<p>So what do you guys think of the test today? I thought it was hard.</p>
<p>Did anybody get 10^-3 for the earth’s angular velocity? And 0.8 for the spring scale with the 0.2 kg?</p>
<p>I bombed it…blanked halfway through because I was psychologically unbalanced after bombing Chemistry just before, so…</p>
<p>I dunno. =/</p>
<p>What about the sound question with pressure, energy and momentum? Is it all 3?</p>
<p>^yes it was. And I got 10^-3 for the earth one.</p>
<p>Or 10^-5. Haha I forgot</p>
<p>If you use dimensional analysis to solve it, the angular velocity of earth in rev/sec is 10^-5.</p>
<p>What about the quasar one, is it special relativity?</p>
<p>There was a quasar problem?</p>
<p>What was the one about the force exerted back? Was it just F?</p>
<p>And what had the greatest charge? 2Q+ 2Q- </p>
<p>The direction of the particle in the electric field was pointing northwest?</p>
<h1>75, the astronauts acceleration was 4g right?</h1>
<p>The thing that happens in light but not sound, Polarization?</p>
<p>What was the answer to the one about Doppler Effect?</p>
<p>In the beginning was one of the answers nuclear fusion?</p>
<p>The one with the two rods on the transverse waves. Which way were they moving. I said up and something else.</p>
<p>What about the Planck’s constant lambda = hc/E?</p>
<p>Which of the ray traces didn’t work? It was D right? where the beam goes at an angle and then straightens out.</p>
<p>In the beginning, did you get that twice all 3 were constant?</p>
<p>The KE at the bottom of the drop was 10,000 i think.</p>
<p>And the units for the question was Watts right?</p>
<p>The question about induction. The conservation of charge one was like something about integers i think.</p>
<p>Trying to think of others…</p>
<p>Man looks above water at bird, and sees it higher than it actually is.</p>
<p>Greatest power was the 3 ohm resistor in parallel.</p>
<p>The one about the orbitals is relating to momentum/velocity right?</p>
<p>What was the one about the force exerted back? Yes it was F</p>
<p>And what had the greatest charge? 2Q+ 2Q- , I got the one with Q+ and Q+</p>
<p>The direction of the particle in the electric field was pointing northwest? It was northeast</p>
<h1>75, the astronauts acceleration was 4g right? 3g</h1>
<p>The thing that happens in light but not sound, Polarization? Yes</p>
<p>What was the answer to the one about Doppler Effect? Wavelength shorten is what I got</p>
<p>In the beginning was one of the answers nuclear fusion? Hopefully</p>
<p>The one with the two rods on the transverse waves. Which way were they moving. I said up and something else. I said Up and Down</p>
<p>What about the Planck’s constant lambda = hc/E? Skipped this one</p>
<p>Which of the ray traces didn’t work? It was D right? where the beam goes at an angle and then straightens out. I got E</p>
<p>In the beginning, did you get that twice all 3 were constant? No way, only the first</p>
<p>The KE at the bottom of the drop was 10,000 i think. It was 1000</p>
<p>And the units for the question was Watts right? Damn I thought that W was for work, argh.</p>
<p>The question about induction. The conservation of charge one was like something about integers i think. Yes I got that</p>
<p>Trying to think of others…</p>
<p>Man looks above water at bird, and sees it higher than it actually is.</p>
<p>Greatest power was the 3 ohm resistor in parallel. Got that one wrong</p>
<p>The one about the orbitals is relating to momentum/velocity right?</p>
<p>Uhh can anyone confirm these answers? Looks like we disagree on quite a few. If there are two positive charges, then there is no electric field in the middle, so I still think it’s 2Q+ and 2Q-</p>
<p>What did you guys get for the two problems that asked about spectra of a filament and a neon gas? I got continuous spectrum for the first, can’t remember what I got for neon gas.</p>
<p>And I got only I (higher than it actually is) for the man/bird problem. Got the power one wrong too :/</p>
<p>EDIT: Yeah, I got the same answers as Caveboy did for the two charge problems.</p>
<p>Greatest charge = greatest force?, if so, you are correct. I forgot everything about E&M since I am in AP Physics C where we do mechanics sem. 1 and e&m sem. 2</p>
<p>There is electric field between 2q and -2q since the positive one repels and negative one attracts. Generally We use positive charge for electric field</p>
<p>Yes I learned that last year, I forgot that which had the greatest charge meant which gave greatest electric field</p>
<p>I second guessed myself, I had your answers but I changed both of them</p>
<p>What was the one about the force exerted back? Yes it was F</p>
<p>And what had the greatest charge? 2Q+ 2Q- , I got 2Q+ 2Q- as well (kQq/r^2)</p>
<p>The direction of the particle in the electric field was pointing northwest? I got northeast</p>
<h1>75, the astronauts acceleration was 4g right? i got 4g</h1>
<p>The thing that happens in light but not sound, Polarization? i got that as well.</p>
<p>What was the answer to the one about Doppler Effect? The wavelength shortened</p>
<p>In the beginning was one of the answers nuclear fusion? i got that</p>
<p>The one with the two rods on the transverse waves. Which way were they moving. I said up and something else. I got Up and Down</p>
<p>What about the Planck’s constant lambda = hc/E? I got that</p>
<p>Which of the ray traces didn’t work? It was D right? where the beam goes at an angle and then straightens out. Cant remember, I think I got that</p>
<p>In the beginning, did you get that twice all 3 were constant? Cant remember</p>
<p>The KE at the bottom of the drop was 10,000 i think. I believe it was 1000</p>
<p>And the units for the question was Watts right? Ya I got Watts.</p>
<p>The question about induction. The conservation of charge one was like something about integers i think. Cant remember, I think I got that wrong</p>
<p>Man looks above water at bird, and sees it higher than it actually is. I got that</p>
<p>Greatest power was the 3 ohm resistor in parallel. I got the 12ohm resistor (P=(I^2)R)</p>
<p>The one about the orbitals is relating to momentum/velocity right? Cant remember</p>
<p>kQq/r^2 - yea i used it but forgot direction changed the sign of the force</p>
<p>Greatest power was the 3 ohm resistor in parallel. I got the 12ohm resistor (P=(I^2)R)
ok good i got that</p>
<p>Im pretty sure astronaut one was 4g. Since he is feeling 4Mg pushing up, Net force on him is 4Mg-Mg=Ma so 3Mg=Ma and a=3g</p>