Science & Mathematics - 26 December 2006

A 6-foot-diameter disk and an 18-foot-diameter disk sit side by side as shown in the figure below. Determine the shortest length of rope that will go around both disks.

http://i117.photobucket.com/albums/o77/florpz/2.jpg

Oh and if possible, can someone help me with this as well?

Given a circle O with a diameter of 10 cm and equilateral triangle ABC as shown in the diagram, find the area of the shaded region.

http://i117.photobucket.com/albums/o77/florpz/10.jpg

2006-12-26 10:34:16 · 6 answers · asked by Anonymous in Mathematics

2006-12-26 10:31:50 · 5 answers · asked by Anonymous in Zoology

2006-12-26 10:31:06 · 20 answers · asked by Kitty 1 in Biology

13. When healed, mercury(II) oxide, HgO, decomposes to form mercury and oxygen. Through this reaction, Joseph Priestley demonstrated the existence of oxygen in 1774. Write balanced equation for decomposition of mercury(II) oxide.
14. Methanol, CH3 OH, decomposes to form carbon monoxide, CO, & hydrogen gas, H2. Write balanced equation for this decomposition reaction.

::Write the balanced chemical equation &Identify type of reaction::
15. sulfur + oxygen >>>> sulfur dioxide (g)
16. zinc + sulfuric acid (H2S04) >>>> zinc sulfate (aq) + hydrogen (g)
17. hydrogen + nitrogen >>>> ammonia (g)
18. hydrogen + chlorine >>>> hydrogen chloride (g)
19. carbon + water(steam) >>>> carbon monoxide (g) + hydrogen (g)
20. calcium oxide + water >>>> calcium hydroxide (aq)
21. phosphorus + oxygen >>>> diphosphorus pentoxide (molecular formula, P4O10) (s)
22. hydrochloric acid(HCl) + sodium hydroxide >>>> sodium chloride (aq) + water

2006-12-26 10:23:45 · 4 answers · asked by truckin_90 2 in Chemistry

I have seen people using a screwdriver , but i don't know what they do to it , to check it?

2006-12-26 10:22:21 · 2 answers · asked by 株式会THE CITADEL 株式会 4 in Engineering

2006-12-26 10:21:35 · 5 answers · asked by dopepink 1 in Mathematics

My son is completing his engineering by the end of next year. He wants to study in USA for higher education.My salary in In India is Rs.10,000/= per month. Can I efford to send him abroad?

2006-12-26 10:20:58 · 2 answers · asked by Parvatala R 2 in Engineering

and what will happen to society if we find it to be true?

2006-12-26 10:15:00 · 11 answers · asked by Alex F 3 in Astronomy & Space

OK, so I have a science fair project to do and my teacher requires us to have a CONTROL GROUP. But I really don't know what my control group is.. My project is basically just testing females and males to see which of the gender would find the change in the image faster.
EX. http://www.cs.ubc.ca/~rensink/flicker/download/Sailboats.mov
(the engine thing beneath the airplane's wing is the change)

This 'flickering' image is an example for a visual perception called 'change blindness' (http://en.wikipedia.org/wiki/Change_blindness) so,
My question is: Is change blindness more prevalent (popular) in females or male?
My hypothesis is: If change blindness were presented to males, then the time figuring out the image change would be slower. (which would mean that 'change blindness' is more popular to males)

So what would be my control group? Or do I have to change my question a little bit? (if you right click on the ex. there are options you can adjust. Is that my control?)

2006-12-26 10:13:56 · 5 answers · asked by Anonymous in Biology

2006-12-26 10:13:34 · 6 answers · asked by Kitty 1 in Biology

2006-12-26 10:13:19 · 2 answers · asked by Anonymous in Weather

2006-12-26 10:13:04 · 2 answers · asked by Kitty 1 in Biology

2006-12-26 10:11:24 · 8 answers · asked by Kitty 1 in Biology

2006-12-26 10:08:35 · 3 answers · asked by fez 1 in Botany

I have a solar motor in a glass bulb with 4 solar panels (a gift). I want to read up on how it functions, but I don't know what it is called. Anyone know?

2006-12-26 10:07:27 · 3 answers · asked by gbiaki 2 in Physics

These are the rules:
Linear factors: f(x) / ((x+a)(x+b)) = ((A / (x+a)) + (B / (x+b))
Repeated linear factors: f(x) / (x+a)^2 = ((A / (x+a)) + (B / (x+a)^2)

i know that when we want to solve ex:
(2x+3) / (x-2)^2 we use the repeated linear factors method...

that's ok, but can't we say that:
(2x+3) / (x-2)^2 = (2x+3) / ((x-2)(x-2)) then solve it using the linear factors method ??? if no, plz say why...

Plz help me because i need a very clear answer

Thanx

2006-12-26 10:07:03 · 5 answers · asked by abboud_123 2 in Mathematics

2006-12-26 10:04:07 · 7 answers · asked by Anonymous in Physics

It came up in a convesation a few friends I were having. we mentioned the Discovery channel and how on a show they were decoding the bible. They mentioned how Los Angeles would have a huge earhquake in 5/2012. Just curious to see if any one know if California would be going under water...

2006-12-26 10:00:36 · 6 answers · asked by S L 1 in Earth Sciences & Geology

2006-12-26 09:58:03 · 5 answers · asked by Anonymous in Mathematics

2006-12-26 09:55:03 · 6 answers · asked by Anonymous in Mathematics

not just the answer i mean explain the whole process and everything? its only a practice problem but i wanna learn to do it.

(4a-3)(5a+1)

2006-12-26 09:54:21 · 8 answers · asked by juniorm915 2 in Mathematics

then explain what is happening in each step of the sequence

2006-12-26 09:48:31 · 2 answers · asked by graphicer89 2 in Biology

do you think that robots will conquer us in the future? should we stop making robots?

2006-12-26 09:47:37 · 3 answers · asked by hockey fan 3 in Engineering

Or is it impossible right now to account for all the variables?

2006-12-26 09:47:21 · 20 answers · asked by Anonymous in Mathematics

are you working on or going to improve what are some of your ideas small or large mine is a sphereical vaccume that just rolls around on the floor useing all it's sides to vaccume

2006-12-26 09:42:25 · 3 answers · asked by Talking Hat 6 in Engineering

Can I just multiply by -1 or is it a negative reciprocal?
Whats the gradient of a line perpendicular to a line with gradient -3/2?

2006-12-26 09:40:51 · 5 answers · asked by Anonymus 2 in Mathematics

enlarged spider glands, microscopic sticy spikes on knees, elbows, hands, back, and feet, phycic awarness, enhancd streanth and speed. is all this possible?

2006-12-26 09:37:29 · 14 answers · asked by Anonymous in Physics

HELP

2006-12-26 09:33:40 · 5 answers · asked by C_ster 1 in Biology

2006-12-26 09:31:54 · 5 answers · asked by Anonymous in Medicine

what happens if i boil it on the oven since it really flamable but i have to boil it for a project im doing what sould i do



science&mathematics

2006-12-26 09:23:14 · 5 answers · asked by ♫ 2 in Chemistry