Science & Mathematics - 28 August 2006

Why isn't it white?

2006-08-28 18:21:33 · 16 answers · asked by lifhapnz 3 in Astronomy & Space

Or do they just have very dark brown eyes?

2006-08-28 18:17:48 · 9 answers · asked by Me 2 in Biology

If 20 souvenirs are to be divided among 4 candidates with each getting at least three, I think the answer is the coeff. of x^20 in the expansion of (x^3+x^4+......+x^20)^4. What will be the answer if the constraint of minimum souvenirs is removed? Please explain how this bracket is arrived? Please also give some more such examples. I think one of these is: in how many ways one can get m marks in aggregate if there are x papers of n marks each.

2006-08-28 18:16:44 · 2 answers · asked by Amit K 2 in Mathematics

2006-08-28 18:07:31 · 6 answers · asked by shahrokh 1 in Other - Science

2006-08-28 17:59:40 · 14 answers · asked by BEERBELLY 3 in Weather

is it true that right now(28) i can see mars, or was it just on the 27th?

2006-08-28 17:54:40 · 8 answers · asked by Lauren 2 in Astronomy & Space

2006-08-28 17:52:38 · 15 answers · asked by treisigbob 3 in Weather

2006-08-28 17:47:32 · 3 answers · asked by viper7721 1 in Other - Science

That's the question and it's worth 15% of my Industry Tech. final grade. Im clueless. Maybe, The speed of dark???? or how about the mind but then again the mind is an unmeasureable source for speed. I don't know, but if you do I would love to hear from ya. Thanks

2006-08-28 17:47:22 · 26 answers · asked by TNTBlasdel 1 in Physics

2006-08-28 17:43:21 · 3 answers · asked by Anonymous in Mathematics

2006-08-28 17:42:49 · 26 answers · asked by Anonymous in Geography

ABCD is a quadrilateral with AB = 2,BC = 2,angle(ABC) = 104 and angle(ADC)=132.Find the length of BD.

2006-08-28 17:38:08 · 6 answers · asked by Rohit C 3 in Mathematics

2006-08-28 17:36:53 · 14 answers · asked by glacier 4 in Zoology

I know there is true north and magnetic north but whats the difference. Are ther any other norths?

2006-08-28 17:35:38 · 9 answers · asked by KSJTam 3 in Geography

use mathematical functions

2006-08-28 17:32:59 · 8 answers · asked by praz 2 in Mathematics

Simplest layman language if possible

2006-08-28 17:24:48 · 2 answers · asked by widz 1 in Engineering

My telescope is the Galileo FS-80, it's four years old and I just Started to use it during a meteor shower. I would appreciate it if you could help me. Thankyou.

2006-08-28 17:22:24 · 10 answers · asked by gabi 2 in Astronomy & Space

;-)

2006-08-28 17:19:25 · 12 answers · asked by Anonymous in Zoology

It seems to me that hot water has to lose heat until it reaches 32F (0 Celsius) before it begins to freeze. The only logical explanation I can think of is if two identical metal ice cube trays were filled with hot water in one and cold water in the other and placed in a freezer that had a layer of frost on top of the coils the tray with hot water would melt the frost and the metal tray would get better surface contact with the coils while the tray with cold water would sit on top of the frost which would be like an insulator. Any comments?

2006-08-28 17:19:02 · 10 answers · asked by ballard770 2 in Physics

2006-08-28 17:16:51 · 7 answers · asked by The One 3 in Other - Science

On some small electronic applicances, it says "120/240V", what does that mean and how is it different than th "120V" ones?

2006-08-28 17:15:42 · 7 answers · asked by beebee32002 2 in Physics

hi.. in the topic of our class on chinese remainder theorem, please help me:
find x the least integers for simultaneous conguence x congruence 2(mod3); x congruence 3(mod4); x congruence 4(mod5); x congruence 5 (mod 6)

thank you

2006-08-28 17:15:00 · 1 answers · asked by toolbox_x 2 in Mathematics

2006-08-28 17:12:52 · 11 answers · asked by nomad69 1 in Mathematics

2006-08-28 17:12:45 · 6 answers · asked by treisigbob 3 in Mathematics

What is the answer to 4/V = V-6/V-4? I am suppose to solve using the Quadratic Formula, but I have no idea how to do this...

2006-08-28 17:03:09 · 7 answers · asked by arunforce 3 in Mathematics

We are forced by gravity on earth, without it we would be floating.
Earth is not floating, it has a systemic movement so do all other planets including the sun. WHAT CARRIES EARTH?

2006-08-28 17:02:28 · 16 answers · asked by Anonymous in Astronomy & Space

2006-08-28 16:58:28 · 13 answers · asked by voodoo m 1 in Other - Science

I got freaked out whenver the idea comes to my mind . There will be great discoveries in next 20 years time - I'll watch them but can't avail . Before my life expires - I'll know that Humans can travel to places several light years away , can't see it actually happened. Perhaps knowing is good for those who can utlise the knowledge !

2006-08-28 16:56:27 · 11 answers · asked by Salekin S 1 in Astronomy & Space

I'm working on a physics problem, which seems to be a "changing y" problem. However, it feels like something is missing from the question...can someone point it out to me? Here's the original question:

"When Babe Ruth hit a homer over the 12 m high right field fence 100m from home plate, roughly what was the minimum speed of the ball when it left the bat? Asume the ball was hit 1.0 m above the ground and its path initially made a 40 degree angle with the ground."

IF this was a changing Y problem, I would assume: Dy = 11m, Dx = 100m, Initial Vx = Initial V[(cos400], Initial Vy = Initial V[(sin400], a = -9.8 m/s^2.

Is there something I'm just missing? Please help!

2006-08-28 16:53:27 · 9 answers · asked by Moosehead 2 in Physics

I make my daily cups of tea in a microwave oven. Heat water for 2 and half minutes. Take out the cup. Dip my teabag. Cool a bit, and drink.

Sometimes, even though the water is just 'bubbling' when I take the cup out of the microwave oven, the minute I dip in my teabag, the water bubbles up furiously, even overflowing the cup last night.

Why does this happen? Is there an agitation of water molecules by the microwave radiation that gets aggravated (or resonates) when tea bags are dipped in?

Or is it because of air pockets within the tea bag itself that are released and heated to steam and released?

Or is there another explanation?

Thanks for your time in helping me explain this curious phenomenon.

2006-08-28 16:52:08 · 4 answers · asked by Time Management Tao 1 in Physics