Physics - May 2007

Dispersion results when the _________ of light in a material, and hence the refractive index of that material, varies with the _________ of light.

2007-05-17 15:29:12 · 3 answers · asked by Anonymous

My friends are retarded and think that things moving sideways will take longer to hit the ground than an object in horizontal equilibrium.

So, if a bullet is shot from a gun 100% horizontally, and a bullet is dropped at the same height and time, will they both hit the ground at the same time?

2007-05-17 15:18:45 · 5 answers · asked by Anonymous

and they fly off with the velocities v1 and v2, as shown in the drawing. what are the magnitudes of v1 and v2?

pic:
http://img502.imageshack.us/img502/821/untitledzl7.png

2007-05-17 15:05:12 · 2 answers · asked by Aaron R 1

and blue under blue light, what color is the cloth? why cant it be any other color?

2. A person tells you that 2 organisms belong tp the same family but to different classes. Can that information be right?

2007-05-17 13:45:43 · 5 answers · asked by Anonymous

The speed is then held constant for 20s , after which there is an acceleration of -3m per second squared until the automobile stops. What is the total distance traveled?

My T.A. explained but I dont understand!! I need help!

2007-05-17 13:44:58 · 2 answers · asked by surfing86 2

many people said dead persons are heavier than fainted ones, is it because dead people is totally "pulled" by the gravitation?

2007-05-17 13:40:03 · 10 answers · asked by Bunda Marinescu 1

2007-05-17 13:20:25 · 5 answers · asked by Anonymous

2007-05-17 12:42:56 · 3 answers · asked by livelovelaugh 3

every human being on the face of the earth jumped up at the same time...and then came down at the same time? Would the earth like....turn into a purple hole.

2007-05-17 12:19:35 · 13 answers · asked by CanadianGuitar 2

Crossword answer with 5 letters ?r???

2007-05-17 12:19:18 · 3 answers · asked by chris c 1

A racecar with a mass of 1500 kg is drivin around a turn that has a radius of 25m . If the coefficient of friction btw the road and the tires is 0.6, how fast can the car go without skiddin

2007-05-17 11:54:19 · 4 answers · asked by damigurl05 1

A dog sits 1.5m from the center of a mery go round and revolves at a tangenital speed of 1.8m/s. If the dog's mass is 18.5kg, what is the magnitude of the centripital force of the dog.

STEP BY STEP EXPLAINATION PLEASE IN "ENGLISH"

2007-05-17 11:37:31 · 2 answers · asked by damigurl05 1

2007-05-17 11:35:40 · 8 answers · asked by Ryoma Echizen 3

2007-05-17 11:17:23 · 8 answers · asked by Football Mom 1

Can it kill some one?

Will they be seriously injured?

Or if you drop a telvision?

2007-05-17 10:46:29 · 12 answers · asked by Anonymous

A bicycle with tires of radius of 0.75 feet is moving w. a constant speed of 25m per hr. the bike had earlier run over a sticker which is now stuck 2 one point on the tire. what is the acceleraration of the sticker

2007-05-17 10:42:33 · 3 answers · asked by damigurl05 1

THe machine cant be more than 12 inches on ne side i cant have a parachute or any aerodynamic devices that will slow it down. no foods that will splatter no wood or metal no duct tape or scotchtape, no bubble wrap or packing materials no silly putty or playdoh. has to be home made out of every day matierals
PLEASE HELP

2007-05-17 10:32:36 · 2 answers · asked by Anonymous

if space is being distorted say by a blackhole, is it possible for light to travel faster to an outside observer. if a black hole is sucking everything inside of it including space and time and light is caught inside of that space that is being pulled around the blackhole could the light in that space be moving faster than the speed of light to an outside observer where space is standing still.

2007-05-17 10:31:13 · 8 answers · asked by SHELLTOE BISCUITS 3

2007-05-17 10:22:28 · 13 answers · asked by Peter j 1

And as bonus, if the water that was doing the climbing was dilluted with something else (say its "Kool-Aid") then does the water itself climb or does the Kool-Aid (e.g. food coloring) climb up as well?

2007-05-17 10:16:45 · 4 answers · asked by Kelly P 1

I have always wanted to make something very powerful and so I wanted to make a magnet but all of my electromagnets are weak what would be able to juice it up my idea is...
Get 200 feet of insulated copper wire
Cut it up into 50 feet each
get 4 9v batterys
and a iron block.

2007-05-17 10:04:56 · 2 answers · asked by Jordan H 1

An object starting from rest, moves to have an angular speed of 2 revolutions/second in a 45 second time period. What is the angular acceleration in radians per second squared. PLEASE EXPLAIN SO I CAN UNDERSTAND STEP BY STEP.

2007-05-17 10:03:25 · 1 answers · asked by damigurl05 1

Does water moving through a hose qualify as a wave? explain why and why not???

10 points to you

2007-05-17 10:01:55 · 2 answers · asked by hey 3

explain in a few words. thnx

2007-05-17 09:53:18 · 13 answers · asked by Anonymous

2007-05-17 09:39:21 · 10 answers · asked by markvermilllion 1

here is the question: A rope attaches a tire to an overhanging tree limb. A girl swinging on the tire has a centripetal acceleration of 3.0 m/s (squared). If the length of the rope is 2.1m what us the girl's tangetential speed. Please can u explain 2 me how to get the answer.

2007-05-17 09:36:13 · 2 answers · asked by damigurl05 1

I am revising for an exam and was confused by a question on a previous exam paper. There is a Sigma particle with a *- next to it. We are asked what is the quark make up of this particle. The - means that it is negatively charged, but what does the star mean? Also what is the answer to the question? Is it {strange, strange, strange}, {strange, strange, down} or {strange, down, down}?

2007-05-17 09:12:04 · 2 answers · asked by Anonymous

I think I am correct in my understanding that the binding energy of a nucleon in an atom is measured in much the same way as the potential energy of a mass on the earth's surface. So as a mass on Earth needs a certain amount of energy in order to reach infinity, where the gravitation exerted upon it by Earth is zero, its potential energy is therefore negative. Then the same is true for the binding energy for a nucleon, and therefore the larger (negatively) the binding energy, the more energy required for the nucleon to escape the nucleus. Is this understanding correct?

My problem is this, I have a graph depicting the various binding energy per nucleon for the nuclei of the periodic table, on this graph the radioactive nuclei have larger (negative) BEPN than helium, so how come helium is more stable. Helium nuclei are emitted from some of these elements as the alpha particle, but my graph shows it to have a lower BEPN. Where am I going wrong? Or is my whole understanding flawed?

2007-05-17 08:46:55 · 2 answers · asked by eazylee369 4

If both have same temperature, pressure, and volume.

2007-05-17 08:43:13 · 13 answers · asked by Alexander 6

2007-05-17 08:19:22 · 22 answers · asked by ryan 1