Science & Mathematics - 4 November 2006

After i've been in the shower a bit red dots appeared on my hand and down my wrist a little bit, they have never appeared there before as far as I remember, and the water temperature wasn't very hot, the dots have went now, i'm just wondering what they are, there was about as many dots as a spotted plec.. like this http://www.aqualandpetsplus.com/Catfis330.jpg maybe a little bit less, but not much, the dots almost looked like small moles but they were slightly redish coloured.

2006-11-04 01:12:23 · 5 answers · asked by Aaron 5 in Biology

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name a point inside a lens through which a ray of light goes undeviated?

1) name a point inside a lens through which a ray of light goes undeviated
2) a 1 cm high object is placed at a dist. of 2f from a convex lens. What is the height of the image formed.
3) A convex lens_____ a parallel beam of light while concave lens _____ a parallel beam of light.
4) give one condition when there is no refraction of light even when it passes from one medium to another.
5) name the muscle which controls the focal length of the eye lens.

2006-11-04 01:11:46 · 6 answers · asked by rmaakan 4 in Physics

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If the human population diminished rapidly, would we have to clone ourselves?

2006-11-04 01:11:04 · 13 answers · asked by Anonymous in Biology

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A conceptual question on sound!?

My question is what happens to the quality of sound when its frequency is increased. Audible range is between 20Hz-20000Hz. But why 21000Hz is not audible.

2006-11-04 01:10:54 · 6 answers · asked by anurag 1 in Physics

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Can anyone tell me anything about the changing government approaches to urban regeneration?

Preferably in the last 40 or so years, but anything would be great. Thanks.

2006-11-04 01:08:53 · 2 answers · asked by Anonymous in Geography

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How is Planet Earth able to regenerate itself even after a devastating event?

Look at the dinosaurs. Many creatures perished when a meteorite struck, but new animals developed out of the blue and populated the earth. The same thing will probably happen when humans bite the big one also

2006-11-04 01:08:41 · 5 answers · asked by Anonymous in Earth Sciences & Geology

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How do you talk with aliens through your head?

2006-11-04 01:07:00 · 5 answers · asked by UFO guy 1 in Astronomy & Space

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does anyone know how much rough opals are worth?

2006-11-04 01:00:38 · 4 answers · asked by wyld_aussie_girl 1 in Earth Sciences & Geology

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could you suggest some medicinal plants?

i also need the specimens of them. it is actually a class project.

2006-11-04 00:57:14 · 18 answers · asked by isha 1 in Botany

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how to solve lg 15 divide by lg 17 without a calculator?

the answer must be in decimal or fraction

2006-11-04 00:52:16 · 4 answers · asked by know more 1 in Mathematics

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How do you reach this end?

The unfound are lost. The unknown does not exist.

2006-11-04 00:51:16 · 6 answers · asked by Anonymous in Astronomy & Space

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what is the shape of sf4 (including bond angles)?

2006-11-04 00:50:35 · 8 answers · asked by 2112 1 in Chemistry

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any mathematician who has had something to do with probability??? it is really urgent.?

2006-11-04 00:47:56 · 5 answers · asked by Anonymous in Mathematics

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Was mammoths really bigger than the biggest elephant species today?

j/w b/c on the internet some people say yes, the others no....so which one is it!!???

2006-11-04 00:45:22 · 8 answers · asked by Anonymous in Zoology

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How do you get Pi?

What are two numbers do i divide to get pi? Or the formula or whatever. I want to challenge my teacher to a pi off on march 14th. I need to know how to get over 50 numbers to beat him.

2006-11-04 00:39:59 · 13 answers · asked by Emily 2 in Mathematics

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Why don't we travel to the moon, planets, or stars?

The private sector has not been able to achieve this feat. Their boldest accomplishment was spaceshipone which only dipped into the cosmic sea. Our ancestors braved the oceans for months at a time to reach the new world. How come we can't make the journey to the other heavenly bodies? Have we lost the frontier or pioneering spirit?

2006-11-04 00:38:19 · 14 answers · asked by timespiral 4 in Astronomy & Space

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Is there apossibility that its Space-time that curves the mass and the effects are mutual?

General relativity

2006-11-04 00:38:18 · 5 answers · asked by goring 6 in Physics

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Can you solve this problem?

A crate of mass 11.5 kg is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 100 N parallet to the incline, which makes an angle of 21 degrees with the horizontal. The coefficient of kinetic friction is .4, and the crate is pulled 4.05 m.

I've tried to find the amt of mechanical energy lost due to friction using {change in kinetic + change in potential = change in thermal), but my answer is not coming out correctly. Any suggestions?

2006-11-04 00:37:28 · 2 answers · asked by krisski 3 in Physics

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What is the chemical used in making money?

2006-11-04 00:36:33 · 2 answers · asked by Tegus 1 in Chemistry

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UFO questions?

Im a UFOlogist in training and have some questions about UFOs. If anyones actually seen one ore have been abducted by an alien, please answer.

Where are the best places in the USA (Illinois if there is any please) to spot a UFO?

What's the best way to talk to aliens through your head? How do you talk to aliens through your head?

Whats the best way to spot a UFO?

Is there any way to talk to GOOD not bad aliens? Im trying to make contact with aliens.

Please answer

2006-11-04 00:33:41 · 10 answers · asked by UFO guy 1 in Astronomy & Space

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