Science & Mathematics - 14 September 2007

3, 4, 7, 12, 19

2007-09-14 08:37:48 · 8 answers · asked by Dilara 2 in Mathematics

need help

2007-09-14 08:36:34 · 2 answers · asked by alphajoe 1 in Engineering

well i read this womans question about telekinetic and her son moved magasiens well i was wondering how do you develop these "powers" pls answere its my firs Q and im new
(can you puts some links or sommin)

2007-09-14 08:35:17 · 2 answers · asked by Anonymous in Physics

2007-09-14 08:33:58 · 6 answers · asked by Anonymous in Engineering

HOW IN THE WORLD DO YOU DO THIS PROBLEM???

2007-09-14 08:32:43 · 4 answers · asked by Anonymous in Mathematics

The fight will take place in their own natural habitats

2007-09-14 08:31:41 · 21 answers · asked by jeremy s 2 in Zoology

A curve has parametric equations x= ln (cot x/2) - cosx and y=sinx.

Show that dy/dx= - tanx

Show ur workings plzzzz

2007-09-14 08:30:29 · 1 answers · asked by Mehn 3 in Mathematics

2007-09-14 08:29:24 · 7 answers · asked by beth 1 in Biology

I remember reading something a while ago about how the massive black hole at the center of our galaxy creates an extremely thin disc that streches throughout our entire galaxy and we will be passing through it sometime in 2008. Does anyone know what this is called or a website that can provide me with more information on it?

2007-09-14 08:29:22 · 4 answers · asked by deadbace 1 in Astronomy & Space

2007-09-14 08:29:19 · 8 answers · asked by Matthew A 1 in Astronomy & Space

Let D be a subset of R^n and suppose all the partial derivatives of f:D --> R exist and are bounded on D. Show that f is Lipschitz on D.

I could prove this for the real line, but got confused in this more general context.

2007-09-14 08:28:45 · 2 answers · asked by Anonymous in Mathematics

2007-09-14 08:27:10 · 3 answers · asked by - 3 in Chemistry

2007-09-14 08:25:04 · 6 answers · asked by Anonymous in Physics

2007-09-14 08:21:03 · 3 answers · asked by Anonymous in Physics

Let X and Y be topological spaces. Suppose Y is Haursdorff and let f and g be continuous functions from X to Y. Suppose f and g agree on a subset D of X, dense in X. Show that f(x) = g(x) for every x in x, that is f = g.

I could prove this when X and Y are metric spaces, but here we have a general case.

2007-09-14 08:20:40 · 2 answers · asked by Anonymous in Mathematics

x=3sin y
dx/dy in terms of y is: 3 cos y
hence show dy/dx= 1/(9-x^2)^1/2
and also find a function of x with this derivative?

im not sure how the answer of dy/dx is found though eliminating the trig expressions, logical steps with explanation would be great. thanks :)

2007-09-14 08:17:51 · 4 answers · asked by Anonymous in Mathematics

i love it when its windy, and cloudy....right after, or before rain.... but not during rain.. and lightning.... i set up my stuff outdoors just to enjoy this type of wether.or chillin as i call it.. ny of you into similer stuff?

2007-09-14 08:04:21 · 14 answers · asked by Anonymous in Weather

2007-09-14 08:00:14 · 6 answers · asked by Anonymous in Weather

for example, if 1.5 V with a current discharge of 500mA is it going to last longer than a 1.5V with a current discharge of 1 A? or does the voltage determine the battery?

2007-09-14 07:58:46 · 5 answers · asked by Lee Hal 2 in Engineering

2007-09-14 07:57:32 · 2 answers · asked by Anonymous in Weather

2007-09-14 07:56:49 · 19 answers · asked by Anonymous in Weather

2007-09-14 07:56:18 · 7 answers · asked by Anonymous in Astronomy & Space

do i plant them when the green shell is around the nut or later when only the brown nut is there. how deep and so on.

2007-09-14 07:54:54 · 2 answers · asked by Anonymous in Botany

2007-09-14 07:53:43 · 13 answers · asked by bkprincess 2 in Mathematics

2007-09-14 07:51:37 · 10 answers · asked by Jiejohn C 1 in Astronomy & Space

2007-09-14 07:46:33 · 4 answers · asked by laces01234567890 1 in Botany

2007-09-14 07:45:31 · 4 answers · asked by Anonymous in Biology

Does the Planet Nibiru Exist? And if so where is it? Can it be observed with a telescope? Thanks.

2007-09-14 07:45:29 · 10 answers · asked by kevin 2 in Astronomy & Space

twelve divided by the sum of x and 2 equals the quotient of 4 and the difference of x and 2. Find x.

2007-09-14 07:40:37 · 9 answers · asked by gladdo19 1 in Mathematics

Instrument transformers: a) How is an instrument transformer characterised? Give an example for each category. b) What has to be done to avoid that the power is transferred? c) Why is it concerning the currents necessary to measure high overcurrents, but not concerning the voltages necessary to measure high overvoltages?

2007-09-14 07:38:10 · 1 answers · asked by Naveen C 1 in Mathematics