Physics - December 2007

In a solid all atoms are arranged close together. Why don't they repel each other. In a atom the last orbit contains electron which have negative charge so why don't the electron repel each other in a solid because they are so close to each other.

2007-12-23 20:12:49 · 3 answers · asked by Anonymous

2007-12-23 20:08:14 · 8 answers · asked by Anonymous

A building is pushed on real hard by wind, and starts to lean; how do you slowdown or even stop this action, without pushing on the opposite side with equal physical force?
There is an answer to this.

2007-12-23 18:25:11 · 5 answers · asked by Anonymous

i think due to distance

2007-12-23 17:37:28 · 2 answers · asked by marghoob inam naghmi 1

Is that what 4D looks like?

lol!

2007-12-23 15:18:29 · 3 answers · asked by Anonymous

Is there anywhere on a sine wave that is 'linear' - like, say, where a 'particle' is just 'coasting'? How 'big' is that spot? What are the maths thereof?

2007-12-23 14:59:10 · 3 answers · asked by c0cky 5

Please explain with the laws of physics, how it is that Reindeer are somehow able to fly with out any apparent wing structure?

2007-12-23 14:07:49 · 5 answers · asked by Smart Dude 6

A 10kg iron ball and a 5kg iron ball have the same acceleration when dropped from rest from the same height because
1) action = reaction
2) the ratio of the gravitational force to mass is the same for both
3) the gravitational force is the same for both
Explain

2007-12-23 13:46:32 · 4 answers · asked by Sanny 1

A block with a mass of 2kg rests on a horizontal table. The force exerted by the table upon the mass is
1) 0N
2) 2N
3) 9.8N
4) 19.6N
explain~

2007-12-23 13:43:27 · 5 answers · asked by Sanny 1

If the earth had no air (atmosphere) or mountains to interfere, could a satellite given adequate initial velocity orbit arbitraitly close to the earth's surface -- provided it did not touch?

a) Yes, it could.

b) No, orbits are only possible at a sufficient distance above the earth's surface where gravitation is reduced.

2007-12-23 13:41:29 · 2 answers · asked by ? 6

In you solve this, you will have a new view of the universe, one that solves three longstanding problems: the dual nature of photons, nonlocality (action at a distance), and consciousness. And, our mathematics may be seen as derived from spacetime, not creating it. So the real question is: what is reality?

2007-12-23 13:24:18 · 2 answers · asked by jeffreypschaffer 1

2007-12-23 12:52:10 · 11 answers · asked by jerry 1

Does anyone know the exact downwards force the comes out of a compressed tank of air, to any size?

2007-12-23 12:15:25 · 2 answers · asked by gmaguitar01 1

I understand they are two different forms of energy, but is there a possibility of using light energy to produce sound?

2007-12-23 10:42:26 · 6 answers · asked by How To Save A Life 2

2007-12-23 10:42:16 · 3 answers · asked by Sharif S. 1

A piece of solid carbon dioxide, with a mass of 8.2 g, is placed in a 4.0 L otherwise empty container at 27°C.

(a) What is the pressure in the container after all the carbon dioxide vaporizes?
__________atm
(b) If 8.2 g solid carbon dioxide were placed in the same container but it already contained air at 740 torr, what would be the partial pressure of carbon dioxide?
__________atm
(c) What would be the total pressure in the container after the carbon dioxide vaporizes?
__________atm



Thanksss you guys !(:

2007-12-23 10:17:07 · 2 answers · asked by Anonymous

2007-12-23 09:48:59 · 5 answers · asked by Anonymous

suppose you have a flashlight in one hand and a mirror in the other. turn on the flashlight and photons of light will travel towards the mirror. BUT, when the photons hit the mirror, they will reflect. This implies that while hitting the mirror, the photons decelerate to 0 m/s and continue to decelerate to -c (negative speed of light). In other words, light reflecting off of a surface must reach 0m/s. But doesnt this defy the second postulate of special relativity (light always travels at the speed of light)?

2007-12-23 09:20:25 · 8 answers · asked by Hi 2

2007-12-23 09:05:14 · 10 answers · asked by Anonymous

2007-12-23 08:57:06 · 6 answers · asked by jetfighter 6

will the bullet leave the atmosphere, burn up in the atmosphere, or come back down and nail me if i shoot up exactly straight?

- i saw movies where people shoot up in the air, and i just wanna know waht would happen in real life

2007-12-23 08:22:25 · 25 answers · asked by uwillnomyname 4

this seems like a simple question...most people would answer "by newton's third law"...however, consider this:
an object is traveling at a velocity of 5m/s at a solid brick wall. The acceleration of the ball is 0 and thus, the ball is moving w/ a force of 0 N (F = ma = 0m = 0). obviously, the ball will bounce back off of the brick wall, but this cannot be caused by newtons third law can it??--there is no action force to cause a reaction force in the opposite direction...when the ball collides into the wall, there is no force pushing it, so how can there be a force pushing the ball backwards?

2007-12-23 07:59:43 · 19 answers · asked by Hi 2

2007-12-23 07:45:08 · 12 answers · asked by CAN777 1

Is this plausible:
Our solar system is located near the center of a finite distribution of galaxies. Although this cannot be proven for certain at present, it is fully consistent with the evidence; so it is a reasonable possibility.In that case, the earth would be in a gravitational well. This term means that it would require energy to pull something away from our position into deeper space. In this gravitational well, we would not feel any extra gravity, nonetheless time would flow more slowly on earth (or anywhere in our solar system) than in other places of the universe. This effect is thought to be very small today; however, it may have been much stronger in the past. (If the universe is expanding as most astronomers believe, then physics demands that such effects would have been stronger when the universe was smaller). This being the case, clocks on earth would have ticked much more slowly than clocks in deep space. Thus, light from the most distant galaxies would arrive on earth!

2007-12-23 07:42:16 · 11 answers · asked by Stannnn 3

There are two slides at the park between which you are deciding. Both start at a height of 6 m. One is short and steep while the other is long and shallow. If both slides are frictionless, which one should you choose if you want to be moving as fast as possible at the bottom? Why?

2007-12-23 07:36:24 · 7 answers · asked by tragiclove430 1

It MUST travel a distance of 4 meters.
It can not be taller than 19 inches.
It can not be longer than 14 inches.
Please help! With as much detail as possible!

2007-12-23 07:18:26 · 1 answers · asked by alexpurrsaid 1

When you look at the information on a photon the image is only visible from the front...What does the back/sides of the photon look like?

2007-12-23 06:43:21 · 3 answers · asked by Java Junkie 1

M= 1 kg. After the bullet hits the stationary block and is embedded in it, the maximum rise of the pendulum is observed to be h =0.1 m.

a. Find the initial velocity, V, of block and bullet after the collision.

b. Find the initial velocity, v, of the bullet.

Click on link to see a picture.http://img.photobucket.com/albums/v63/xmattbrettlockx/Physics12.jpg

2007-12-23 06:39:15 · 2 answers · asked by joe s 1

2007-12-23 06:14:28 · 3 answers · asked by Anonymous

this is a physics question that not alot of people know answer it to get a 5 point best answer thank u ..........

for a constant force suppouse the duration of impact on an object doubles
a. how much impulse is increased?
B. how much is the resulting change in momentum increased?

2007-12-23 06:07:14 · 6 answers · asked by muslim gurl 1