<p>^no it asked about the relationship between frequency and energy of photon, not energy of emitted electron</p>
<p>yep the work function is only with the photo-electric affect when emiting electrons</p>
<p>Oh, damnit.</p>
<p>What did you guys get for the girl got the electric shock inside the car question?</p>
<p>“II only” for the one with large and small boxes with temperature transfer</p>
<p>I agree with chocie II
but isn’t choice II the asnwer as well?
so chocie II and III?
cuz heat in = heat out
m1c1 delta T1 = m2c2 delta T2</p>
<p>and c1 and c2 r the same in that case.</p>
<p>and chocie III was like heat transfer would occur because of the difference in mass, even tho there’s no temp diff.
it asked for whether or not the “heat transfer” would occr. and a change in heat doesn’t necesarrily mean a change in temperature. did anyone else put both chocie II and III?</p>
<p>@gohackers, I also put choice II and III</p>
<p>I’m pretty sure a change in heat would mean a change in temperature, unless a phase change occured.</p>
<p>If two objects are at the same temperature they are in thermal equilibrium. 0th law of thermodynamics
If two objects are in thermal equilibrium no heat if flowing between them, the definition of thermal equilibrium.</p>
<p>Wait are we talking about the problem with the two masses that were 5kg and 2kg (i think) and each one (I, II, III) had diff. arrows with the heat transfer like 15 to 10, etc.</p>
<p>I’m Back guys.</p>
<hr>
<h2>Consolidated List ~44/75 Questions (More than half the test)</h2>
<p>v/2L is fundamental frequency for string fastened at two ends
Resonance was an answer
For the graph given about a wave:
–period = 0.01s
–amplitude = 4
–wavelength = 6
For the graph given about potential energy versus distance:
–potential energy at x1 = a
–kinetic energy at x1 = b
75) B0 isnt necessary for emf (Confirmed)
beta particle emission question: nuclear mass stays the same
radioactive decay with half lives after 90 days = 8
Telephone messages —> visual images on screen = fiber optic cables (Confirmed)
students record distance travelled: 10.77 is average velocity / 13.4 m in fifth second (<em>split)
two magnets are next to eachother:
–1st question: either one or both are permanent.
–2nd question: both are permanent (</em><em>split)
Q = cv = 20x10^6
for 73) current is same (E) I1 = I2 = I3 (current stays same in series circuit)
for 74) use resistance eqn. R = PL/A answer was r3(thinnest)>r1(medium)>r2(fattest)
for the beginning like numbers 6-8 given graphs:
–relationship between mass and energy = E = mc^2 = straight line (B)
–relationship between freq. and energy = E=hf = straight line (B)
–intensity of monochromatic blue light (D which is straight line with positive x intercept) (Confirmed)
optics question with converging lens: same size upside down
for 72) f/cos thetha
71) F = 40 N
First few questions:
–1) momentum of II is greater
–2) momentum is same
–3) momentum is same
optics question with plane mirror at an angle: image is virtual and not inverted
Least affects static shock when getting out of car: whether the engine is on (Confirmed)
Pulley with 2 masses of 50 N each and in equilibrium: Force on the rope is 50 N
The efficiency one being 40% (500K and 300K)
B for the field line diagrams w/ two opposite charges
80m for dropping something off a cliff
“II only” for the one with large and small boxes with temperature transfer
For the 5 diagrams as choices with a satellite orbitting a planet. Mass and Radius varied.
–First problem, asked which had greates grav. force = answer E (m=2M r=R)
–Second problem = E (m=2M r=R)
Linear Expansion problem:Temp raised from 20 to 22 over to 20 to 30. deltaT raised 5x, so L raised 5x, and the answer = 0.015 cm
Rutherford Experiment problem: The size of nucleus was significantly smaller than that of the atom
Elevator problem: I only
Which of these could make the net force 0: I and II only (I got “vector sum=0, and that some could be in the same direction”, but not that they could be the same magnitude)
Work is the only nonvector quantity
Wave generator (deep –> shallow): The eqn that relates it is s1/lam1 = s2/lam2 because freq doesnt change : Answer = velocity of the waves changes (can’t remember values but used that equation to get ans = 3.2)
Which waves can interfere(sound somethign somthing) Answer: I, II, and III
Negatively charged rod and X and Y are ends of a piece of metal: Answer: voltage / net force = 0 (</em>*split)
Area under F vs t curve = impulse</p>
<p>For the magnet question that you put said split, I also put both are magnets. Also what did the question with charged rod X and Y ask for?</p>
<p>Willgo put up a legitimate argument. Check back a few pages. But I do agree with you.</p>
<p>A question to all of you: What are your scores according to just the ~50 questions on the Consolidated List? Include the (**split) according to what you sincerely think. </p>
<p>I’m at -5 on the list. And I left 2 blank. Still hoping for that 800. =]</p>
<p>yeah does anyone remember what the charged one rod was… i had some q’s on that</p>
<p>at 5 wrong, and skipped either 1 or 2… forget now
what physics courses did u guys take before the test? just curious</p>
<p>what was resonance an answer for?
For that group of questions, I forget what the first question asked, and the second I put quality(timbre).</p>
<p>From what I can remember, the charged rod was like, you have this X Y thing with no charge with an insulated bottom, and you bring a negatively charged rod near to the X side, and they ask what’s true?
(A) The X side has a net negative charge.
(B) The Y side has a net positive charge. ( ? )
(C) Something.
(D) Something.
(E) X and Y have electric potential of 0. ( ? )</p>
<p>Yeaah, really sketchy on the answer choices, haha, sorry.</p>
<p>@ Sounditout ; The first question asked something along the lines of, ‘What’s determined by the fundamental frequency?’ and that was pitch? And the second question asked about what characteristic allowed for the audible difference between a note on the piano and a note on the guitar.</p>
<p>c and d were like x and y have equal net positve charge
and x and y have equal net negative charges</p>
<p>why is the answer E?</p>
<p>For the X and Y magnet one I think I put the electric potential was zero. I got that from process of elimination because the other ones didn’t work.</p>
<p>ah right. pitch was the answer to the first, and i’m pretty sure that quality(timbre) is the answer to the second.</p>
<p>and right now i’m at -6. I only took honors physics because my school doesn’t offer AP, but I took the AP B in may. </p>
<p>I thought this test was considerably more difficult than practice tests that I had taken.</p>
<p>I agree, this test was definitely harder than the practice tests that I took.</p>