)
-Insulator/conductor: glass and aluminum
-Starting a fire: converging lens
-Cop car moving: fA < f0, fB > f0
-People moving: fA > f0, fB < f0
-Heavy ball versus lighter ball: I put ratio of V to SA was smaller in the larger ball
-Lightest particle: electron (I just googled this)
-Magnification of diameter of coin: 6 (choice A)
-Buzzing noise: ???
-Ball going east, force applied to it: went east, curved, and carried on this way diagonally southwest
-Why doesn’t moon crash into earth: Constant gravitational pull, but the velocity keeps it from crashing
-Electroscope, what was the rod’s charge: negative
-Which one didn’t have a 1/r^2 graph: potential energy of charge
-Maximize magnetic force: I, II, and III (velocity of particle, charge of particle and magnitude of magnetic field)
-Moon and earth gravity, change in mass: no change (arghhhh I got tricked T.T)
-Moon and earth gravity, change in force: 160 N
-20 ohm and 40 ohm resistor: h/2</p>
<p>Yeah that is correct. It only depends on the final position and not the path taken.</p>
<p>For the question about adding the two samples of water 100 grams at 60 and 50 grams at 30 did you guys put 50 C as the answer?</p>
<p>i had trouble with the question that had a p-v graph for a gas
it was a I II III question
i dont remember the specifics, something like constant temperature for 1 and 3, no heat exchange for 2 and 4…
does anyone else remember?</p>
<p>I got 50 degrees for that question as well.</p>
<p>^i agree 50 degs</p>