Science & Mathematics - 28 September 2007

2007-09-28 08:41:06 · 8 answers · asked by Caramel 2 in Chemistry

Last night my boyfriend were in the bedroom, the bedroom over head light was off, the switch also have a dimmer on the side of the switch to adjust how bright the light is. The switch was on, [OFF] position which is the switch down. Maybe an hour later, Thunder hit and then the bedroom lights came on really bright like when the dimmer is all the way up [when the switch was off], then dimmed back down the to lowest setting. I got freaked out and got up and checked the switch which was ...on, [ON] position when neither of us even touched it.

SO, can someone explain to me how a switch can turn it self upright when it was in down position OFF! without someone touching it???!

2007-09-28 08:40:22 · 4 answers · asked by Gabri3ll3 1 in Physics

on the Global Corruption Index, a survey of 133 nations conducted by Transparency International (an anti-graft watchdog). A score of 10 means a country is seen as being 'highly clean', and a score of zero means 'highly corrupt.'

How come more secular European countries are less corrupt than the USA?

The least corrupt country in the world was Finland, a very secular, Scandanvian country. Finland scored 9.7 out of 10. Bangladesh is the world's most corrupt nation with a score of 1.3.

Poor countries with political unrest are typically more corrupt. Here is where the USA ranked among the rich Western nations.

Finland- 9.7
Iceland- 9.6- Denmark
New Zealand- 9.5
Singapore- 9.4
Sweden- 9.3
Netherlands- 8.9
Australia- 8.8
Norway- 8.8
Switzerland- 8.8
Canada- 8.7
Luxembourg-8.7
United Kingdom- 8.7
Austria- 8.0
Hong Kong- 8.0
Germany- 7.7
Belgium- 7.6
Ireland- 7.5
USA- 7.5
Chile- 7.4

What do you think?

2007-09-28 08:39:03 · 12 answers · asked by pixie_pagan 4 in Geography

I need an answer for my science H/W!!!
I need to know if it is good to use Pesticides on plants/crops etc. which people are going to eat.
Thanks!!!

2007-09-28 08:38:30 · 4 answers · asked by me_94_me 2 in Biology

Suppose you do a GC analysis on a sample consisting of 15% A, 60% B, and 25% C by weight. A and B are volatile and have different retention times but C is nonvolatile under the conditions used and therefore does not generate a peak on the chromatogram. Assuming that you do not know that there is nonvolatile material in the sample, what will you conclude from the GC analysis,ie.,what percent of A and B would you calculate?

2007-09-28 08:35:31 · 2 answers · asked by Anonymous in Chemistry

please hurry

2007-09-28 08:34:19 · 4 answers · asked by Anonymous in Mathematics

Hi, I have a houseplant (Chamaedorea elegans) with leaves that are fading badly - not going yellow, just fading away to a pale whitish colour. The leaves affected are most pale on the inside, and the tips maintain some green colour. This has come on quite suddenly. The plant is quite bushy still, the leaves aren't turning brown or dropping off.

If you need any more info please ask!

2007-09-28 08:34:03 · 6 answers · asked by Ed 1 in Botany

2007-09-28 08:27:50 · 7 answers · asked by J Lo 1 in Mathematics

2007-09-28 08:27:24 · 4 answers · asked by Carson C 2 in Zoology

I used to get bitten regularly when I was a little kid, but one summer they just stopped. Why? My biology teacher has no idea.

2007-09-28 08:26:59 · 15 answers · asked by Anonymous in Zoology

Suppose a Chinook salmon needs to jump a waterfall that is 1.50 m high. If the fish starts from a distance 1.02 m from the base of the ledge over which the waterfall flows, find the x- and y-components of the initial velocity the salmon would need to just reach the ledge at the top of its trajectory.
v0x =______ m/s
v0y =______ m/s

2007-09-28 08:23:08 · 1 answers · asked by P. Hysics 1 in Physics

well i have an test and needto know what it is in definations i can understand and rember

2007-09-28 08:18:05 · 4 answers · asked by Anonymous in Astronomy & Space

2007-09-28 08:17:29 · 26 answers · asked by quick2send 3 in Astronomy & Space

2007-09-28 08:17:22 · 3 answers · asked by amlippie 1 in Chemistry

2007-09-28 08:13:36 · 14 answers · asked by Anonymous in Astronomy & Space

Just a fun thing to see who can answer it first correctly...

5(x+2)+6(5+x)=50

2007-09-28 08:13:02 · 10 answers · asked by Apolx 1 in Mathematics

2007-09-28 08:11:40 · 4 answers · asked by Alexander 6 in Physics

x^2+2, x≤1
x+2, x>1

is continuous but not differentiable @ x=1

please explain problem & graph

2007-09-28 08:11:19 · 3 answers · asked by Deutschjoe 3 in Mathematics

do you believe in it or not?
and why do you or dont you?

