Science & Mathematics - 24 October 2007

Can you explain to me if you have 4 light bulbs with ratings 60W, 75W, 100W and 120W in series, connected to a 120V battery, which light bulb will shine the brightest, and why.

THANK YOU SO MUCH IN ADVANCE!

Question from Physics 2.

2007-10-24 19:34:46 · 7 answers · asked by stackinchips11 2 in Engineering

Q: What mass of solid aluminum hydroxide can be produced when 50.0mL of 0.200 Molarity Al(NO3)3 is added to 200.0 mL of 0.100 Molarity KOH?

A: Please tell me step by step. VERY specific

2007-10-24 19:19:43 · 1 answers · asked by Anonymous in Other - Science

and suppose we enlight these points by being more concious to the one truth? and this is our way to go with the speed of light? do you think this is very far from the truth?

2007-10-24 19:17:32 · 7 answers · asked by quasar 2 in Astronomy & Space

The total cost (in dollars) of producing x coffee machines is

C(x)=2500+60x-0.4x^2

(A)Find the exact cost of producing the 21st machine.
Exact cost of 21st machine =

(B)Use marginal cost to approximate the cost of producing the 21st machine.
Approx. cost of 21st machine =

2007-10-24 19:16:04 · 3 answers · asked by RedSparkle 1 in Mathematics

What mass of solid aluminum hydroxide can be produced when 50.0mL of 0.200 Molarity Al(NO3)3 is added to 200.0 mL of 0.100 Molarity KOH?

2007-10-24 19:07:49 · 2 answers · asked by Kennedy 1 in Chemistry

solve for a:
K = ma/F

2007-10-24 19:01:01 · 12 answers · asked by DoWHATiDO 3 in Mathematics

Dear one,

I wish to calculate the power consumption in our home kindly let know how can i do that.

Thanks in advance

2007-10-24 19:00:05 · 1 answers · asked by Raja k 1 in Engineering

Is there a scientific term for the dark outer ring found around some irises?

Sorry if this question is not in the right category; I wasn't sure where to put it.

2007-10-24 18:58:41 · 7 answers · asked by lickitysplit 4 in Biology

its here in yahoo space. or is it

2007-10-24 18:58:22 · 5 answers · asked by Mercury 2010 7 in Astronomy & Space

2007-10-24 18:57:00 · 3 answers · asked by bob s 1 in Biology

I'm doing a report about WHY intelligent design should be TAUGHT IN PUBLIC SCHOOLS.

I personally think that it should be taught because Science is there to DISPROVE theories.
Studying ID would disprove "Evolution".

However, I could care less if you believe in it or not as I am not here to argue whether or not it is true. I'm asking why it should be taught in public schools.

So far I have:
1. Natural Selection vs. Evolution
2. The Time that it took God to create the world
-In the Bible it states that 1 day meant 1,000 years and 1 second of God took x amount of years.

Please help!

Thanks!

2007-10-24 18:54:27 · 13 answers · asked by Tom 2 in Biology

INTRODUCTION

location of bermuda triangle-miami bermuda, puerto rico
Examples of ships lost in bermuda triangle
how flight 19 went down
theories that citizens have proposed
Scientific theories
real explanations in my opinion
CONCLUSION

2007-10-24 18:54:22 · 3 answers · asked by julio b 2 in Astronomy & Space

2007-10-24 18:47:45 · 7 answers · asked by Anonymous in Earth Sciences & Geology

please explain, ty

2007-10-24 18:46:21 · 6 answers · asked by Yvonne 4 in Paranormal Phenomena

Mine has, as well as the DVD player turning on by itself
a couple of times while doing the dishes, I'd think to myself, "okay well, it's time to play a movie"
about 5 feet away from the entertainment center one or the other has turned on by itself.
it happened 3-4 times in less than a yr.
how can this be explained exactly?
[I didn't TOUCH IT!!]
hmmm ....

2007-10-24 18:45:34 · 34 answers · asked by Yvonne 4 in Paranormal Phenomena

If Natural Selection is true, then does that mean that obese people will eventually start to die?

I know this question seems a bit narrow-minded, but if you saw an obese rat, you wouldn't think that it could even last a few weeks out in the wilderness.

