Science & Mathematics - 17 September 2006

2006-09-17 12:53:13 · 10 answers · asked by Taylor S 1 in Weather

Whassup with that?

2006-09-17 12:53:05 · 11 answers · asked by Anonymous in Zoology

2006-09-17 12:50:57 · 7 answers · asked by Anonymous in Other - Science

I am not looking for a directional type limit like that of a diode, but rather one that would act like a funnel placing a limit on the amount of watts that can pass through it. I am also not looking for a fuse or a breaker. It needs to be a functional limit not a safety

2006-09-17 12:50:56 · 10 answers · asked by Anonymous in Engineering

2006-09-17 12:49:13 · 7 answers · asked by star 2 in Astronomy & Space

if you know where they are plaeez tell me with a map also!

2006-09-17 12:47:16 · 6 answers · asked by jenn 1 in Geography

We did a lab in Biology, and I couldn't spot any. However, they are plant cells, so I am confused. Thanks, and have a good day!

2006-09-17 12:45:06 · 10 answers · asked by jaykpatel1992 1 in Biology

Too much oxygen will NOT blow the candle out

2006-09-17 12:43:07 · 10 answers · asked by Mickey 1 in Physics

And did society accept his theory right away?

2006-09-17 12:41:32 · 9 answers · asked by Anonymous in Other - Science

Could it be brain's mechanism of shutting down?

Stupid question?

2006-09-17 12:40:08 · 14 answers · asked by Anonymous in Zoology

2006-09-17 12:34:21 · 16 answers · asked by Eduardo V 1 in Physics

2006-09-17 12:32:21 · 7 answers · asked by Storm 2 in Physics

stripes running vertically along the body. It kept swimming near us and would get on our legs. It never hurt any of us. Does anyone know what this thing might be called?

2006-09-17 12:31:48 · 3 answers · asked by otexasgirlo 3 in Zoology

We have thousands of people in prison that have not been charged. We use torture on people from other countries. We eavesdrop on our own people.

This isn't the same country as it was in the good old days of Bill Clinton or even Reagan or Carter.

2006-09-17 12:30:43 · 23 answers · asked by god1oak 5 in Earth Sciences & Geology

How do you find density, what is its formula, ramifications and units?

thanks :)

2006-09-17 12:30:40 · 3 answers · asked by Anonymous in Chemistry

A frog falls in a hole 20ft.deep. Every day he jumps up 1 ft. and slides back 1/2 ft.

2006-09-17 12:29:27 · 7 answers · asked by sweetcandy 1 in Mathematics

I have a TI-30XA scientific calculator and it ran out of batteries. I was wondering if anyone knew what type of battery it was, where I could find it, and how much it costs.

2006-09-17 12:28:12 · 1 answers · asked by maretahamre 3 in Mathematics

I was looking at a world map and south america and africa are nearly identical in shape. Also, both land masses in the hemisphere look like they could fit right into each other like pieces of a puzzle. Do you think the water (ocean, rivers, floods, etc.) cause the land to split apart like the water that cut through the Grand Canyon? Or do you think that if the water between the two hemispheres was taken away, we might see how the entire land mass was connected?

2006-09-17 12:27:11 · 15 answers · asked by nickiebaby 2 in Earth Sciences & Geology

it's for my chemistry lab and I don't know the answer!!!!!!!

2006-09-17 12:25:13 · 6 answers · asked by Anonymous in Chemistry

2006-09-17 12:24:17 · 9 answers · asked by nickiebaby 2 in Biology

2006-09-17 12:23:10 · 8 answers · asked by nickiebaby 2 in Astronomy & Space

2006-09-17 12:22:38 · 9 answers · asked by nickiebaby 2 in Astronomy & Space

Is the initial "C" pronounced like "S" or "K" ?

2006-09-17 12:21:13 · 6 answers · asked by Everyone 4 in Zoology

Aren't they continously falling and accelerating?

2006-09-17 12:20:39 · 7 answers · asked by James T 3 in Astronomy & Space

I am applying Gauss' Law to an elementary situation: A sphere of radius r containing a uniform charge density rho, with an electric field normal to the surface of constant value E. Gauss' Law has two forms, integral and differential. See http://en.wikipedia.org/wiki/Gauss%27_law In the integral form, the surface integral of E (normal component) equals the total charge enclosed divided by e0. Since E is constant, the surface integral result is just E times the surface area 4*pi*r^2*E. The total charge enclosed is rho times the spherical volume, or (4/3)*pi*r^3*rho; therefore 4*pi*r^2*E = (4/3)*pi*r^3*rho/e0. The result is E=(1/3)*r*rho/e0.

The other form is div(D)=rho, or div(E)=rho/e0. In spherical coordinates div(E)=(1/r^2)d/dr(r^2*E). For E=constant, this is (1/r^2)*(E*2*r), or 2*E/r. So using the differential form I get
E=(1/2)*r*rho/e0.

One method gives a 1/3 multiplier, the other a 1/2 multiplier. What am I doing wrong? Which one is right?

2006-09-17 12:18:37 · 1 answers · asked by gp4rts 7 in Physics

2006-09-17 12:18:07 · 16 answers · asked by Eduardo V 1 in Physics

I know that erect nipples are caused by a nervous/muscular reaction rather than by blood flow. This causes me to wonder if someone could potentially have hard nipples after death.

2006-09-17 12:17:50 · 8 answers · asked by Dustin 2 in Biology

Ok, I'm a Geology 101 student and this question was placed on our study guide. I know gold would most likely be found at convergent boundaries but how would you concentrate it? Please, explain as simple as possible

2006-09-17 12:16:58 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2006-09-17 12:13:11 · 2 answers · asked by PrerdyCountryGal 1 in Other - Science

2006-09-17 12:11:29 · 5 answers · asked by MBA student 1 in Mathematics