Science & Mathematics - 1 August 2006

If you place a torch (flashlight, bulb-battery) on a mirror, so the beam is reflected straight back to the bulb, with no gaps between the two where the light can get out, where does the light go (without turning the torch off) ?

2006-08-01 10:56:35 · 15 answers · asked by Timbo 3 in Physics

Because of the shortage of nurses or because it has bad administration?

2006-08-01 10:54:12 · 3 answers · asked by Anonymous in Medicine

2006-08-01 10:50:26 · 2 answers · asked by cold.taint 2 in Mathematics

Conditions where there is more pressure and oxygen.

2006-08-01 10:50:21 · 4 answers · asked by massimo_autorita 1 in Biology

2006-08-01 10:46:06 · 26 answers · asked by machan 1 in Physics

2006-08-01 10:43:11 · 1 answers · asked by icethey 2 in Chemistry

2006-08-01 10:42:28 · 1 answers · asked by icethey 2 in Chemistry

2006-08-01 10:39:22 · 3 answers · asked by mommy_2_little_man 2 in Other - Science

In your answer please put your age, that would help a ton! Thanks!
~Violet~

2006-08-01 10:32:49 · 12 answers · asked by Anonymous in Physics

Even if the plane is the same the time difference in the two trips is appreiciable ( about 1 to 2 hrs). On what factors does it depend? This is found to be the case for practically all airlines .. going over pacific .

2006-08-01 10:31:54 · 5 answers · asked by gnparvate 2 in Other - Science

2006-08-01 10:30:18 · 16 answers · asked by Anonymous in Astronomy & Space

And has anyone taken a picture of one?

2006-08-01 10:23:20 · 7 answers · asked by bo nidle 4 in Earth Sciences & Geology

2006-08-01 10:22:54 · 16 answers · asked by cooper l 2 in Other - Science

2006-08-01 10:20:03 · 5 answers · asked by emmett t 1 in Mathematics

2006-08-01 10:19:52 · 31 answers · asked by itsme 3 in Other - Science

compared to a grain of salt or something common.

2006-08-01 10:18:38 · 4 answers · asked by Anonymous in Physics

I have been thinking about this problem for a long time. It is more than often said that eye sight is perhaps the most important sense of human beings. However, it is a very high percentage of people who need glasses and would have a hard time without them.

Why is myopia so extremely common? One could think that such important sense as eye sight would have evolved perfectly but it hasn't.

I also heard of a documentary that suggested that "modern eyes" don't get enough practice in today's environment. Thus, people suffering of myopia should, according to the documentary, wear in fact convex ("plus") lenses to train the eye.

I would love to know why so many people need eye glasses. And please feel free to post any relevant links on the topic. Thanks so much in advance!

2006-08-01 10:15:43 · 1 answers · asked by Anonymous in Medicine

An economist is interested in how the price of a certain item affects its sales. At a price of $, p, a quantity, q of the item is sold.

If q = f(p), explain the meaning of each of the following statements

f(200) = 2200

f ' (175) = -12.5

2006-08-01 10:12:20 · 4 answers · asked by ne0aes0p 2 in Mathematics

I haven't taken Algebra for a few years, and I've already forgot how to do this type of equation.
Given 3n * n = 32
Which is correct? 4n = 32 OR 3n^2 = 32

2006-08-01 10:10:43 · 14 answers · asked by ashcatash 5 in Mathematics

2006-08-01 10:06:58 · 6 answers · asked by Michael M 6 in Weather

The record of heat was broken yesturday, July 31, yesturday at 100 degrees Farenheit in Chicago. It has to be connected to Global Warming, doesn't it?

2006-08-01 10:00:08 · 59 answers · asked by Lydia 2 in Weather

2006-08-01 09:59:32 · 13 answers · asked by Gingerbread Man 3 in Biology

Mine is a gorgeous white tiger that they have in Colchester Zoo.

2006-08-01 09:58:54 · 21 answers · asked by ? 1 in Zoology

i see them always at night,and they don't seem to like the light

2006-08-01 09:58:21 · 3 answers · asked by Anonymous in Biology

2006-08-01 09:57:19 · 10 answers · asked by Mr. Knowledgeable VI 7 in Geography

2006-08-01 09:54:16 · 7 answers · asked by great6181930 3 in Earth Sciences & Geology

I want to make a small heating element, using resistance wire and a battery. The point is that I need a small hot rectangular surface (only about 1cm x 2cm).
I was thinking of using a small copper plate (for its high thermal conductivity) and "zig zagging" some NiCr wire along one side of it (so that the other side will be the hot flat surface I need), but the problem is that that will short the circuit since the resistance wire is not insulated. I've been looking for coated resistance wire but I cannot seem to find anything like that.

I need the temperature to be fairly high so I doubt I can use tape to insulate the plate. Maybe I could use another material but I can't think of anything (a ceramic plate could handle the temperature but its thermal conductivity is bad and I wouldn't know where to get it)

so If you have any suggestions on this, just shout

2006-08-01 09:53:44 · 9 answers · asked by III 3 in Engineering

what does this protein do?

2006-08-01 09:53:15 · 2 answers · asked by Philip C 2 in Biology

A pair of consecutive integers has the property that 7 times the smaller is less than 6 times the greater. What Are the greatest such integers?
If you could tell me how u got your answers i would appreciate it as i have a test on it tomorrow and do not understand it.

2006-08-01 09:50:27 · 8 answers · asked by nicluvswings 3 in Mathematics

2006-08-01 09:48:10 · 9 answers · asked by ka5flm 2 in Mathematics