Physics - December 2006

2006-12-30 17:52:43 · 10 answers · asked by PCMCPPE 1

Every time I've heard someone describe entropy, they always use the analogy of a clean room, and say that the natural tendency is for the room to become messy. Now, I'm just starting to learn about entropy, so I don't see any DIRECT connection between the entropy of mixing gases, say, and the "entropy" of a pile of clothes on the floor. Is there some over-arching connection between entropy and all possible systems of things in the universe (e.g. the clothes on the floor), or is it merely an analogy?
Thank you

2006-12-30 17:51:57 · 4 answers · asked by Anonymous

When I tip the can of air duster upside down and spray, a cold liquid comes out. What if I were to point it in my mouth and drink that liquid?

2006-12-30 16:51:41 · 8 answers · asked by Anonymous

2006-12-30 16:42:31 · 10 answers · asked by tupidger 1

2006-12-30 16:17:54 · 6 answers · asked by Rodeo 2

tell me any thing you know that can give me an idea of what it is, or give me some links...

2006-12-30 16:02:14 · 4 answers · asked by John S 2

The Earth spins at about 1000mph at the equator. Since we have a tendancy to follow a straight line, gravity has to counteract to pull us back down. At what rotation rate would we be thrown off the Earth?

2006-12-30 15:47:15 · 8 answers · asked by Zefram 2

may be can provide a few examples with elaborations",

2006-12-30 15:13:38 · 4 answers · asked by neo 1

(continued from above) isolated lithium atom. Why is this so?

2006-12-30 15:08:40 · 3 answers · asked by neo 1

How to prove it using the Doppler effect formula?

2006-12-30 15:00:55 · 9 answers · asked by neo 1

An object is placed at focus of equiconvex lens , it produces parallel beam of rays , does it mean that image will form at infinity ,if yes then what will be its nature , and size ( diminished or magnified

2006-12-30 14:47:24 · 3 answers · asked by Ankur 1

I like this question. Nobody knows the answer but me.

2006-12-30 14:15:37 · 11 answers · asked by wwwwwwwfe 1

I got this school project and I have to write an essay on electromagnetic energy but I cannot find no info on it. It is an energy of course but where can I find info on it or what is it? What would be the uese of it?

2006-12-30 13:44:44 · 9 answers · asked by Anonymous

A book with a mass of 2.0 kg is held in equilibrium on a board with a slope of 60 degrees by a horizontal force. What is the normal force exerted by the book?
A) 39 N B) 61 N C) 15 N D) 34 N
Show/tell me how u got your answer please.

2006-12-30 13:00:06 · 3 answers · asked by need4speed 2

Please explain so that a 4th grader can understand, please. Thank you.

2006-12-30 12:59:51 · 15 answers · asked by nightowl 2

2006-12-30 12:55:31 · 8 answers · asked by Willem V 3

The volume 4\3(pi(10^-15)^3 and it's density is 2x10^14 kg/m^3. The desired volume is 4\3(pi(5x10^-19)^3. I need a specific number.

2006-12-30 12:52:43 · 3 answers · asked by matthias c 2

mgsin(theta) = ma
the m's cancel out and when i find sin of theta i get 0.1224, but how do you get theta alone?

2006-12-30 12:34:05 · 5 answers · asked by My Answers are always right. 2

What is anything?

What is a homosexual? What is red? What is infinite? What is a question?

Anything and everything on this planet is controled by perspective, if 99% of the world had the perspective that aliens existed. It would be a fact. If only 1% did, it would not. Perspective dictates everything that is, was and ever will be.

There are an infinite number of dimensions due to the fact that there is an infinite ammount of actions & reactions to be taken at any point in time, by any person. Which are influenced by there life, seeing as how no two people are exactly alike, this allows there to be an infinite ammount of choices to be acted or not acted upon.

If through our actions and non-actions we create a path ahead with an infinite ammount of choices off of that path, and then more off of the paths, off of the path. Then there is infnite infnite. Which begs the question....

What is perspective? is it something we believe because of our lifes choices, or is it something else ?

2006-12-30 10:43:06 · 10 answers · asked by scottdavidsearle 2

A 2kg steel ball, initially at rest, rolls down a ramp. It experiences an acceleration of 1.2m/s^2. If it rolls a distance of 2.8m, how fast is it travelling? What is the angle of elevation of the ramp?

Ok, so i got the 1st part and i got a final velocity of 2.6m/s but i have no idea how to find theta(angle). Can anyone help me out on this?

2006-12-30 10:38:33 · 5 answers · asked by My Answers are always right. 2

I've been a self-studying physics student and have understood the concepts involving the Special and General Theories of Relativity for a while now. I want to go to the next level now by taking on the mathematics. Thank you for your help!

2006-12-30 10:29:36 · 6 answers · asked by James1126 1

I have read that if imaginary numbers are plugged into the equation then the speed of light is the MINIMUM speed an object with mass can travel. Are there any physicists who can elaborate on this? Is this possible, even in theory?

2006-12-30 09:53:47 · 6 answers · asked by Anonymous

Investigation of d relationship between d length of a metallic conductor (e.g nichrome wire) and its resistance.

Can u help me with this I need info & don't know were 2 find it or can u give me a few tips. txs 4 u help

2006-12-30 09:42:24 · 4 answers · asked by well.theres.a.few 6

Are the laws of the universe, like the various constants, believed to have been determined at the big bang, after it, or are they imposed on every possible reality so that if there were another Big bang they'd come up the same? When did they come into existence, what determined their value, and ae they all linked or independant of eachother?

2006-12-30 09:37:41 · 5 answers · asked by 0 3

2006-12-30 09:19:47 · 7 answers · asked by Anonymous

2006-12-30 08:28:54 · 8 answers · asked by christinanyberg2006 1

2006-12-30 08:08:01 · 3 answers · asked by ishisgreat 1

please help! thanks in advance!

2006-12-30 07:40:29 · 6 answers · asked by Anonymous

Consider two cylinders of gas identical in all respect except that one contains o2 and the other He. Both hold the same volume of gas at SP and are closed by a movable piston at one end. Both gases are now compressed adiabatically to one-third their original volume. Which gas wil show the greater temperature increase?

a)O2
b)He c)neither; both same increase
d)not enough information...

2006-12-30 07:32:49 · 5 answers · asked by wzerocx 2

I'm building a bridge for Physics I out of #8 spaghetti and Elmer's glue (the only allowed materials). Why was it suggested to me that I dry glued spaghetti with a hairdryer before it dries? What does that do as opposed to just glueing and letting it dry naturally?

2006-12-30 07:23:42 · 4 answers · asked by c90 4