Physics - September 2006

2006-09-29 05:36:35 · 1 answers · asked by Juan R 1

electron like in elastic coalitions? Would the photon be at rest? I know that electromagnetic radiation never is at rest so how can you explain it?

2006-09-29 05:15:08 · 5 answers · asked by Anonymous

We have been told that it would take 4 years travelling at the speed of light to reach the nearest star (other than the sun). We are also told that the faster we travel, time is dilated, ie a pilot of a spaceship traveling at close to the speed of light would percieve time differently to an observer on Earth. So the questions is, from who's perspective would it take 4 year to reach the nearest star, the pilot or the earthbound observer?

2006-09-29 04:29:17 · 11 answers · asked by topeuph 1

saw tv 2 years ago promising computer assisted noise cancellation projected to replace car muffler among other uses.

2006-09-29 04:26:37 · 4 answers · asked by enord 5

Let's see what most people think about this.....

2006-09-29 03:52:46 · 6 answers · asked by Shane L 3

2006-09-29 03:29:57 · 15 answers · asked by Anonymous

Do two people see the same colours exactly the same?How do we able see colour?

2006-09-29 03:13:55 · 12 answers · asked by joe 4

Is it normal and common?

2006-09-29 03:02:39 · 9 answers · asked by joe 4

If anyone can help that would be great. I've heard a bit about string theory, but I don't quite understand it (well.. at all.) So it's thought that there are something like 11 dimensions, but we only live and participate in 4 of them (including time)... and then the other 7 are wrapped into tightly wound "strings".. I don't get it!!! If the 4 dimensions that we live in are so interrelated, how can there be 7 dimensions that just don't really apply for our existence? And if they do apply - how do they apply? How can a dimension be a tightly would string at all? What are they there for? Does anything exist in these other dimensions? (If anyone could point me in a direction where I could get an idea on some of these ideas about string theory I would greatly appreciate it... ) I am a bit stuck on these questions and can't stop thinking about them!!

2006-09-29 02:50:54 · 4 answers · asked by River 3

the free fall of any material at any sea level

2006-09-29 02:48:45 · 7 answers · asked by scs 1

Please help me (the two Questions are seperated, the second question has "a" and "b")

1.

Two vectors A and B have magnitude A= 3.00 and B= 3.02

Their vector product is A x B = -5.06 k + 1.91 i

What is the angle between A and B
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2.

(see the picture for question number 2)

http://img100.imageshack.us/my.php?image=joo9.jpg


a.

If R is the sum of three vectors (A,B,C) and it equals 16.6 m, find it's direction (take an angle positive counterclockwise from the + x-axis)

b. Find the magnitude of the vector S=C-A-B, and it's direction

thanks a lot in advance

2006-09-29 02:29:23 · 1 answers · asked by Cat Stevens 6

2006-09-29 02:10:19 · 18 answers · asked by Anonymous

2006-09-29 02:03:37 · 3 answers · asked by chica1012 2

a ball is dropped from the roof of a tower of height h.the total distance covered by it in the last sec of itz motion is equal to the distance covered in first three sec. What is the value of h in mts?
(g=10m/s^2)

on solving i got answer as 100mt but itz actual answer is 125mt

so plz help me

2006-09-29 02:02:09 · 2 answers · asked by confused 1

2006-09-29 01:57:23 · 5 answers · asked by Emily 2

2006-09-29 01:53:40 · 4 answers · asked by behroz_ahmedali 2

2006-09-29 01:19:20 · 4 answers · asked by Anonymous

2006-09-29 01:18:35 · 5 answers · asked by Anonymous

This is the title of science fair project. what do u think is it a good title or too simple?

Plz tell me some good ideas for science fair project because iam participating in a tough competetion.

I will be thankful to u all !!!!!

2006-09-29 00:56:28 · 5 answers · asked by behroz_ahmedali 2

What would happen when an unstoppable object collides with an immoveable object

2006-09-29 00:37:57 · 20 answers · asked by wozza.lad 5

2006-09-29 00:32:24 · 12 answers · asked by mick t 5

2006-09-29 00:23:47 · 19 answers · asked by Anonymous

2006-09-29 00:17:14 · 6 answers · asked by mhdow2000 2

they are seven colours in the rainbow,why no black?

2006-09-29 00:01:17 · 12 answers · asked by Zion 1

2006-09-28 23:28:20 · 12 answers · asked by Anonymous

2006-09-28 23:28:12 · 6 answers · asked by Anonymous

Given:
distance d the projectile launcher from a wall
angle A the projectile is launched at
vi the velocity [vector] it is launched at

With the information, I conclude that:
x(t) = (vi*cosA)t
y(t) = (vi*sinA)t - 1/2 g t^2 g being the gravitational constant.

Now, I have to write y in terms of x [suggestion was 'eliminating' the t]. I have extremey difficulty doing so, please assist!

2006-09-28 23:01:10 · 1 answers · asked by Obsidian A 2

2006-09-28 21:28:56 · 3 answers · asked by amir m 1

2006-09-28 21:15:58 · 4 answers · asked by poc 2

Diamonds are very hard, certainly harder than steel but could they stand up to a blow like that? I know they be split by striking them a certain way without alot of force.

2006-09-28 20:13:29 · 13 answers · asked by AmigaJoe 3