Science & Mathematics - 17 October 2006

2006-10-17 10:27:20 · 6 answers · asked by Ghee 1 in Zoology

use the distrubitive property to rewrite the expression without parentheses.

2006-10-17 10:27:08 · 16 answers · asked by Cookie Gurl 1 in Mathematics

2006-10-17 10:26:28 · 3 answers · asked by Sara D 2 in Mathematics

what is the typical colony morphology of Staphylococcus aureus in tryptic soy agar with 5 % sheeps blood?

2006-10-17 10:26:15 · 3 answers · asked by dlsjbk2125 2 in Other - Science

i heard that every bar code number on every product all over the world by way of secret coding amount to 666 is it true

2006-10-17 10:25:35 · 14 answers · asked by trucker 5 in Mathematics

2006-10-17 10:25:29 · 5 answers · asked by PIP 1 in Other - Science

I think a simple anser to this questio is that it is easier to do and works most of the time so from an evolutionary point of view it was cost effective However, I don't thin this is true, given that most things are not black and white, why would we think this way.

Also, if you do want to argue that things typically are black and white, or are close enough so as not to matter, you can freely argue that point as well.

2006-10-17 10:23:43 · 6 answers · asked by Don't Fear the Reaper 3 in Biology

Give my the website you found it if possible! Thanks.

2006-10-17 10:23:43 · 11 answers · asked by sebby_man 1 in Chemistry

I´m a junior science student inquisitive to know more.Who can explain to me how the Big Bang that produced the earth and sister planets manage to put them into orbit around the sun, and know the exact speed to orbit so that they won´t fall off into open space?

2006-10-17 10:21:15 · 11 answers · asked by ocz 1 in Astronomy & Space

I got a spider bit three days ago, it is just red and each day so far the bump gets bigger, its red and when I touch it it really hurts.
The bite is on my inner lower arm and the skin around it has stretched, circulation sometimes seems weird.
Should I be concerned???

2006-10-17 10:18:24 · 17 answers · asked by once upon a time.... 2 in Medicine

I am in eighth grade and am in an advanced algebra class but if I don't learn the distributive property I'm going to get ANOTHER F on the next quiz.

2006-10-17 10:17:18 · 12 answers · asked by chompizikstan 2 in Mathematics

A 2.00 kg block is being pushed against a spring with negligible mass and force constant k=400 N/m, compressing it 0.22 m. When the block is released, it moves along a frictionless, horizontal surface and then up a frictionless inlcine with slope 37 degrees.

What is the speed of the block as it slides along the horizontal surface after having left the spring?

How far does the block travel up the incline before starting to slide back down?

2006-10-17 10:16:48 · 2 answers · asked by fender_tri 1 in Physics

2006-10-17 10:16:28 · 2 answers · asked by Anonymous in Biology

2006-10-17 10:15:07 · 7 answers · asked by redheadsushi86 1 in Chemistry

2006-10-17 10:14:39 · 10 answers · asked by trucker 5 in Earth Sciences & Geology

What type of magnet does a bicycle dynamo use?
How does the magnet spin?

2006-10-17 10:14:01 · 3 answers · asked by Queenie 4 in Physics

2006-10-17 10:09:54 · 29 answers · asked by Anonymous in Mathematics

2006-10-17 10:09:14 · 15 answers · asked by Andrea F 1 in Zoology

I live in Northern California, I found a small red and light brown spider in my front yard, any ideas what kind of spider it is? its front is redish and its butt its light brown, almost a tainted white, the legs are red and brown mixed.

2006-10-17 10:06:22 · 9 answers · asked by jsjepatty 1 in Other - Science

2006-10-17 10:05:28 · 2 answers · asked by Ralph C 1 in Earth Sciences & Geology

A river flows due east at 1.70 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 9.70 m/s due north relative to the water.
a. What is the velocity of the boat as viewed by an observer on shore?
b. If the river is 330 m wide, how far downstream has the boat moved by the time it reaches the north shore?

How do you solve this problem?

2006-10-17 10:03:35 · 3 answers · asked by justinegunderson 1 in Physics

Explain polarity.
How is polarity related to surface tension ?
What does soap do to the surface tension of water?
How is polarity related to capillary attraction?
Give two examples of places where water moves upward by capillary attraction in nature.
Why does water rise higher in thinner capillary tubes?
How does polarity affect solubility?
Give examples of nutrients that are dissolved in lakes, rivers, and the ocean.
Describe a soap molecule's ability to dissolve water and oil.
Describe the phase changes that occur in the water cycle
How does freezing water contribute to the weathering of rocks?
Define density.
What causes ocean currents?
How does a fish's swim bladder affect its ability to change depths?
Why does ice float?
In which phase is water the most dense? the least dense?
Explain how detergents are related to eutrophication.
Why is water called the "universal solvent"?

2006-10-17 10:03:11 · 7 answers · asked by monkey 2 in Earth Sciences & Geology

This always puzzles me.
In the South East of the UK, where water shortages are at their worst, everyone always seems to blame leaky water supply pipes. Where do they think the leaking water goes?
Over 70% of water supply in that area is from boreholes, pumping water from the aquifer... where the leaking water ends up!
I know it is horribly innefficient to pour treated drinking water into the ground, but it is not 'lost'. Why don't the water companies argue their case..... or am I wrong?

2006-10-17 10:02:51 · 7 answers · asked by the bald one 1 in Earth Sciences & Geology

2006-10-17 10:01:55 · 7 answers · asked by Romeo 2 in Physics

2006-10-17 10:00:17 · 3 answers · asked by Ralph C 1 in Earth Sciences & Geology

See http://www.spaceweather.com

It shows a Coronal hole happening on the sun, and there may be an auroral display around the 20th.

Also, any other time, scroll down the left side of the page and look for geomagnetic storms. When the % forecast for "severe" is high, the aurora could happen.

2006-10-17 09:59:34 · 3 answers · asked by nick s 6 in Astronomy & Space

You know in the scientific method, you make a hypothesis and then do experiments? well the hypothesis is proved wrong if only ONE thing proves it wrong. You can't prove evolution wrong with experimenation. how is evolution scientific? like, I can't run experiments in a lab or a test tube to show that macroevolution is possible. I understand that microevolution exists, it has been proven. However, a scientist cannot go and make an experiment to test macroevolution. you can't observe animals evolving, can you? I've just been pondering what science really is and what some people make it out to be.

For instance, the speed at which objects accelerate in free fall on the earth is 9.8 m/s/s. If someone performed an experiment and discovered that it was really 15 m/s/s, that "law" would be proven wrong. this can't be done to evolution, making it unscientific. isn't this correct, if I follow the scientific method?

How is the theory of evolution scientific if it can't be proven wrong?

2006-10-17 09:57:32 · 7 answers · asked by ? 4 in Biology

Please show the work so I can learn instead of just getting the answer.

Thanks.

2006-10-17 09:56:31 · 7 answers · asked by crazylifer 3 in Mathematics

lim x^2 - 4
x->-2

would that just be 0? or I have to clear it in a such way that it doesnt gives me 0 as answer?

2006-10-17 09:51:18 · 8 answers · asked by Anonymous in Mathematics

______________: A pure substance made up of only one type of an atom

______________: Letter or pair of letters that represents an element

________ _________: The area surrounding the nucleus of an atom where electrons may be found

Please help! Thanks!

2006-10-17 09:50:27 · 10 answers · asked by ♥ 6 in Other - Science