Physics - February 2007

2007-02-02 03:03:52 · 5 answers · asked by ikram c 1

why hasnt this solar light pressure affected the orbit of the planets in some way? It seems to me that over the course of billions of years it would actually have driven the planets away from the sun

2007-02-02 02:53:19 · 8 answers · asked by David W 3

2007-02-02 02:26:49 · 4 answers · asked by Anonymous

question is based on the concept of electric charges

2007-02-02 02:25:51 · 3 answers · asked by dr.jasdeep 1

minimum distance of 1.00 X10^-15m.

2007-02-02 02:13:39 · 1 answers · asked by rkh 1

I am not a mathematician though, I am curious to know.

2007-02-02 01:02:09 · 12 answers · asked by jeet 1

Since water swirls the opposite direction in the Southern hemisphere, why don't we make clocks that rotate counter clockwise for people who live and travel there?

2007-02-02 00:54:39 · 5 answers · asked by Sky Salad Clipper 3

2007-02-02 00:51:55 · 1 answers · asked by yan 2

1.
The photons travel with the speed of c=1.
At the speed of c=1 a photon does not has age.
It's time is virtually a dead stop.
2.
According to quantum theory, the particle's mass increases
at approaching to the speed of light quantum.
And at achievement of this speed,
the particle's mass becomes infinite.
But the quantum of light is real particle and
its mass is particular and not infinite.
How to understand this contradiction?
And why the quantum of light has such magic
constant speed of motion с = 1 ?
The scientists invented an artful way to explain it :
the quantum of light does not possess the mass of rest
because it always in motion.
All other material particles have the mass of rest and
only quantum of light has m = 0.
Is it possible?
????
The Soviet/Russian academic S. Vavilov suggested an
interesting idea. In his book 'Isaac Newton' he wrote.
The force, according to the Newton,s Second Law,
is equal to : F= ma.
This force is possible to consider as absolute independent
quantity - impulse. When in case with light quanta
the impulse is equal to: mc.
He continued.
Let us now imagine that light quanta falls on a black body,
and it absolutely absorbs this light quanta
( it means light quanta stops).
Then, according to the Lebedev,s law, light quanta
renders pressure on the black body: E/c.
Therefore it is possible to write: mc=E/c.
It means that according to Classic physics the stopping
light quanta has rest (potential)mass (potential energy):
M=E/c^2 , (E=Mc^2).
=========================
What is your opinion?

2007-02-02 00:28:23 · 2 answers · asked by socratus 2

2007-02-02 00:13:19 · 5 answers · asked by student 2

2007-02-02 00:08:39 · 2 answers · asked by Anonymous

If this could be done fairly cheaply, diamond would become a hugely important engineering material. Diamond would be an immensely strong structural material, for example, enabling the construction of much higher skyscrapers and longer bridges than current ones. Diamond might also be used for applications such as turbine blades, although the low toughness of diamond would need to be overcome. As the toughness of a diamond sample varies depending on the orientation of the sample, it may be possible to make high-toughness components from a diamond-based material (perhaps by having many thin layers of diamond, with each layer having a different crystal orientation to adjacent layers).

2007-02-01 23:49:19 · 5 answers · asked by martin48732 1

And become Zero Visibilty for Fishes and Sharks thereafter given that it is a bright sunny afternoon or it is a full-moon day apart from it being a clear sky.
And what do they do for light after that point? Do they stay put weherever they are ?
Or try to move and swim in the dark too, and in the process, accidentally collide head-on each other and 'injure' themselves?
Or do they have some natural mechanism in their eyes (like Cats have: I think so about cats)to see in dark too (Zero visibilty to noramal human eyes) and manage to wander as freely as they 'like'?

2007-02-01 23:45:11 · 3 answers · asked by jeet 1

If this could be done fairly cheaply, diamond would become a hugely important engineering material. Diamond would be an immensely strong structural material, for example, enabling the construction of much higher skyscrapers and longer bridges than current ones. Diamond might also be used for applications such as turbine blades, although the low toughness of diamond would need to be overcome. As the toughness of a diamond sample varies depending on the orientation of the sample, it may be possible to make high-toughness components from a diamond-based material (perhaps by having many thin layers of diamond, with each layer having a different crystal orientation to adjacent layers).

