<p>I think it was I and II. More energy energy in the light (photons and electrons), but the work function doesn’t change unless the metal changes.</p>
<p>Force is NOT zero with a nonzero acceleration
Kinetic energy is not a vector
Two carts elastically collide, second one is 6 m/s
Inelastically collide and stick together for 1.5 m/s
Half life is 1 hr 20 min
A is proportional to b^2, straight line when it’s a vs b^2.
Constant acceleration graph is straight, displacement is a parabola.
Stars: Quasars
Resistors: 12 and 4 in parallel, 3 ohms in series.
Kinetic energy for half the speed was 9J.
Capacitator: nonlinear, negative decay (doesn’t reach zero, but gets close).
Pulley tension 2W
Photoelectric: I and II - energy increases in electrons and photons, but work function unchanged.</p>
<p>There was also a question about green light, but I don’t remember anything else.</p>
<p>Umm, for the A proportional to b^2 question, wouldn’t that mean:
A = kb^2, where k is a constant.</p>
<p>Then if we plot a vs b, we get a parabola.</p>
<p>If we plot a vs b^2, we get a linear graph (straight line extending from the origin), with slope k.</p>
<p>When we plot a vs. b^(0.5), it doesn’t do anything…</p>
<p>It’s because a vs b^2 means a goes on the y axis, and b^2 goes on the x axis.</p>
<p>@zzjaszz - agreed, thats what I put</p>
<p>two loops one with current other opposite current magnetic field to the left what choice was this? A or B?</p>
<p>I think the current was induced in the opposite direction and field faced right? just not sure what the question was again (forgot), but I remember just using RH rule and lenz’s law</p>
<p>what was the answer for the light and 6 screens
a. cannot see any light
b. which screen is white color or something like that</p>
<p>The current in the first one produced a field to the right, so the other one must have produced a field to the left.</p>
<p>Some more questions… not sure of the answers to some of these:</p>
<ul>
<li>Two wires w/ current in opposite directions, halfway between the magnetic field is in which direction? (perpendicular to page)</li>
<li>Two charges shot in a field w/ different velocities, what can you conclude? (they have the same sign)</li>
<li>Strength device: where is velocity greatest? (1 m on the way up)</li>
<li>Rocket w/ earth and moon: where is gravitational force strongest? where is net force zero?</li>
<li>Tuning fork: was it 7 cm?</li>
<li>Rutherford’s experiment: what was the important observation?</li>
</ul>
<p>strength device: is it 1 m up instead of 1 m down because energy is lost as sound?
rocket with earth and moon. greatest at a. least at the 9/10 mark.
rutherford: i put some deflected backwards? </p>
<p>for the a v b2 one, i still think it should be squareroot.
example: a is proportional to square of b so say a = x2 (x2=b); then if a = x (which would be sq root b), then its linear.</p>
<p>rocket with earth and moon C is net force = 0</p>
<p>But then you’re not getting the question. In your case, A is proportional to x^2, not b^2.</p>
<p>for the moon/earth rocket, i’m pretty sure it was D: because the distance to the earth was 9 times the distance to the moon, and 9^2 = 81.</p>
<p>Consolidated List (28/75)
Force is NOT zero with a nonzero acceleration
Kinetic energy is not a vector
Two carts elastically collide, second one is 6 m/s
Inelastically collide and stick together for 1.5 m/s
Half life is 1 hr 20 min
A is proportional to b^2, straight line when it’s a vs b^2.
Constant acceleration graph is straight, displacement is a parabola.
Stars: Black hole or quasar
Resistors: 12 and 4 in parallel, 3 ohms in series.
Kinetic energy for half the speed was 9J.
Capacitator: nonlinear, negative decay (doesn’t reach zero, but gets close).
Pulley tension 2W
Photoelectric: I and II - energy increases in electrons and photons, but work function unchanged.
amplitude and tension T1 = T2
Net force moon and earth –> C
Greatest magnitude moon and earth –> A
Negative linear for c= q/v
velocity less and frequency same for thick wire
light and 6 screens no light?
light and 6 screens white color?
3 second for ball to drop
refraction B reflection E
temperature goes to 20 celcius
1 m way up for the rider question
rutherford experiment some deflected
tuning fork 7 cm
same sign for two charges
current opposite magnetic field left</p>
<p>Here are some of my answers</p>
<p>Force vs distance graph = Potential Energy of spring
Centripetal motion with string breaking = To the left
Force points west between 2 charges = point equidistant from charges
Satellite orbiting earth = 2pi<em>4</em>10^7/(24<em>60</em>60)
2 charges between capacitor = both same sign
Current produces = magnetic charge perpendicular to page</p>
<p>Weird contraption with wheel = ?</p>
<p>does anybody have more questions that they remember? Im trying to make a consolidated list…</p>
<p>I put that you could see the white light at screens 1 and 2
and that you could see a bulb always no matter what
[noo idea if this is right though]</p>
<p>with the F = MA one</p>
<p>6x force and 3x mass, acceration was 2a</p>
<p>white light at screen 1 and 2 are you sure?</p>
<p>OH MY GOD. That test was harder than anything I had taken out of the PR book… if I get 750+, I will donate lavishly to charity, or do some other good deed as a return lol</p>
<p>@ kinetix64 do you remember any questions?</p>
<p>You can always see a bulb. However, I believe only one had white light (I presume that would be at screen one?)</p>
<p>Also, for the a is proportional to b2, which graph gives straight line…plot points.</p>
<p>At b = 1; x = 1
At b = 2; x = 4
At b = 3; x = 9</p>
<p>Thus, x = b^2 will give a straight line.</p>