<p>@squiggly</p>
<p>All three would have changed in brightness yes</p>
<p>And was the other question asking for the greatest current? I remember the question being which bulb’s will be brightest when the switch was initially closed or something and i put the one on the bottom that wasn’t in parallel.</p>
<p>umm srsly feel like committing suicide here lol
i skipped ten and i’m already sure i got 2 wrong.
would that still somehow make an 800 if lucky?
can someone say yes? cuz otherwise i’m gonna cancel it.</p>
<p>Yes, you can easily get an 800 with that. It really is stupid that people cancel if they don’t get an 800. Honestly, anything 730+ is almost negligible to schools. If you honestly have standards that high, you are an idiot.</p>
<p>^ That can definitely still get an 800.</p>
<p>I disagree with the lightbulb one. I am posting my explanation in a picture.</p>
<p>so what is the right answer for the Gallileo question?</p>
<p>This is how I learned these circuits… These rules are right according to my physics text, and barron’s… Or is my reasoning wrong? </p>
<p>Part 1: [Imageshack</a> - picture1bjq.png](<a href=“ImageShack - Best place for all of your image hosting and image sharing needs”>ImageShack - Best place for all of your image hosting and image sharing needs)
Part 2: [Imageshack</a> - picture2lue.png](<a href=“ImageShack - Best place for all of your image hosting and image sharing needs”>ImageShack - Best place for all of your image hosting and image sharing needs)</p>
<p>Click on the photo, for a bigger size!</p>
<p>Feel free to bash my head in if I’m wrong!</p>
<p>The one with thte acceleration graph at the end, wasn’t the answer SPEED not VELOCITY, was increasing right, like C, or D was the answer right???</p>
<p>Yes increasing speed until a constant speed at t. This was the curved acceleration-time graph correct?</p>
<p>I took the test today and I’m pretty confident I got an 800. I’ll clarify a few problems (at least what I got):</p>
<p>Compiled list:</p>
<p>Light bulb: Bulb Z is the brightest (the one not in parallel)
Light bulbs X, Y, Z (all three) get affected
Galileo: Universe is expanding (Hubble discovered this)
Resistance: affected by temperature, length, cross section
Optics question: Only convex mirror virtual
Electrical charges +q and -q: only the leftmost and rightmost charges experience a net force to the right
Zero net force: The charge in the center: X
Relativity question: asteroid
Half life: none of the above (independent of temperature, etc.)
16 disintegration units
Light bulb: radiation
First 3 questions I actually got A for only 2 of them; net force up and acceleration downward for #1, #2 and #3 are net force down and acceleration downward, since g is always downward</p>
<p>Anyone disagree feel free to respond to this post and add to it. Thanks and good luck; hope we all get 800s.</p>
<p>How can the acceleration vector be pointing in the opposite direction of the net force vector…</p>
<p>Disagree with bulbs, see post above for my reasoning.</p>
<p>The first three were A since there is no force acting upward on the ball once it leaves the persons hand. There was only g acting downward throughout the toss. Fnet=ma, so all were negative. </p>
<p>Also does someone mind explaining to me the charges moving to the right?</p>
<p>Hi Runningpop:</p>
<p>I reasoned that on the way up, the velocity of the ball is decreasing due to the downward acceleration of g; however, the net direction of movement of the ball is upward, which should be the direction of the net force.</p>
<p>So for #1-3, would all of the answers be: Net force down, acceleration down? I stand corrected.</p>
<p>What was the answer to the question with heat being added to a system and the system doing work? I think i put -12 Joules</p>
<p>Cortana that was what I got too: -12 J</p>
<p>Sweet. And the second to last question about the direction of the current in the wire was “Could not befound” Right? Because you didn’t know if the magnetic field was directed into or out of the page?</p>
<p>That was what I put. Similar problems in my textbook either had X’s (going into the page) or points (going out of the page). That problem had nothing, so I put that it can’t be determined.</p>
<p>And did anyone get 10.75 cm for the distance from the adult to the child’s image?</p>
<p>ok i thought the brightest lightbulb were the ones in parallel because of least resistance.
The change in the Internal Energy was 12, but I think I got that wrong, it should be -12J right.</p>
