Physics - December 2006

2006-12-26 21:22:43 · 3 answers · asked by Anonymous

(a)a bullet fired from a rifle.
(b)a football quater back runing at top speed
(c)a horse walking at about 2 miles/hour
(d)an elephant standing still

2006-12-26 20:50:51 · 20 answers · asked by good friend 1

Humans observe their surroundings and make conclusions about physical laws.

As such, without the laws of physics we cannot make distinct generalizations and would have to constantly renew our data because of the non stability of things.

Does the existence of a stable framework, that governs all living things, i.e. a set of laws for existence, prove the existence of an awareness that has created the laws in the first place?

2006-12-26 19:28:57 · 11 answers · asked by Antares 6

Related to electronics

2006-12-26 18:40:43 · 4 answers · asked by chandan27_sachin 1

2006-12-26 17:42:03 · 3 answers · asked by arsenick 2

Please show all work so I can get a full understanding of these questions for the upcoming exam.

http://img406.imageshack.us/img406/6928/... (Diagram)
What is the net electric force on particle 3 due to the other charges?

What is the Electric Field experienced by the -4.0 µC charge due to the other two charges?

2006-12-26 16:57:17 · 4 answers · asked by Anonymous

2006-12-26 16:47:52 · 3 answers · asked by Anonymous

Maybe someone can help me explain this. I have twinkle light (both the same size) on my Christmas tree and running up a pole in my house. I came out the other night when they were both on without my glasses (I'm nearsighted). The lights always look bigger when I don't have my glasses--they look like sort of like perfectly round colored snowflakes. Well, I was standing about 5 feet from the tree and 10 feet from the pole. The circles of light on the poll, from my vantage point, looked about golf ball size...the circles on the tree, which was nearer to me, looked about dime size. I tested this out--when I changed positions and got closer to the pole the sizes reversed. Whenever I got closer to the lights they got smaller...when I stepped away from them they got bigger. With my glasses on they looked the same size.

Anyone have an explaination for this? I'm really curious why the lights looked bigger when I was further away.

2006-12-26 16:19:40 · 5 answers · asked by Ecaria 4

In books i dont understand

2006-12-26 14:42:57 · 6 answers · asked by Ankur 1

can we make something invisible by converting the visible light being reflected by it into any other invisible rays. e.g. x rays, microwaves, infrared etc. Is it possible to do it by increasing or decreasing its wave length? if yes then how?

2006-12-26 13:43:28 · 15 answers · asked by behroz_ahmedali 2

Would you fall up on the other side or get stuck in the middle?

2006-12-26 13:35:41 · 14 answers · asked by Anonymous

A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.20 and the push imparts an initial speed of 4.0 m/s?

2006-12-26 13:33:11 · 7 answers · asked by yo yo ma 2

i think that quantum physics has its answer in all things that you do like if you run so many experiments you will eventualy find a pattern and it will eventually start over

2006-12-26 13:04:58 · 3 answers · asked by mrg5834 1

I was told a mcrowave works on sound energy focused on water molecules to generate heat. If true,where does the elecrical appearing reaction with metal come from?

2006-12-26 12:48:15 · 13 answers · asked by Neil H 1

In the laboratory you are given a cylindrical beaker containing a fluid and you are asked to determine the density of the fluid. You are to use a negligible mass and unknown spring constant attacked to a stand An Irregularly shaped object of known mass and density hangs from the spring. You may also choose a metric ruler, a stopwatch or a string to complete the task.
a. Exp. how you could experimentally determine the spring constant.
b. The spring-object is now arranged so that the object but none of the spring is immersed in the unknown fluid. Describe any changes that are observed in the spring-object system and explain why they occur
c. Exp. how you could experimentally determine the density of the fluid.
d. Show explicitly, using equations how you willuse your measurements to calculate the fluid density.

