Physics - October 2006

A little confused here....
Could anyone explain, the relationship between the ability of one body (non-black) to absorve heat that is emitted by another body (non-black) and the spectrum of the emitted energy.
To make it more clear :
- one body emitts heat at a specific spectrum (at certain wavelengths) depending on the surface temperature. Can this spectrum be shifted or concetrated in a small band at a specific wavelength value?
- the ability of another body to absorb energy, can be characterised by specific wavelength ? E.g. is it correct to say, that a specific body absorbs (the most) at a specific wavelengh?

Thanks in advance.

2006-10-02 07:19:53 · 3 answers · asked by Aiadas 1

2006-10-02 06:47:05 · 3 answers · asked by nube 3

Does the force of the throw affect an eggs splatter?
need information or websites for research

2006-10-02 06:39:22 · 4 answers · asked by look at that smexy piggy 1

2006-10-02 06:14:47 · 3 answers · asked by brendan h 2

2006-10-02 05:40:28 · 2 answers · asked by ddesitta 1

like vaccum energy

2006-10-02 05:15:26 · 11 answers · asked by murugasu k 2

what is the AVERAGE ACCELERATION of the sprinter and HOW LONG does it take him to reach that speed???

please and thank you for your help!! my friends and i have been trying to figure out this problem, we're wondering if you guys can help us. thnx again!

2006-10-02 05:13:25 · 2 answers · asked by Anonymous

I feel the metal bucket is less weight in water than in the air , why? Will the object's weight will differ in Oil when compared to water?

2006-10-02 05:12:57 · 43 answers · asked by Ken 1

2006-10-02 05:07:12 · 5 answers · asked by Ray H 7

I need help on this:
The Laplace equation for electrostatics is 2V=0. This is easily solved for simple cases such as the parallel plate capacitor. For more involved situations, numerical methods are usually required. To give you some insight into numerical solutions, lets use a spreadsheet (such as Excel) to solve the Laplace equation in cartesian coordinates.

For the voltage, Vi at the point xi, a simple approximation for the derivative is

and the second derivative is obtained from the first as

(i) Take the case of a parallel plate capacitor with 5V across it. Set up a spreadsheet to solve for the voltage from the grounded plate to the 5V plate. Plot V versus x to ensure the solution is correct.

(ii) Extending this to 2 dimensions (x,y) and setting Δx=Δy=h then

Using the spreadsheet, compute the voltage inside a long conducting box (in the z direction) with square cross section (in the x-y plane) that has one side at 5V and the rest at zero volts.

2006-10-02 04:41:17 · 1 answers · asked by bye_1981 1

I dont even know what kinda satellite this is!

2006-10-02 04:30:40 · 8 answers · asked by wildbutterflychick 2

This is a serious question,, what acutually happens to the photons?

2006-10-02 04:24:01 · 3 answers · asked by landerscott 4

2006-10-02 03:51:38 · 4 answers · asked by poovarasi l 2

At the moment, we need lots of power to fly - to break the earths gravitational pull. Do you think that one day in the near future, someone will invent a "gravity shield" making flying possible with virtually no energy transfer?

2006-10-02 03:29:13 · 19 answers · asked by Charlie Brigante 4

2006-10-02 03:03:41 · 8 answers · asked by antony j 1

how was the idea of black hole conceived? give me also the website as your resource.

2006-10-02 02:44:39 · 6 answers · asked by gReEn_p!LLoWs 2

I work with paint application, and having issues with prep coat (adhesion promoter). One product reads 250k and the other reads 1.2m. Is there a big difference between the readings?? By looking it up online, it appears that the difference is huge the lower you go. For instance, the difference between 15mOhm and 4mOhm is not as big a difference as 4mOhm to 250kOhm. Also, does this make a difference on the distance the current will have to travel?? Is 250k better than 4m to go a distance of 24"? Does the lower # act as a better gage wire for instance?

2006-10-02 02:43:38 · 5 answers · asked by ? 4

2006-10-02 02:42:28 · 7 answers · asked by joe 4

2006-10-02 02:35:41 · 12 answers · asked by Arasan 7

2006-10-02 01:53:50 · 15 answers · asked by idkipper 2

2006-10-02 01:39:12 · 10 answers · asked by nikki d 1

If you have a 10 kΩ resistor that is rated to withstand a maximum power of 4 W. If you connect this resistor within a DC circuit, what is the highest voltage that can be safely applied across this resistor, and what is the corresponding maximum current that can flow through the resistor?

2006-10-02 01:29:45 · 5 answers · asked by Anonymous

2006-10-02 00:32:33 · 7 answers · asked by Anonymous

2006-10-02 00:08:35 · 10 answers · asked by Jabelu Firoz 2

I was thinking there's probably an effect similar and opposite to the effect of a hot air balloon rising until it is the same density as the air... In a really deep bit of ocean a ship might just end up floating about - whaddaya think? Probably deeper than anything we've got, hey?

2006-10-01 22:45:28 · 12 answers · asked by Alyosha 4

Assuming that instantaneous teleportation exsisted. If you could teleport from one side of the universe to the other, would the time thing apply? When you returned, would everything have aged?

2006-10-01 22:41:44 · 11 answers · asked by David F 1

Its being heldind a science fair in my college next month.But i didnt have a project ready.plz help me by sending a project and mention how would i build it.plz send me a good project that should help me to win.It will be better if it is a computer project

2006-10-01 22:05:38 · 3 answers · asked by r97_06 2

i want a proper detailed answer.

2006-10-01 21:50:01 · 3 answers · asked by Ashi 1

2006-10-01 21:49:38 · 17 answers · asked by neha 2

If I use a gun to shoot a bullent straight up (at 90 degrees) in the air, the bullent is going to leave the gun at a certain speed. So the question is: Is the speed of the bullet falling down the same as the speed of the bullet leaving the gun? (Is the answer the same if we don't consider the air friction?)

2006-10-01 21:44:34 · 20 answers · asked by Silver_Sword 3