Science & Mathematics - 3 February 2007

I also believe that there is iron and copper, but I am sure that there are more!

2007-02-03 08:22:03 · 3 answers · asked by poolesvillegc 2 in Chemistry

Please help with this problem:

a sample of gas at STP is to be heated at constant pressure until its volume triples. what is the new gas temperature?

2007-02-03 08:21:40 · 4 answers · asked by Mia16 3 in Chemistry

4. A boy standing on a bridge and threw a stone into the water below. He heared the sound 2 seconds later. How high is the bridge?

2007-02-03 08:21:34 · 3 answers · asked by nana g 1 in Physics

2007-02-03 08:21:04 · 2 answers · asked by zonzura 1 in Other - Science

Apparently hurricanes have been seen to generate micro instances of what appears to be time travel. I have read of pieces of straw being found impaled in a solid object such as metal or wood in the aftermath of a hurricane. I lost this reference and wonder if anyone out there has heard anything about this. As I recall the tremendous speed of the vortex was thought to be relevant. Any info on this phenomena?

2007-02-03 08:19:58 · 2 answers · asked by antes 2 in Physics

in indiana it is 10 F with a windchill of (-12 F)

2007-02-03 08:16:19 · 13 answers · asked by Anonymous in Weather

2007-02-03 08:15:23 · 3 answers · asked by Kris E 1 in Chemistry

Doing waves in Physics. I have to know this to avoid embarrassment as my brother (4 years my junior) is closest so far, something to do with waves not being totally reflected. It's kind of a competition between all of us A-level physicists, and my little brother, who likes stealth bombers! I would really appreciate an answer because a guy in the year above who's just got into Oxford uni didn't have a clue. Is this cheating? Help!

2007-02-03 08:14:59 · 8 answers · asked by lottie 2 in Physics

2007-02-03 08:11:45 · 2 answers · asked by Dave T 1 in Engineering

2007-02-03 08:11:16 · 8 answers · asked by Anonymous in Astronomy & Space

I know it is a theory, but how can people believe it? How can people believe that every single living organism evolved from a common ancestor? I mean like...that would mean we were related to..snails and grass?
Before you go any further, here's some questions:
1. Where did the space for the universe come from?
2. How did matter get so perfectly organized?
3. Is it possible that similarities in design between different animals prove a common creator instead of a common ancestor?
4. Natural selection onlyw orks iwth the genetic info availabe and tends only to keep a species stable. How would you explain the increasing complexity in the genetic code that must have occurred if evolution were true???

2007-02-03 08:09:50 · 22 answers · asked by love&&life 3 in Biology

2007-02-03 08:09:46 · 9 answers · asked by smokesha 3 in Astronomy & Space

a.30 & 35
b.35 & 40
c.40 & 45
d.45 & 50

please explain your answer & how u got that answer...

2007-02-03 08:09:21 · 8 answers · asked by mundoskisis4life 1 in Mathematics

Questions:

1.) the explanation of the universe.
a.) True
b.) False
c.) Both

2.) Michael Jackson.
a.) True
b.) False
c.) Both

2007-02-03 08:08:29 · 7 answers · asked by Dashiznit 1 in Astronomy & Space

As global warming intenses will white people no longer exsist do to thier lack of melon ?

2007-02-03 08:08:28 · 14 answers · asked by battla4life p 1 in Earth Sciences & Geology

So I have 200 mL of Water.

The mass of the calorimeter is 24.375g.

The initial mass of the calorimeter w/ the water is 217.833g (193.458g of water)

The final mass is 217.607 (193.232g of water).

The initial temperature is 23.0°C, the final temp is 43.0°C, the change is 20°C.

The mass of ethanol burnt is 1.418g.

So I need to know the Heat released from this mass of ethanol J/g

And Heat released from 1 mole of ethanol kJ/mol.

So I know I use the equation q= -mass x SHC x (change)Temp.

I'm mostly confused about what I plug in for the "mass" part. SHC is 4.184 J/K*g. And the change in Temp would be the 20.0°C which would have to be changed to Kelvins.

But if anyone could show me how to answer both questions fully, I would appreciate it ^ ^. Thanks.

2007-02-03 08:08:27 · 1 answers · asked by Anonymous in Chemistry

Can someone explain why the heat capacity of a liquid at its boiling temperature is generally a lot larger than the heat capacity of its vapor at the same temperature

2007-02-03 08:08:15 · 1 answers · asked by nathaniel49 2 in Other - Science

i heard soon that if someone was thrown to hell
i mean if he was exposed to fire
he will feel pains only because of his skin
i mean that if it became roasted i will not feel any pain

is it true??
can you give me any site proving that ???

2007-02-03 08:07:39 · 4 answers · asked by aimooon87 3 in Biology

OK. So I get it ... but can someone please tell me what I'm going to do with it?

2007-02-03 08:07:14 · 1 answers · asked by some chick 4 in Mathematics

When water enters your stomach, why doesn't your stomach acid react and heat up like when you, instead of diluting acid the correct way, pour the water into the acid?

(Acid into water is the correct way, right?)

2007-02-03 08:04:00 · 4 answers · asked by Crackotage 2 in Chemistry

My son is doing a science project to determine which "animal" has the dirtiest mouth. We have sterile cotton swabs to collect the samples. Do we need to put them in a sterile saline solution first, or will the saliva be wet enough to get a good sample? Also, is it best to rub the swab on the agar or roll it on--does it really matter which method is used? Thanks in advance!

2007-02-03 08:03:48 · 2 answers · asked by mrs_moby73 3 in Biology

I am doing a chemistry prolem and I am stuck at:

0.00393 = x ^ -2.61 How do I find x?

2007-02-03 08:03:45 · 8 answers · asked by Sgt. Pepper 2 in Mathematics

1
- 1
0
1/2

2007-02-03 08:02:12 · 11 answers · asked by melissa a 1 in Mathematics

True or false

2007-02-03 08:01:26 · 11 answers · asked by melissa a 1 in Mathematics

y = 1/2x + 1
y = 2x + 1/2
y = -2x + 4
y = x - 2

2007-02-03 08:00:20 · 3 answers · asked by melissa a 1 in Mathematics

2007-02-03 07:57:51 · 20 answers · asked by Anonymous in Geography

If Italians were to poorly copy this Greek concept as they always do wouldn't Biologum be something about making life miserable?

2007-02-03 07:57:04 · 2 answers · asked by tουΖουrs 3 in Biology

2007-02-03 07:56:22 · 5 answers · asked by arj7939 1 in Weather

1. An arresting device on a carrier deck stops a plane in 152m. If the plane is arriving at 66.7 m/s, find the acceleration of the plane. (i only c 3 variables in this prblem and according to the text book u need 4 variables then u can use an equation)...plz help

2007-02-03 07:54:40 · 1 answers · asked by no name 1 in Physics

2007-02-03 07:52:56 · 2 answers · asked by Anonymous in Medicine