Physics - August 2006

2006-08-17 06:40:18 · 16 answers · asked by brian f 1

I'm looking for a supplier of small screws (probably custom machined) that can remain non magnetic in high fields 5-10 tesla or more. My original material was colsibro but I believe there are other materials that can be used.
Additional Details

15 minutes ago
Sorry, I should have added that need to be conductive and ultra high vacuum compatible (no brass...contains zinc) and relaively high load (no aluminum and I'm looking for metric M1.6 x ~5mm

2006-08-17 06:05:03 · 8 answers · asked by Taoman 2

2006-08-17 06:00:37 · 26 answers · asked by w359borg 4

Why permittivity of any space is equal to permittivity of free space?

2006-08-17 05:56:25 · 6 answers · asked by star123 2

i have given my tenth. how can i go ahead if i want to have a carer in astronomy/astrophysics

2006-08-17 05:53:47 · 9 answers · asked by Anonymous

When you look at a wheel spinning, a point near center of the wheel obviously goes around the center the same number of times that a point on the circumference. The point on the outside covers a larger distance than the point near the center. Does this mean that the point on the outside has a faster speed? I know that it must not be the case, but it is sure confusing to think about, the point in the center actually looks like it has the faster speed!

2006-08-17 05:43:29 · 8 answers · asked by Rick M 2

The speed of a wave is 65m/sec. If the wavelength of the wave is 0.8 meters, what is the frequency of the wave?

2006-08-17 05:10:10 · 5 answers · asked by jonessunrunner1 2

2006-08-17 04:42:47 · 15 answers · asked by Anonymous

A police car moves at 50m/s in the same direction as a truck that has a speed of 25m/s. The police siren has a frequency of 1200 Hz. What is the frequency heard by the truck driver when the police car is behind the truck? take the speed of sound to be 350m/s

2006-08-17 04:31:20 · 6 answers · asked by jonessunrunner1 2

I'm totally new to the study of quantum physics, and I need an explanation of one of the basic principles. I've read many references to the fact that our observation of an item changes it's state, such as the scenario proposed in "Schroedinger's Cat". How exactly does observation of a subject change it's state?

2006-08-17 04:16:56 · 41 answers · asked by buddhasmash 2

2006-08-17 04:15:03 · 18 answers · asked by Ooops 1

An aeroplane is rising up with the speed 100m/s.at a moment a pecket is dropped from it which reaches the ground after 50 sec .calculate height of the aeroplane when the packet was dropped......

2006-08-17 04:11:15 · 8 answers · asked by THE FANTASY PRINCESS 2

2006-08-17 04:06:55 · 3 answers · asked by RAHUL 1

As the theory goes, if you place a cat in a box with a radioactive particle, and said particle decays, the cat is then neither alive nor dead until someone observes the cat to determine it's state. How exactly does this theory work? Please be thorough. I'm certainly no expert on quantum mechanics.

2006-08-17 03:51:38 · 7 answers · asked by buddhasmash 2

Photon generation occuring by a close encounter of an electron with a nuclear positron where a little piece of each breaks off to form the photon.

2006-08-17 03:47:07 · 6 answers · asked by Fredrick Carley 2

the object lies along the axis of a concave mirror with radius of carvature of 0.3 m, and the near end of the object lies 0.18 m from the mirror

2006-08-17 03:40:13 · 4 answers · asked by polly t 1

Energy = Force*Displacement. But if i press against a wall, there is no displacement, but i do get tired in this process. So why is energy consumed?????

2006-08-17 03:34:48 · 11 answers · asked by the_answerer 2

2006-08-17 02:38:25 · 6 answers · asked by Vijay 2

2006-08-17 02:34:08 · 12 answers · asked by Sheree P 2

Reference:
J.V.Narlikar`s Adventure-fiction

2006-08-17 02:31:05 · 2 answers · asked by Anonymous

Solar cells have two problems: 1 high cost 2. low efficiency What are the prospects that either of these is going to change ?

2006-08-17 02:21:29 · 5 answers · asked by Sjors d 2

I understand quantum physics when explained by the two slit experiment using electrons (demonstrating the wave particle duality, measurement affecting the system etc). I am reading about a similar experiment which is supposed to explain the same thing but I don't understand it. 45 degree polarised Light is incidented on an H/V polariser which splits it into vertical and horizontally polarised light, the separate beams hit two separate + and - 45 polarisers splitting each separate beam into two more beams and then onto detectors. Isn't the 45 degree polarised light already polarised? how does the H/V polariser split it into two more beams? even then, how do the beams out of the H/V polarised get further polarised by the + and - 45 polariser? and The author of my textbook is CRAP!

2006-08-17 02:09:27 · 3 answers · asked by thedudeomeister 2

Light can be refracted by traveling in various transparent mediums. Light is just one of the electromagnetic wave ranges. There are others, including Xrays and Gamma rays. It seems we can not focus these other kinds of rays. So I guess that they can not be refracted. Why not, are they too short?

2006-08-17 02:04:20 · 5 answers · asked by Roland O 1

2006-08-17 01:16:48 · 4 answers · asked by the plug is made of awesome 3

2006-08-17 00:57:58 · 7 answers · asked by Anonymous

2006-08-17 00:47:10 · 11 answers · asked by coyi m 1

Does a fan translate a block of air from the fan to another location or away from the fan, or do the blades just set up a longitudinal vibration of air (as it rushes around from the front to the back of the blade as it passes), and the vibration proagates as an air compression....in the same way as if you "push" quickly on a streched slinky spring and the compression travels to the other end ...but the metal of the spring does not move. Similar also to waves on water where the actual water particles move in a circle and do not propagate with the wave itself.
If the fan does just create a vibration that moves the air at a distance but does not move air to the distant place, then why do smells travel with the wave (apparently blown by the fan) and does standing a block of ice in front of the fan move cold air from around the ice to another location...

2006-08-17 00:40:58 · 5 answers · asked by Taoman 2

2006-08-17 00:13:20 · 37 answers · asked by nudz 1

Does any one knows the string theory ? If yes then can you explain it to in a simple way?


lol

2006-08-17 00:03:02 · 20 answers · asked by Anonymous

please compare the instruments on the basis of the quality, pitch and loudness of the sound produced by them.

2006-08-16 23:44:09 · 2 answers · asked by shaleen c 2