Physics - August 2007

According to Super-String theory, it is tiny, tiny one-dimensional strings of vibrating energy that allows for the exists of matter at every level of structure. According to Brian Greene of, The Fabric Of The COSMOS, it is the frequency and amplitude of the vibrations of these tiny bits of string energy that results in matter and the general characteristics of matter.

Since any given string is capable of vibrating at any of a large number of frequencies and amplitudes, what regulates string behavior and thus, creates "stability" in the resulting forms of matter? Without some form of control, what keeps a given string from vibrating at anyone of a large number of frequencies at any one time? Does the mathematics have anything to say about control and regulation of string behavior over time?

Can such string variations be correlated with phase-transitions in matter, like when water goes from solid to liquid to steam?

2007-08-06 10:09:33 · 8 answers · asked by Bob D1 7

2007-08-06 09:59:05 · 12 answers · asked by Brundle 1

I managed 6 times but I think there is a limit regards of the size you start with

2007-08-06 09:29:08 · 25 answers · asked by Anonymous

2007-08-06 09:25:44 · 2 answers · asked by Help 1

1. What r some similarities and differences between the electric force and gravitational force ?

2. A small glass rubbed silk gains a charge of + 2.0 C. THe glass ball is placed 12 cm from charged rubber ball that carries a charge of -3.5 C
a. What is the magnitude of the electric force between the 2 balls?
b. Is this force attractive or repulsive?
c. How many electrons has the glass ball lost in the rubbing process?

2007-08-06 09:23:59 · 2 answers · asked by Brilliant Queen (BQ)_forever !!! 5

A pair of narrow slits, separated by 1.8 mm is illuminated by a monochromatic light source. Light waves arrive at the two slits in phase. A fringe pattern is observed on a screen 4.8 m from the slits
monochromatic light of 450 nm wavelength is used. The angular separation between adjacent dark fringes on the screen, measured at the slits, in m rad, is closest to:


a.0.20
b. 0.36
c. 0.15
d. 0.30
e. 0.25

2007-08-06 09:16:17 · 2 answers · asked by ABC 4

If the crate has a mass of 100kg how much force would be rquired to start it sliding...
I want to kno the formula. am not sure the 1 am using is correct

2007-08-06 09:13:00 · 3 answers · asked by xplicit 2

A charge q1 of -5*10 ^ -9 and the charge q2 of -2 * 10 ^-9 C are seperated by the distance of 40 cm. Find the equilibrium position for a third charge +15*10 ^ -9 C.

2007-08-06 08:57:23 · 2 answers · asked by Brilliant Queen (BQ)_forever !!! 5

I have no physics background.

2007-08-06 08:46:39 · 3 answers · asked by lee s 1

Please help me with these questions:
Describe the stationary orbit of the surveillance satellites and give a general outline of how the satellite maintains a fixed position relative to an observer on Earth.
Make a list of advantages and disadvantages of satellite surveillance, explain why each is an advantage/disadvantage, and relate the advantages/disadvantages to individual rights and social issues.

2007-08-06 08:02:40 · 5 answers · asked by Elisa 2

I majored in Soc & Econ under the social scinces in my school's liberal arts department. I know calculus fairly well and have taken Astronomy so I touch on classical physcis somewhat (I took AP Physics in HS). Discussion wise I am familiar with what is happening in the quantum world and cosmology, but the finer details-the math and formulas need work. I have a book and have began studying rigorously. My only concern is the "laboratory" section and the math on the GRE subject exam. Realistically, will my lack of the first three years of undergrad in physcis truly inhibit me from learning those sections and topics on my own? Is it naive of me to think I can do it? I would like to go into grad school for this seeing that i find it fascinating. Someone who knows would be of great advice! Thanks in advance!

2007-08-06 07:18:48 · 5 answers · asked by Anonymous

2007-08-06 07:06:09 · 3 answers · asked by Brilliant Queen (BQ)_forever !!! 5

if we want to trap the light between then for infinitely long time?

The distance between the mirrors is 1m.

2007-08-06 06:27:36 · 3 answers · asked by Alexander 6

Lets assume that humans live 80 years.

2007-08-06 05:42:10 · 5 answers · asked by Alexander 6

Unfortunately there is a frog sitting in the middle of the creek, who can jump with initial velocity 5m/s in either direction, and swallow the grasshopper in mid-air.

What is minimal initial velocity required to jump over the frog to the other bank of the creek?

2007-08-06 05:12:38 · 2 answers · asked by Alexander 6

2007-08-06 05:11:41 · 13 answers · asked by A`A A 1

2007-08-06 05:10:04 · 10 answers · asked by A`A A 1

2007-08-06 05:08:50 · 14 answers · asked by A`A A 1

2007-08-06 04:40:19 · 11 answers · asked by STORMY 5

F=GMm/(r^2), g=GM/(r^2), Gravitational potential energy= -GMm/r , gravitation potential= -GM/r.
With all these similar equations, how do you memorise it and apply it correctly when facing a physics question??? I get a bit confused whenever i see all the equations. I would like to ask the physics experts on ways to understand all these equations in a simpler way???
(i must say that i have not been coping well with this gravitational field topic in school due to its complicated equations)

2007-08-06 04:01:57 · 5 answers · asked by Lonelyz 1

i mean like, would it suck u up if it went the other way? i dont CARE if i sound like a retard!!!

2007-08-06 03:55:42 · 5 answers · asked by Yum. 3

A baseball player dives into third base with an initial speed of 7.9 m/s. If the coefficient of kinetic friction between the player and the ground is .41, how far does the player slide before coming to rest?

2007-08-06 03:13:37 · 4 answers · asked by Waverly Pascale 3

like in a leaf when the dew drops fall frm it falls like a pearl round in shape is it something related wit density of air or pressure of air plz explain

2007-08-06 03:09:37 · 11 answers · asked by varshithatp 2

2007-08-06 03:03:04 · 2 answers · asked by svly 1

2007-08-06 03:01:19 · 4 answers · asked by svly 1

2007-08-06 02:54:15 · 2 answers · asked by svly 1

pls explain the chemical reactions and stuff like that...

2007-08-06 02:53:40 · 2 answers · asked by kath_leenss 2

If you were travelling at the speed of light, assuming it was even possible, would you age? Would your watch stop?

No really technical mathmatical answers please. They dont help really.

2007-08-06 02:35:46 · 13 answers · asked by futuretopgun101 5

2007-08-06 02:30:05 · 2 answers · asked by Shahid 7

with the mass of .6 grams at 625 feet/second. I need formulas here people I am going crazy.

2007-08-06 02:27:03 · 3 answers · asked by Kerry Q 2