If you take away all the factors such as surgery, mobility, etc., will the world be rid of obesity once and for all?

2007-10-24 18:40:29 · 8 answers · asked by Tom 2 in Medicine

2007-10-24 18:35:15 · 4 answers · asked by senorita_otono 2 in Mathematics

I used this rule: d/dx a^x = a^x (ln a).

2007-10-24 18:33:46 · 1 answers · asked by Conservative Jesus 1 in Mathematics

of the water sample?

2007-10-24 18:32:55 · 2 answers · asked by Nikoru Y 1 in Chemistry

Can someone please tell me what kind of spider this is? i found it alive on my living room floor, close to where my son was playing. It is black with (i think ) 8 legs..it is very fat, like the size of a thumb..the legs were very thick as well. It was not shiny at all-almost like a fur look...THIS IS NOT A BLACK WIDOW!!!! I tried to find this online but had no luck. I need to know how to get rid of them and are they poison. I did not see any bite marks on my son, but what signs should I look for? How can I tell if there is just one or a nest?

2007-10-24 18:23:50 · 8 answers · asked by spaced out 3 in Zoology

How Kilo watt apere to be converted in to Kilo watts? for all ( single ph / Two Ph / 3 Ph AC circuites).
Kindly provide equetions.

What is the Value of 1.42 in AC ?

2007-10-24 18:14:12 · 3 answers · asked by Ad_Rains. 1 in Engineering

This is to present a Seminar so detailed answer needed.

2007-10-24 18:10:36 · 3 answers · asked by Anonymous in Engineering

if u had a pot of cold water..would u reach a boil faster than if u started with hot water.all variables being the same.

2007-10-24 18:08:05 · 2 answers · asked by bob t 1 in Chemistry

if all energy never dies but transforms and ghost are energy, or risdual energy , time waves whatever you want to call them

why is it we never hear or see ghost from more that 2-3 hundred years ago

certainly people had ghost sightings in acient times why don't we see or hear or ancient haunting....

IE
human in year 1700 dies , human becomes ghost or whatever due to never ending energy, time warp..actual haunting
now
ancient Roman dies , but no modern day ghost sighting

does energy of this sort continue to transfrom, and if so does it mean in a few hundred years ghost sighting that seem to be from victorian times will be gone.

2007-10-24 18:06:07 · 3 answers · asked by la de da 3 in Physics

Like 'some' walk backwards, or some may float backwards and some EVP researchers have to figure out messages which are reversed, WHY?
why do spirits do things backwards?
any other secrets we should know about?
ty

2007-10-24 18:05:10 · 13 answers · asked by Yvonne 4 in Paranormal Phenomena

A student was assigned a long division homework which he was able to correctly work out. Unfortunately the dog ate his homework, and all that was left was what you see below. All the digits were smudged except for an '8'. Help the student to reconstruct his homework.

Each x stands for a digit (not necessarily unique). The dots are only to make the digits line up.

..................x x 8 x x
........___________
x x x | x x x x x x x x
.............x x x
..........._____
................x x x x
...................x x x
..............______
......................x x x x
......................x x x x
......................_______

2007-10-24 17:59:09 · 3 answers · asked by Dr D 7 in Mathematics

How would I simplify...

y > 4/3x^2 - 12x + 29

to vertex form?

2007-10-24 17:48:08 · 2 answers · asked by Anonymous in Mathematics

if 6 oranges equals 3 apples and 6 apples equals 2 bananas how many bananas are there in one orange one apple and one banana. well one banana equals one banana

2007-10-24 17:38:25 · 8 answers · asked by Purple 2 in Mathematics

2007-10-24 17:37:21 · 2 answers · asked by Conservative Jesus 1 in Mathematics

The Peltier effect is the reverse of the Seebeck effect; a creation of a heat difference (between two joint) from an electric voltage.

This temperature difference gives rise to a seebeck voltage which is opposite the voltage of the battery. So we can resonably conclude that it can contribute to the loss of voltage of the battery, can't we?

2007-10-24 17:36:17 · 1 answers · asked by Anonymous in Physics