<p>Wingsreborn, </p>
<p>You only see reflected or transmitted light…so your answer is wrong. It has to be that it absorbs everything but red. </p>
<p>Ishanz: Dopler effect is only caused by the motion (velocity) of the source or the receiver</p>
<p>emf induced when the bar magnet is moved? only not induced when velocity of magnet = velocity of coil?</p>
<p>Whats was the answer to the piano question?</p>
<p>wavelength decrease and period decrease?</p>
<p>Can someone confirm the list that I have compiled?</p>
<p>^^yes, wavelength, period both decrease</p>
<p>Undisputed answers so far:</p>
<p>antimatter question: positron
water is boiling: upper most straight part
Index of refraction: sin 60 / 1.5
Given initial velocity, mass, and stopping time: 1, 2, and 3
Force x time = change in momentum
What led to the nuclear model: gold foil experiment
Skydiver jumping off of a plane: potential energy > kinetic energy
Throw ball a up and ball b down at same initial velocity. Whats the velocity of ball a: v (same as ball b)
Skydiver jumping off of a plane: potential energy > kinetic energy
Half covered lense: full object, but decreased intensity
Index of refraction is 4/3: wavelength is 3/4
Which waves will result in the least disturbance: 6 + (1/2)wavelength
Man is standing underneath water: only choice 1 (the bird and the tree appear to be higher than they actually are)
Particle question where you know the rotational speed of the giant ball with a slit in it: you can only find the speed of the particles
Students climbing stairs - heaviest one
Pv = nrt : t increases as q increases
Heaviest: neutron
Concave mirror: virtual image
Convex lense: real image both small and big
acceleration due to gravity: 1/9
Theta and initial velocity one: Just increase the initial velocity
Worker kicks the bucket: 2 m
Must be electrical field: point charge
Must be magnetic field: bar magnet
Ammeter question (based on drawing from ImageShack® - Online Photo and Video Hosting
Highest: 1 and 2
Lowest: 4 and 5
Vector direction for electric field: West
Vector direction for negative point charge: East
Mass of object in pulley problem: 1.2 Kg
Projectile: net force is constant, direction of net force is constant, angle of net force with path is changing
Object rotating around planet: net force is constant, direction of net force is changing, angle of net force with path is constant (always perpendicular to path)
Speed of light question: 10^-13 J
Traffic light question: All colors except red are absorbed
Piano question: wavelength and period both decrease
emf question with coil and battery: current is induced in all cases except when the coil and magnet have the same velocity
Firetruck question: Velocity of truck + velocity of sound in air</p>
<p>Disputed questions:</p>
<p>None</p>
<p>answer to vertical displacement question? with graph…</p>
<p>vertical spring and water chamber?</p>
<p>ball moves with velocity of 4 m/s?</p>
<p>Inelastic collision is when they stick together and become one blob?</p>
<p>Decrease length of pendulum to decrease period?</p>
<p>Revolution 2010: "You only see reflected or transmitted light…so your answer is wrong. It has to be that it absorbs everything but red. "</p>
<p>I know, I said it reflects red light. You would see that, wouldn’t you?</p>
<p>Dude but that would mean that the red light would be reflected from within…from the lightbulb. So that doesn’t work. My answer implies that only red light is transmitted.</p>
<p>Wait, was one the cover and one the light? If so, you’re right.</p>
<p>yeah. Can you confirm my list and the rest of the answers? Did you put 1.2 kg for the mass?</p>
<p>What do you think the curve will be?</p>
<p>Vector direction for electric field: West
Vector direction for negative point charge: East</p>
<p>I remember vaguely what this question asked, but I put south then east. For the first one, why would the charges not cancel out and result in the answer being south?</p>
<p>Also, what was the answer to the questions regarded the conservation of momentum? It had a hockey puck (or something like that) with a mass of I think .2 kg moving at 8 meters per second that hit another puck that has a mass of 1 kg moving at 2 meters per second. After the collision, the small puck rebounded with a speed of I think 2 meters per second. I didn’t want to waste valuable time (was rechecking my omitted answers after finishing all others) so I didn’t calculate it out, but I think I put that the large object would be moving at 3.2 meters per second? (because its speed wouldn’t decrease or stay constant, and 3.2 sounded like the only answer that wasn’t outrageous.)</p>
<p>The answer was 4 m/s if I remember correctly, because the little “puck” rebounded and had negative p after the collision…</p>
<p>Something little that I’d like to point out: on the actual test, the answer to the ammeter question was 1&5 and 3&4.</p>
<p>dakilica: That answer is confirmed: 4m/s off of the collision. </p>
<p>Another one: The elevator with the 20 N object: I said it was 24 N, but it was more of a test-strategy guess than any actual physics. I was in a panic mode by this point and nothing would come to mind >.> Can anyone confirm?</p>
<p>Undisputed answers so far:</p>
<p>antimatter question: positron
water is boiling: upper most straight part
Index of refraction: sin 60 / 1.5
Given initial velocity, mass, and stopping time: 1, 2, and 3
Force x time = change in momentum
What led to the nuclear model: gold foil experiment
Skydiver jumping off of a plane: potential energy > kinetic energy
Throw ball a up and ball b down at same initial velocity. Whats the velocity of ball a: v (same as ball b)
Skydiver jumping off of a plane: potential energy > kinetic energy
Half covered lense: full object, but decreased intensity
Index of refraction is 4/3: wavelength is 3/4
Which waves will result in the least disturbance: 6 + (1/2)wavelength
Man is standing underneath water: only choice 1 (the bird and the tree appear to be higher than they actually are)
Particle question where you know the rotational speed of the giant ball with a slit in it: you can only find the speed of the particles
Students climbing stairs - heaviest one
Pv = nrt : t increases as q increases
Heaviest: neutron
Concave mirror: virtual image
Convex lense: real image both small and big
acceleration due to gravity: 1/9
Theta and initial velocity one: Just increase the initial velocity
Worker kicks the bucket: 2 m
Must be electrical field: point charge
Must be magnetic field: bar magnet
Ammeter question (based on drawing from ImageShack® - Online Photo and Video Hosting
Highest: 1 and 2 (Actual answer 1 and 5)
Lowest: 4 and 5 (Actual answer 3 and 4)
Vector direction for electric field: West
Vector direction for negative point charge: East
Mass of object in pulley problem: 1.2 Kg
Projectile: net force is constant, direction of net force is constant, angle of net force with path is changing
Object rotating around planet: net force is constant, direction of net force is changing, angle of net force with path is constant (always perpendicular to path)
Speed of light question: 10^-13 J
Velocity of puck after collision: 4 m/s
Elevator: 24 N</p>
<p>Disputed questions:</p>
<p>None</p>
<p>Was the wavelength one 3/4?</p>
<p>Was the answer 1.2 kg for the pulley question?</p>