Science & Mathematics - 10 December 2007

A charged particle Q is placed at distance R away from a semi-infinite charged wire with charge per unit length of σ.

The graph looks something like this:

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Q

The charge is placed at distance R away from the wire, directly under the beginning of the wire


What is the total force acting on the particle?
Electrostatic forces are integrable, but can you derive the answer without actual integration?

2007-12-10 04:02:56 · 2 answers · asked by Alexander 6 in Physics

Haha I am doing an essay for a school project and I really need to know sum technologies NASA helped with!!!

2007-12-10 04:01:22 · 10 answers · asked by Daraqueen92 1 in Astronomy & Space

Consider a Linear feed back shif register with 'm' registers and maximum period '2^m-1'.Prove that for any non-zero initial state the output sequence contains exactly 2^(m-1) ones and 2^(m-1)-1 zeros in its output of 2^m-1 bits

2007-12-10 03:58:09 · 1 answers · asked by mehmoodabbas 1 in Mathematics

2007-12-10 03:56:45 · 6 answers · asked by Anonymous in Mathematics

I know you find the volumn of an irregular of an irregular object by water diplacement, but how do you find the density? Is it water displacement?

2007-12-10 03:55:28 · 4 answers · asked by alex96100 1 in Chemistry

We hear a lot about mass extinctions, and invasive species. But what about new species emerging? If the premises of evolution and mankind's changes being significant are both true, then when can we expect to see the new species emerge?

Thanks.

2007-12-10 03:55:02 · 8 answers · asked by American citizen and taxpayer 7 in Biology

1-) (x+3) (x-2)<0

2-)8^2/3=

2007-12-10 03:53:59 · 6 answers · asked by The Apostle 2 in Mathematics

half past seven on a Tuesday??

2007-12-10 03:52:53 · 2 answers · asked by clavdivs 4 in Mathematics

find a number between any two rationals a/b and c/d,
where, a, b, c, and d are integers where b, and d do NOT equal 0

2007-12-10 03:49:15 · 2 answers · asked by Madison 2 in Mathematics

2007-12-10 03:49:01 · 6 answers · asked by Anonymous in Zoology

What keeps my hand from not passin through a glass window, considering that both my hand and the window are both energy?

2007-12-10 03:45:32 · 9 answers · asked by Arnitak M 1 in Physics

i know it orbits the center of the galaxy, but does it orbit it in the same plane, or does it move under and over the galactic plane as well?

2007-12-10 03:43:18 · 4 answers · asked by elle4 1 in Astronomy & Space

x^6/x-^2

2007-12-10 03:40:29 · 3 answers · asked by thonia 1 in Mathematics

Considering that anything divided by itself is one, but you can't divide by zero, what is 0/0?

2007-12-10 03:37:48 · 13 answers · asked by R.S.A.B.C.R.D.A 2 in Mathematics

i was thinking of combining a dragon and a shark together to make a super race of "dragon sharks" that will wipe out the human race. does anyone know how i would go about doing that?

2007-12-10 03:35:50 · 8 answers · asked by ghettopoly39 1 in Zoology

what is the name of the most southerly great lake? i need help?

2007-12-10 03:35:48 · 8 answers · asked by rachel S 1 in Geography

2007-12-10 03:33:57 · 4 answers · asked by mx_pi 2 in Mathematics

A hill slopes at angle of 15 degree with teh horizantal. from the base of the hill, the angle of elevation of a 600 ft tower at the top of the hill is 40 degree. how much rope would be required to be reached from teh top of tower to the bottom of the hill? round answers to the nearest foot

2007-12-10 03:33:08 · 1 answers · asked by Ali A 1 in Mathematics

The link is below so you can view clearly with the problem.
Please show work and explain how you approached solving this problem so i can learn.
http://docs.google.com/Doc?id=dg4zw6jf_0fkcjznhs

2007-12-10 03:29:11 · 3 answers · asked by BBT 1 in Mathematics

for a beginner observer for observing celstrial objects especially planets and Andromeda.

2007-12-10 03:28:55 · 8 answers · asked by Nick 4 in Astronomy & Space

what effect might global warming have on earth's inhabitants?
give me many examples plss> ^_____________^

2007-12-10 03:28:04 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2007-12-10 03:27:39 · 11 answers · asked by cak 1 in Mathematics

In order for evolution to begin (through reproduction) isn't it necessary for the complex reproduction system to already be in place? How are females and males so different, yet work together so well to reproduce? I understand how evolution can account for a change in a species, but I don't get how it can account for the origin of the sexes.

2007-12-10 03:25:19 · 10 answers · asked by qazwsx 2 in Biology

also is it the same for the thingy at the back of a freezer ???

2007-12-10 03:24:10 · 2 answers · asked by alainamorgan@hotmail.com m 3 in Physics

If you were to use the substitution method to solve the following system,
x = y + 4,
2x - 5y = 2
the next step would be:

to multiply the top equation by - 2
to add the top equation to the bottom
to solve the top equation for y
2(y + 4) - 5y = 2

2007-12-10 03:23:43 · 2 answers · asked by Anonymous in Mathematics

With the effects of global warming does that be mean there would be less rain and snowfall?

2007-12-10 03:18:05 · 4 answers · asked by Chisa M 1 in Earth Sciences & Geology

When will the polar ice caps melt?And how much of the Earth's surface would be covered by water?

2007-12-10 03:16:29 · 1 answers · asked by Chisa M 1 in Earth Sciences & Geology

What are these systems of equations?

1. 3x - 2y =10
5x + 3y =4
(2, -2)
(-2, 2)
(2, -5)
(-2, 5)

2. x + y = 4
y = 2x + 1
(3, 1)
(1, 3)
(2, 2)
(-2, 2)

2007-12-10 03:12:21 · 2 answers · asked by Anonymous in Mathematics

I've heard people say that they can see the Man on the Moon but I don't know what that is. I've looked up pictures on the internet and I still don'e know what they are talking about.

2007-12-10 03:11:44 · 5 answers · asked by sharks blade 3 in Astronomy & Space

A convex polygon can be defined as a polygon with all its interior angles less than 180 degrees. Also, all diagonals lie entirely inside a convex polygon. If a convex polygon has 324 diagonals, how many sides does this polygon have?

2007-12-10 03:10:01 · 3 answers · asked by Anonymous in Mathematics