2006-12-26 12:46:25 · 3 answers · asked by Kitana 2

I myself really do not understand the concept of other dimensions too well and I'm sure many others don't either. I was watching the science channel one day and they were talking about time travel and how it's possible that there are people from the future trapped in our time, because they don't know how to get back. They also mentioned something about how you could time travel and end up in a dimension that looked exactly like the one you are from, but it isn't. The idea that there actually is a future world going on at the same time as our own world is mind boggling. All of the people interviewed were respected scientists, so they obviously knew what they were talking about. What are your thoughts on time travel and other dimensions?

2006-12-26 12:10:27 · 11 answers · asked by Hmmm... 3

In the laboratory, you are given a cylindrical beaker containing a fluid and you are asked to determine the density of the fluid. You are to use a sprinf of negliglble mass and unknown spring constant k attacked to a stand. AN irregularly shaped object of known mass and density hangs from the spring. YOu may choose a metric ruler, a stopwatch, and string to complete the task.
a. Exp. how you could experimentally determine the sping constant
b. The spring object system is now arranged so that the object but none of the spring is immersed in the unknown fluid. Describe any changes that are observed in the system and explain why they occur.
c. Exp. how you could determine the density of the fluid.
d. Show explicitly, using equations, how you will your measurements to calculate the fluid density.

2006-12-26 11:36:36 · 2 answers · asked by Kitana 2

I mean I sort of understand but the dimensions and super strings really throw me for a loop. somebody plese help me uderstand.

2006-12-26 10:55:52 · 11 answers · asked by mrg5834 1

So many people driving around with a break light out, seems the commonest thing that can go wrong? WHY????

2006-12-26 10:41:44 · 8 answers · asked by SUPER-GLITCH 6

I have a solar motor in a glass bulb with 4 solar panels (a gift). I want to read up on how it functions, but I don't know what it is called. Anyone know?

2006-12-26 10:07:27 · 3 answers · asked by gbiaki 2

2006-12-26 10:04:07 · 7 answers · asked by Anonymous

enlarged spider glands, microscopic sticy spikes on knees, elbows, hands, back, and feet, phycic awarness, enhancd streanth and speed. is all this possible?

2006-12-26 09:37:29 · 14 answers · asked by Anonymous

a fork falls form the moon, you know what i mean?

2006-12-26 08:25:05 · 5 answers · asked by that one girl 3

It's kind of moving spatial awareness - even if there were 1000 birds in flight moving very fast, they wouldn't crash into each other because of some sort of built-in system. Does anyone know the name for it? Thanks!

2006-12-26 08:21:15 · 10 answers · asked by stephaniespectacular 2

2006-12-26 07:59:50 · 6 answers · asked by Baderlin A 1

so long as the bottle breaks, does it matter how hard i swing it? like, would it hurt more if i swung the bottle as hard as i possibly could, versus swinging the bottle just hard enough to bring it to it's breaking point? it seems like swinging it harder would exert more force, but is there a limit to the amount of force the bottle could inflict before breaking?

2006-12-26 07:41:15 · 6 answers · asked by jerry 2

I've seen a lot of people saying that mass nears infinity as you reach the speed of light.

Now to me this all sounds like superstitious hogwash, but then they mention that it involves "special relativity". Honestly to me it sure does sound "special", but more in the mentally challenged sort of way.

Maybe it's just me, but here are the parts I don't understand about this theory:

1) Photons have mass. It has been proven that photons have mass, although the mass seems to vary based on the radiant frequency. A photon's mass is not however infinite, and it travels at the speed of light.

2) Electrons have mass, and it is fairly insignificant. They can be made to travel the speed of light, along with many other particles. In fact if you fire a high power laser through plasma, the particles of plasma will actually get taken for a little ride on the laser beam (at the speed of light) and again, no infinite mass.

So what the heck is all this, a joke?

2006-12-26 06:29:08 · 13 answers · asked by DimensionalStryder 4

in my textbook it is mentioned that transverse waves can't travel through liq or gases then how can light or other electromagnetic waves travel through air or water as they are also transverse waves???

2006-12-26 06:06:52 · 6 answers · asked by Annu P 1

2006-12-26 05:49:10 · 1 answers · asked by gary m 1

2006-12-26 05:27:49 · 10 answers · asked by david j k 2