2007-09-28 08:06:43 · 12 answers · asked by cheerluver2011 1 in Biology

Time dimension properties
Trying to imagine that there’s a dimension which is elastic & moving with a certain unknown velcoity so u can feel its changes according to your high velocity imagine that balloon which is moving velocity taking it’s shape of your moving with as your moving through it & it can be rewind again to take all the shapes u made as an evidence for what u did, this is my opinion for time as a body,(EX: try to get any elastic thing & try to move your finger through it then start to return it back again u will notice that the elastic body will take all the shapes u did )
But the question is why if you are standing beside a rock for 100 year you will die while rock won’t effect (neglecting external effect like pressure & temperature)?(1st question)
May be because we r such complicated machine with some chemical reaction which destroy it self by it self
I think that time is only an evidence for what we did & its end is rewinding again like an elastic uncut able balloon to regain again to its beginning point, like an elastic point u start to stretch it from all direction till it became unable to be bigger so it start to regain its original shape a point & all things happened can be regain again, that’s my opinion about time as a body dimension but what if it’s an energy?(2nd question) , I think if time dimension is an unknown energy when its energy lost it starts to regain its shape again but may be faster or slower or same speed ,but its speed is too high as u need huge speed to feel the time changes in your frame relative to other ,but does time dimension has a relation with mass ??(3rd question) ,i mean what is created before other time or mass & does mass affects time dimension ??

2007-09-28 08:06:26 · 3 answers · asked by sherif m 1 in Physics

I need some good websites that are informative and perhaps slighlty opinionated. They CANNOT be .com websites. This if for a research paper so only:
.org
.net
.gov
etc.

are accepted. They will be cited in the bibliography so it will be known which site the information was attained from. I have searched Google and tried a variety of search engines for educaitonal purposes but perhaps I wasn't searching correctly. Any info will be greatlty appreciated. Thank You!!!!

Also, I have to have an interview of someone's opinion on ghosts. I would prefer to interview someone who has had experience with the paranormal, someone who is knowledgable of the paranormal, or someone who DOES BELIEVE in ghosts. It will be an e-mail interview so anyone who wished to participate may notify me by e-mail. My web address is on my profile and please be sure to enter age and a brief summary of your experience. Again, thank you!

2007-09-28 08:03:17 · 8 answers · asked by Shelly 3 in Paranormal Phenomena

2007-09-28 07:56:39 · 20 answers · asked by Anonymous in Engineering

This isnt entirely a physics question, but i couldnt think of a better place to put it.
One of the natural consequences of believing in God or the Creator of the universe is that the world is determined to at least some extent. How then do random events fit into this framework? are they still random and "out of Gods control"? or do they just look random to us? Examples of random events: atomic decay of a single atom, localization of particles from a waveform, and single shot measurements on probablility distributions of all sorts.


will choose best answer

2007-09-28 07:55:02 · 4 answers · asked by nacsez 6 in Physics

a.207.27
b.2027.27
c.2073.72
d.2072.73

2007-09-28 07:50:07 · 10 answers · asked by Anthony G 1 in Mathematics

2007-09-28 07:46:06 · 3 answers · asked by Anonymous in Mathematics

2007-09-28 07:38:36 · 8 answers · asked by Maxi Robespierre 5 in Astronomy & Space

Today I was surfing around some of the Mars sites and doing some research because Mars facinates the heck out of me. Today I watched a short movie on youtube about the discovery of what appears to be bones. I have included a link to this picture so everyone can have a look. Tell me what you think.

To me it looks like the skull from that creature in the movie Preditor. LOL
This is getting exciting!!!!

Picture
http://marsrover.nasa.gov/gallery/all/2/p/513/2P171912249EFFAAL4P2425R1M1.JPG

YouTube Video
http://www.youtube.com/watch?v=5u-20g7Bwdw

Maybe someone can take the picture and examine it. I do not have the software to make high quality close ups.

2007-09-28 07:37:56 · 7 answers · asked by Anonymous in Astronomy & Space

I get a fly-swatter.

2007-09-28 07:33:53 · 7 answers · asked by Anonymous in Zoology

2007-09-28 07:33:30 · 8 answers · asked by thary h 1 in Astronomy & Space

Please, look at this question:
http://answers.yahoo.com/question/index?qid=20070928100815AA2qN2R

Now:
A sealed horizontal pipe on wheels, contants low-viscosity liquid and a a small bublle in the middle. Both liquid and the bubble are initially at rest with respect to the pipe.
http://i21.tinypic.com/352g4fd.jpg

The pipe rolls on wheels on level floor, and bounces off the wall. The spring attached to the end provides elastic bouncing.

What will happen to the bubble?

2007-09-28 07:32:04 · 3 answers · asked by Alexander 6 in Physics