<p>Can someone confirm the undisputed answers?</p>
<p>For the football question though, horizontal speed is the cosine of theta, meaning if you decrease theta, it’s horizontal speed will increase, and if you increase it even more by increasing starting horizontal speed (Vo), then you would get the farthest result.</p>
<p>Source: father was a professional soccer player :D</p>
<p>What would you say about 5-6 wrong and a couple ommited would be?</p>
<p>More answers: for the last question</p>
<p>given m, vo, and t</p>
<p>you can get acceleration, force, and power, right?
all of the above?</p>
<p>Strength of magnetic force depends on length of wire, current, and distance from other wire? all of the above?</p>
<p>yes and yes. for the question before the convex lens one, was the mirror concave or convex? i thought it was a picture of a concave mirror…</p>
<p>5 or 6 wrong and a couple omitted is an 800.</p>
<p>Also, JUST increasing V would DEFINITELY make it go further, and the question asked which will definitely do it. There can’t be two wright answer, and if theta is, say, 10 degrees, decreasing it won’t make it go further.</p>
<p>Dakilica, </p>
<p>Yeah, but the vertical component matters too!
If you decrease sin theta, then the ball will hit the ground sooner</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
Car applies the breaks. You know m, vo, and t: All of the above (acceleration, force, and power)
Strength of magnetic force on wire depends on: all of the above (current, length, and distance)</p>
<p>Disputed questions:</p>
<p>None</p>
<p>projectile: net force is constant, direction of net force is constant, angle of net force with path is changing (?)</p>
<p>also what is it for the object rotating in orbit?</p>
<p>ok… if it’s a concave mirror, it can also produce real images. 100% sure. what i’m not sure is if it was a concave mirror. anyone?</p>
<p>what was the answer to the piano one?</p>
<p>Lower then higher frequency wave…</p>
<p>so do wavelength decrease and period decrease?</p>
<p>It was a convex mirror sorry… only virtual images</p>
<p>What was the answer to the firetruck question ? Concerning the Doppler effect?</p>
<p>blankusername, </p>
<p>I agree with you. </p>
<p>Object rotation in orbit:</p>
<p>net force is constant. direction of net force is changing. angle of net force with path is constant</p>
<p>Object in orbit undergoes uniform circular motion: net force is constant, direction of net force is changing, angle of net force with path is constant (always perpendicular to path)</p>
<p>the convex lens one, it made real images only right (I and II)?</p>
<p>firetruck question:</p>
<p>velocity of firetruck plus velocity of sound…</p>
<p>Whats was the answer to the traffic light question?</p>
<p>Lense absorbs everything but red light?</p>
<p>speed of light question: 10^-13 J?</p>
<p>Either absorbs everything but red, or reflects red. I chose reflects red because I doubt it could absorb EVERYTHING except red, but that it reflects everything in the nm range called “red” is quite probable.</p>
<p>I thought the firetruck question had to do with the wavelength and not the velocity. Doppler Effect.</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</p>
<p>Disputed questions:</p>
<p>None</p>