Science & Mathematics - 18 November 2007

2007-11-18 02:12:01 · 10 answers · asked by Axel ∇ 5 in Other - Alternative

I'd be a cat I think, because 9 lives, and all they do all day is sleep :]

2007-11-18 02:10:26 · 21 answers · asked by Zorro. 5 in Zoology

2007-11-18 02:09:24 · 10 answers · asked by Tracy Terry 1 in Astronomy & Space

2007-11-18 02:08:09 · 3 answers · asked by Tracy Terry 1 in Astronomy & Space

My level would be intermediate calculus.

2007-11-18 02:07:26 · 2 answers · asked by Anonymous in Mathematics

in the horizontal direction. IF the batter's combined reacion and swing times total .350, how long can the batter watch the ball after it has left the pitcher's han before making a decision to swing.

2007-11-18 02:06:18 · 1 answers · asked by someone 1 in Physics

a.Fuel and coals
b.Hydrogen and Fuel
c.Nuclear Fusion

2007-11-18 01:56:20 · 3 answers · asked by sya 1 in Astronomy & Space

2007-11-18 01:54:15 · 4 answers · asked by Anonymous in Chemistry

A 5.0-m-diameter garden pond is 0.400 m deep. Solar energy is incident on the pond at an average rate of 400W/m^2 . If the water absorbs all the solar energy and does not exchange energy with its surroundings, how many hours will it take to warm from 16.0 degrees C to 22.0 degrees C?

2007-11-18 01:54:01 · 2 answers · asked by gbutterfly339 1 in Physics

The burner on an electric stove has a power output of 2kW. A 660 g stainless steel tea kettle is filled with 20 degree C water and placed on the already hot burner. If it takes 2.60 min for the water to reach a boil, what volume of water, in cm^3, was in the kettle? Stainless steel is mostly iron, so you can assume its specific heat is that of iron.

2007-11-18 01:52:20 · 1 answers · asked by gbutterfly339 1 in Physics

2007-11-18 01:50:19 · 4 answers · asked by M.R.M. 3 in Medicine

when a point of infinite density began to expand at very fast speed wouldn't time exist before hand so that the events needed for that big bang could happen?

2007-11-18 01:45:55 · 14 answers · asked by Anonymous in Physics

Show that the roots of the equation x^2 + (1-k)x = k are real for all values of k.

Please it would be nice if you explained the steps a bit. But its ok if you don't want to.

2007-11-18 01:43:27 · 4 answers · asked by Rora... 1 in Mathematics

2007-11-18 01:40:52 · 7 answers · asked by Jack 5 in Biology

2007-11-18 01:37:18 · 12 answers · asked by Infinity 7 in Astronomy & Space

What are cubic isometric crystals used for?

2007-11-18 01:32:44 · 2 answers · asked by AF 2 in Earth Sciences & Geology

Let {An} be an increasing sequence. Use the completeness property for increasing sequences to explain why {An} must tend to infinity if it does not converge to a finite limit.

2007-11-18 01:28:19 · 3 answers · asked by Anonymous in Mathematics

2007-11-18 01:27:16 · 6 answers · asked by Jillian M 1 in Geography

I learnt to do this ages ago but now my minds gone blank about it. Here's the question:

Work out
4 2/3 (divided by) 1 3/4

Can someone take me through it step by step please I really need to know who to do this!

2007-11-18 01:26:26 · 10 answers · asked by Anonymous in Mathematics

2007-11-18 01:25:10 · 6 answers · asked by HaSH 1 in Weather

Given that we have only been to the moon once (allegedly), why have we built stations in space but not on the solid ground of the moon. One would assume that the solid ground would make a good anchor point for bases and repairs would be easier without the more difficult spacewalking to do?

2007-11-18 01:19:11 · 15 answers · asked by od1ss1us 1 in Astronomy & Space

Especially when some of the claims are not valid in the first place?

2007-11-18 01:17:07 · 14 answers · asked by Jack 5 in Biology

-5(x + 4) > 3(x - 4)

2007-11-18 01:16:32 · 5 answers · asked by Anonymous in Mathematics

O2(g) + 2H2(g) → 2H2O(g)

Give the mole fraction of all species present at the end of the reaction.

2007-11-18 01:12:26 · 1 answers · asked by Brian 1 in Chemistry

Ok I went to school 3 WHOLE DAYS , and to half days .how many day of school did i go to ?

A.5
B.4
C.3
D2

2007-11-18 01:11:27 · 7 answers · asked by Anonymous in Mathematics

Are scientist for real i mean they are saying that the world isnt going to last after the year 2035 and now they are saying the world will meet boderline in 2020 are they just trying to scare us so we will take action or are they serious and if they are serious how can the world fix this global warming problem and do u actually think we can ?

2007-11-18 01:09:14 · 6 answers · asked by Brandon p 3 in Earth Sciences & Geology

2007-11-18 01:04:08 · 3 answers · asked by dolempap 2 in Astronomy & Space

2007-11-18 01:02:29 · 15 answers · asked by berty 3 in Weather

I love these trees, but I have never known exactly what they were called.

http://i227.photobucket.com/albums/dd268/lilacchild/HPIM2059.jpg

Thanks! =)

2007-11-18 00:52:47 · 5 answers · asked by lilacchild 2 in Botany

Chemistry Multiple Choice: Help?
Please Help With the following Multiple Choice:

Which of the following is NOT a true description of gas behavior?
a) There is an inverse relationship between pressure and volume and for a fixed mass of gas confined at constant temperature
b) There is a linear relationship between temperature and volume at constant pressure
c) There is a linear relation between pressure and temperature at constant volume
d) For a fixed number of moles of a gas confined at constant temperature the product of pressure and volume is constant
e) The gas laws only describe correctly gas behaviors for pure gases and not mixtures of gases

14) Which gas law when extrapolated indicates that there is a minimum low temperature that nothing can be colder than?
a) Boyle’s Law
b) The constant volume law
c) The combined gas law
d) Charles’ Law
e) Avagadro’s Law

Any Help will be appreciated.
Thanx.

2007-11-18 00:46:38 · 2 answers · asked by Anonymous in Chemistry