Physics - January 2007

Explaining exactly what gravity is can be difficult, so maybe it's better to start out small by identifying its characteristics.

2007-01-03 06:40:45 · 16 answers · asked by Bob G 6

Do do with pressure/hydraulics?

2007-01-03 06:36:25 · 8 answers · asked by Anonymous

2007-01-03 06:04:00 · 6 answers · asked by Anonymous

2007-01-03 05:47:22 · 11 answers · asked by Numptyhead 2

you know, from the theory of relativity we obtain:

(dx)^2+(dy)^2+(dz)^2+(c*dt*i)^2=(ds)^2

where dx, dy and dz are distances measured on their respective axes x, y and z.

i is an imaginary number

and c*dt*i is a temporary dimension

and applying the theorem of pythagoras to each coordinate you obtain a "space-time" distance.

I understand that, what I don't understand is the phisical meaning of a "space time distance"

¿what is exactly a space-time distance?

sorry if you find a mistake in the text, I don't speak english very well, I speak spanish.

2007-01-03 03:54:00 · 6 answers · asked by paul0txyz 2

IS it related to thermal expansion?

2007-01-03 03:43:17 · 10 answers · asked by karush 2

I have a device that puts out a consist tempeture when it is in operation. I would like to know how to convert the time and temp during operation to a BTU per time period.

2007-01-03 03:35:21 · 5 answers · asked by wrench277 1

You may have read the article in popular science. Do you think that space itself could be bent for space travel.

2007-01-03 03:27:33 · 4 answers · asked by Michael n 2

I think we have the theory of light backwards. My theory is that all light sources (the sun, fire, light bulbs, ect.) actually suck the dark away, thus making an area lighter.

Look at a flouresent light bulb that's been used a long time, the ends are dark as apposed to a new one. I believe that's because it has sucked so much dark that it's starting to fill up and needs to be replaced. They say the sun will explode in another 3-5 billion years. I believe that by that time it will have sucked up so much dark that it will have to implode. And I'll bet anything that the implosion will throw all that darkness out and make this part of the galaxy much darker.

2007-01-03 03:23:29 · 12 answers · asked by Anonymous

2007-01-03 03:19:03 · 8 answers · asked by Michael n 2

2007-01-03 03:15:14 · 2 answers · asked by anne2679 1

If mirrors need light to work, what happens if you put night vision goggles on in the dark and look at a mirror?

2007-01-03 03:01:41 · 8 answers · asked by Anonymous

2007-01-03 02:56:34 · 5 answers · asked by prof fluff 1

Postive to negative or the other way around?

2007-01-03 02:47:12 · 9 answers · asked by kangaroo 4

If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released, it will oscillate. If it is displaced a distance 0.130 m from its equilibrium position and released with zero initial speed. Then after a time 0.803 s its displacement is found to be a distance 0.130 m on the opposite side, and it has passed the equilibrium position once during this interval.


A- Find the amplitude.
B- Find the period.
C- Find the frequency

2007-01-03 01:42:23 · 2 answers · asked by hadoi 1

based on principle of thermal expansion

2007-01-03 01:36:18 · 4 answers · asked by srinivas_pisces 1

Suppose all trees on the earth are cut, wud earth rotate faster? (as average radius decreases and law of conservation of angular momentum is to be conserved)

2007-01-03 01:01:27 · 11 answers · asked by ? 3

please tell me the scientific principle behind the working of an ink pen.

2007-01-03 00:39:52 · 3 answers · asked by krithika R 1

please tell me the scientific principle behind the working of an ink pen.

2007-01-03 00:38:20 · 2 answers · asked by krithika R 1

i want to know is there any method of converting sound energy or noise into electrical energy

2007-01-03 00:37:30 · 5 answers · asked by dev 1

please tell me the scientific principle behind the working of an ink pen.

2007-01-03 00:36:43 · 7 answers · asked by krithika R 1

If so, how soon will such a feat be possible? Within our lifetimes?

2007-01-03 00:11:32 · 2 answers · asked by Anonymous

It has been proven in experiments that sub-atomic particles change their behavior when being viewed by a human being in real time than if they were just recorded by a machine and viewed later.

What could the possible reason be that the sub-atomic particles seem to "sense" they are being watched and thus change their behavior?

Possible explanations:
1. It is God waving hello.
2. Human thought affects sub-atomic particles and thus, human thought actually can shape reality.
3. It's just weird.

Any thoughts?

2007-01-03 00:06:32 · 8 answers · asked by mitchellvii 2

It does not matter the diameter of the pole. Consider the large bulk of string at the top of the pole as coming off the top center of the pole and then there will be no confusion as to the difference it makes if considering the large ball of string.It does not matter the size of the string. The question is how far does the bird fly when unravelling a mile of string at the top of a pole by flying in many circles around the pole to unwind the string.

2007-01-02 23:43:37 · 1 answers · asked by David C 2

2007-01-02 23:37:46 · 5 answers · asked by Anonymous

2007-01-02 23:17:54 · 3 answers · asked by dapperwilliam 1

is it possible if you like hook a carridge kinda a thing to a light beam and move with it?
like we use horses and cars for transportation can we use light??

and can light move sound or water?

2007-01-02 22:50:10 · 8 answers · asked by Anonymous

2007-01-02 21:53:40 · 17 answers · asked by Anonymous

We recycle paper at my work by shreddin everythin.

Lets say I have 10Kilo's of paper to shred- once its shredded, it's as light as anything, but the same amount of paper! Why is this?

Best answer will be chosen! lol

2007-01-02 20:46:08 · 20 answers · asked by wragster 3

And drop her from a height, will it spin around and around in a type of perpetual motion.

Buttered toast always lands face down but cats always fall on their feet.

2007-01-02 20:41:24 · 18 answers · asked by Anonymous