2007-02-01 23:43:39 · 2 answers · asked by martin48732 1

String theory predicted ten dimensions, but as it got more and more complicated (five theories instead of one), it became clear that what was really need to unify them was eleven dimensions, which had been predicted by another theory, quantum gravity. However, now that both have evolved into M-Theory, that brings me to a basic unanswered question. Is M-Theory really a "unified field theory?" Does it bring gravity into the equation by invoking that extra dimension? If so, how does it unify the electroweak, strong and electromagnetic forces with gravity? I've never heard a simple explanation that didn't require a Ph.D. in Physics.

2007-02-01 23:34:05 · 4 answers · asked by Anonymous

Does this contradict with Coulomb's law on electrostatics?

2007-02-01 23:30:38 · 5 answers · asked by student 2

The Soviet/Russian academic S. Vavilov suggested an
interesting idea. In his book 'Isaac Newton' he wrote.
The force, according to the Newton,s Second Law,
is equal to : F= ma.
This force is possible to consider as absolute independent
quantity - impulse. When in case with light quanta
the impulse is equal to: mc.
He continued.
Let us now imagine that light quanta falls on a black body,
and it absolutely absorbs this light quanta
( it means light quanta stops).
Then, according to the Lebedev,s law, light quanta
renders pressure on the black body: E/c.
Therefore it is possible to write: mc=E/c.
It means that according to Classic physics the stopping
light quanta has rest mass: M=E/c^2. (E=Mc^2).
=========================
What is your opinion?

2007-02-01 23:29:25 · 5 answers · asked by socratus 2

If there are black holes in the heart of every galaxy, and maybe microscopic ones all around us, too, are there also "white holes," areas of spacetime where matter streams into the Universe from another membrane? Have we found any, or are they only figments of Frank Tipler and Kip Thorne's imaginations?

2007-02-01 23:25:05 · 2 answers · asked by Anonymous

There may be some questions where only higher learnt persons or Noble Prize Winners in Science or Academy of universe Science Academy can answer but it is not answerable from an ordinary person? What is your suggestion?

2007-02-01 22:28:19 · 2 answers · asked by misraop2004 5

When we mixed red, blue and gree light, we get white light. When we mixed red, blue and green paint, we get black paint. Why?

2007-02-01 21:45:29 · 8 answers · asked by Jack 2

We know that electric field can be written as a NEGATIVE gradient of a scalar potential.....why is that NEGATIVE there, what is it physical significance.

2007-02-01 21:16:14 · 5 answers · asked by preity 1

Its 70g of water if that helps

2007-02-01 21:00:55 · 3 answers · asked by Anonymous

Can any 1 tell me about a material which can survive from temparature upto 1000degree centigrade?? I need a container which takes the temparature upto 1000 degrees centigrade.Plz help me

Also tell me that where can i find this container in Hyderabad/India.

2007-02-01 20:57:34 · 3 answers · asked by Anonymous

what temperature does air start to fall at? when its hot it rises, so how cold does it need to get before falling?

2007-02-01 18:50:52 · 5 answers · asked by joshua 2

air bags. suppose you want to design an air bag system that can protcet the driver in the head- collision at a speed of 100 km/h (60 m/hr) Estimate how fast the driver bag must inflate to effectively protect the driver. how does the use of a seat belt help the driver.

PLEASE EXPLAIN IT.

2007-02-01 18:43:32 · 4 answers · asked by Anonymous

can it go to outer space?

2007-02-01 18:41:57 · 10 answers · asked by gabz 1

a) What equal poistive charges would have to be placed on the earth and on the moon to neutralize their gravitational attraction?
b) Why don't you need to know the lunar distance to solve this problem? c) How many kilograms of hydrogen ions (protons) would be needed to provide the positive charge calculated in a)?


Thanks for any help :-) !!

2007-02-01 18:34:32 · 3 answers · asked by Make a wish 1

And that's in cold water! And also, when you put say two ice cubes together in water, why do they stick together?

hope this wasn't a dumb question...=)

2007-02-01 18:07:34 · 4 answers · asked by -♦One-♦-Love♦- 7

2007-02-01 17:55:04 · 5 answers · asked by hotcandysmacker 2

2007-02-01 17:40:03 · 7 answers · asked by Jacob 1