Science & Mathematics - 22 October 2006

please recommend me any maths book where I can learn what I need for general relativity.

2006-10-22 11:36:06 · 3 answers · asked by M T 1 in Mathematics

What is the new pressure when the oxygen is transferred to a 60-L vessel, at constant temperature?

A. 2 atm
B. 3 atm
C. 4 atm
D. 8 atm

2006-10-22 11:36:00 · 1 answers · asked by Ashley C 1 in Chemistry

2006-10-22 11:35:26 · 3 answers · asked by s a 1 in Chemistry

2006-10-22 11:34:07 · 1 answers · asked by Anonymous in Chemistry

2006-10-22 11:34:00 · 1 answers · asked by share the love!!! 2 in Other - Science

A car of mass 1.2 103 kg is traveling east at a speed of 30 m/s along a horizontal roadway. When its brakes are applied, the car stops in 5.8 s. What is the average horizontal force exerted on the car while it is braking?

2006-10-22 11:32:54 · 2 answers · asked by activegirl 1 in Physics

Thanks to those of you who helped with my Chain Rule problem. Thats what I got but the buck had a different answer. Anywho, since I'm reviewing, this is another one I'm having trouble with.

Find the area of the between the curve: y=x^3, and the x-axis,from x=-2 to x=3.

2006-10-22 11:31:20 · 4 answers · asked by Anonymous in Mathematics

what is the difference between mass and weight? are they measured in different units?

2006-10-22 11:29:56 · 12 answers · asked by superman 3 in Physics

How does it turn out see through?

2006-10-22 11:28:49 · 11 answers · asked by ruthie baby 1 in Other - Science

2006-10-22 11:28:35 · 7 answers · asked by pinhed_1976 6 in Weather

In an n-dimensional vector space, is it possible to have a set of more than n orthogonal vectors?

I am thinking of two and three dimensional case. In two dimensions (from Euclidean Geometry) we already know that it is not possible to have more than 2 straight lines that are perpendicular to each other. In 3-D, my intuition tells me that the same is true (like the x,y,z axes in rectangular coordinates). Does this hold for any n-dimensional vector space?

In 25-dimensional inner product space, is it possible to have 26 vectors that are all orthogonal to each other?

What is the case with infinite dimensions? My guess is that it is possible to have such a set of any number of elements. For example, if I consider the set of all continuous functions on [-1,1], then the subset {sin(x), cos(x), sin(2x), cos(2x), ...} is an orthogonal set under the inner product defined as =the integral of f*g from -1 to 1.

2006-10-22 11:28:12 · 4 answers · asked by The Prince 6 in Mathematics

2006-10-22 11:27:33 · 9 answers · asked by STORMY K 3 in Physics

Imagine a railway carriage full of water is moving at constant velocity along an infinitely long,
straight, level, frictionless track when it develops a leak and water begins to flow out at a constant
rate, straight downwards. Discuss what will happen to the velocity of carriage as the mass of the
carriage changes. Your answer should refer to Newton’s Laws of Motion as appropriate, and to
the Principles of Conservation of Momentum and Conservation of Energy.

2006-10-22 11:26:43 · 6 answers · asked by alan_warr 2 in Physics

2006-10-22 11:24:56 · 3 answers · asked by wvcountrygirl_93 2 in Earth Sciences & Geology

cement

2006-10-22 11:24:02 · 6 answers · asked by Anonymous in Mathematics

is a cashew a mushroom

2006-10-22 11:23:49 · 8 answers · asked by duriel m 1 in Earth Sciences & Geology

2006-10-22 11:16:55 · 1 answers · asked by wvugal32 1 in Biology

wiring
heat
fan
plug

2006-10-22 11:12:15 · 5 answers · asked by Maribel o 1 in Engineering

2006-10-22 11:11:52 · 1 answers · asked by Anonymous in Mathematics

first i have problems like this:
-6x2* + 36x +96
and im suppose to factor that

then ive got
48x2* -24x +3
and i have to factor and solve this

the 2's that have a * after then are subscripted, but i cant type that.. like 6x suared, is wat it says...

can anyone explain to me how to do this? i know there a 4 boxes all connected together like

box box
box box

but i still dont get this.. any help pease?

2006-10-22 11:08:51 · 4 answers · asked by Anonymous in Mathematics

I'm looking for something like 'Redshift' or similar. Any suggestions would be gratefully recieved.

2006-10-22 11:08:12 · 2 answers · asked by Anonymous in Astronomy & Space

Its in the drink, RockStar, Taurine 946mg, and Guarana 200mg. What could this do to me?

2006-10-22 11:07:34 · 7 answers · asked by Gumby G 2 in Chemistry

Differentiate:

cos(sin(e^(x^2)))

2006-10-22 11:06:53 · 4 answers · asked by Anonymous in Mathematics

arms. As collide, while holding each other, with what speed do you both move off together?

a.) 2.2 m/s
b.) 5.0 m/s
c.) 23 m/s
d.) zero

2006-10-22 11:04:24 · 3 answers · asked by Kenya W 1 in Physics

2006-10-22 11:02:25 · 2 answers · asked by ada b 1 in Biology

PLEASE HELP!!!

2006-10-22 10:59:23 · 2 answers · asked by Ben S 2 in Mathematics

2006-10-22 10:58:53 · 10 answers · asked by black_star_47001 3 in Astronomy & Space

Earth?
1. 16 times
2. 8
3. 4
4. 2
5. the same

2006-10-22 10:57:42 · 2 answers · asked by Anonymous in Physics

2006-10-22 10:52:23 · 4 answers · asked by slayer_17 1 in Physics

My daughter asked me this question earlier and I said Its Einsteins equation- it is used to show how mass is related to energy and speed. Its needed for space travel". lol. I feel that she was not very happy with this answer. Can anyone else help please and maybe give an analogy or recommend a good kids book to demonstrate the theory?

2006-10-22 10:49:42 · 24 answers · asked by gadriel 3 in Astronomy & Space