Science & Mathematics - 16 November 2007

Here is the problem: http://i6.tinypic.com/7y7kmx5.gif

a. 178
b. 7924
c. 9436
d. 18,872

2007-11-16 18:45:56 · 3 answers · asked by sillyboys_trucksare4girls 2 in Mathematics

An echinoderm has an internal network of water-filled canals called the water vascular system..
True
False
Some sponges live on lake bottoms, while others are found on the seafloor.
True
False
Leeches are parasitic roundworms.
True
False
In clams and oysters, two shells are held together by powerful muscles—a trait common to all cephalopods.
True
False
Some sea urchins defend themselves using long, sharp spines.
True
False
If an animal’s blood never comes in direct contact with its tissues, the animal has an open circulatory system.
True
False
One of the common features of arthropods is a tough exoskeleton.
True
False

The process in which an arthropod sheds its skeleton and manufactures a larger one is called metamorphosis.
True
False
The three largest groups of arthropods are the crustaceans, arachnids, and insects.
True
False

In a lobster, the carapace is the part of the skeleton that covers the abdomen.
True
False

2007-11-16 18:36:49 · 9 answers · asked by CG ~!~ 2 in Biology

This would be a full grown eagle, an adult, yet single.

2007-11-16 18:29:01 · 1 answers · asked by darcyaf1 3 in Zoology

And whats the weather like where you are?

2007-11-16 18:28:55 · 40 answers · asked by Lady B 4 in Geography

^_^

2007-11-16 18:23:55 · 4 answers · asked by sonny 1 in Biology

Hi Y!A answerer's,
CST, I wish Y!A would use miltary time easier to figure out the USA was taught this early on, but I need to know the world as im buds always asking what time it is here then I can post for them. Thanks

2007-11-16 18:10:10 · 4 answers · asked by dousmokedoobies69 6 in Geography

A wire that is .002 m in diameter and 1.6 m long stretches .0005 m when a 30 kg weight is hung on its end. Find the Young's modulus of the wire.

2007-11-16 18:09:15 · 3 answers · asked by n_is_for_ninja 1 in Physics

can some1 point out my mistake over here? I can't seem to find my mistake n i think i may have a conceptual misunderstanding... thanks...

2 < x < 4
4 < x^2 < 16 (since x is definitely positively)
-5 < (x^2) - 9 < 7
-1/5 > 1 / [(x^2) - 9] > 1/7

the end results doesn't seem logical
can any1 help? thanks...

2007-11-16 18:08:12 · 4 answers · asked by YoherZ 1 in Mathematics

2007-11-16 17:51:15 · 16 answers · asked by Anonymous in Astronomy & Space

2007-11-16 17:48:13 · 7 answers · asked by Kayla C 1 in Weather

Cont. - If the degree measure of an included angle is 60°, what is the lenght of the shorter diagnol of the parallelogram?

2007-11-16 17:44:19 · 3 answers · asked by sharaont 6 in Mathematics

I know that Winter Solstice occurs December 20/21 etc
I can't find anywhere online that states how much time we gain back. There have been people who have mentioned its about a few mintues each day after the Solstice but I am not sure.

Can't wait for the day light to come back! This 4pm and it is dark already thing is really a drag ;)

2007-11-16 17:43:21 · 10 answers · asked by Anonymous in Weather

What are the uses of the satellite and how does it transmit information to earth?

2007-11-16 17:42:19 · 8 answers · asked by . 3 in Astronomy & Space

Something you remember being without, and now makes your life easier?

Mine is probably a popular one: Cell phones!

2007-11-16 17:42:04 · 23 answers · asked by gamegirl 2 in Other - Science

Or can they be developed, does anyone here have these abilities?
Try to guess anything about me?

2007-11-16 17:41:46 · 14 answers · asked by Anonymous in Parapsychology

2007-11-16 17:41:02 · 3 answers · asked by Anonymous in Physics

What if ....? we are not humans having spiritual experiences, but instead we are spiritual beings having human experiences

2007-11-16 17:36:58 · 21 answers · asked by ‡ЭЭЭ‡ 5 in Paranormal Phenomena

2007-11-16 17:31:48 · 14 answers · asked by jes200732 1 in Physics

I took some pictures tonight. There was finally a break in the overcast. It was taken with a Canon Powershot S3IS through an 8" Celestron Schmidt Cassegrain. It has vignetting, but I am a beginner and I am happy with the results I have been getting.

http://i28.photobucket.com/albums/c221/kbilyak/11_16_07.jpg

2007-11-16 17:23:06 · 13 answers · asked by Anonymous in Astronomy & Space

2007-11-16 17:19:44 · 1 answers · asked by kyforsberg 1 in Chemistry

2 letters

2007-11-16 17:04:35 · 3 answers · asked by goingcrazy!! 1 in Biology

2007-11-16 17:00:51 · 4 answers · asked by sharaont 6 in Mathematics

is it really going to hit the earth?

2007-11-16 17:00:15 · 6 answers · asked by all4ulove 3 in Astronomy & Space

I am writing a program for making complex numbers operations. However, I have one problem with powers:
Assume I want to calculate x^y, where x and y can be any number (integer, real or complex, finite or infinite).
In this case x^y = Exp(y*Ln(x))

Exp and Ln are defined for a complex number "z" (see details below)

The problem is that x^y will fail when x=0 - and don't know how will behave for infinite numbers
I'd like to know:
a) If my definitions of Exp and Log are right for any value (real, complex, finite or infinite)
b) What exceptional case I should handle specially in the power function (for example, 0^0=undefined, x^0=1, 0^2=?)
I want to make it the most general possible...
Thanks.

2007-11-16 16:53:54 · 1 answers · asked by Anonymous in Mathematics

I'm having trouble with this problem. I'm not sure what to do but I beilieve i would need to use momentum conservation.

when can assume when the springs velocity is 0 when the spring has reach it's max length .

the problem can be sloved by using the equation
m1v2 = m2v2

????

______________________________________

In a one dimensional air track two springs are collide head on in a elsatic collision. Spring 1 has mass of .081 kg and a velocity before contact with spring 2 of 5.3 m/s. Spring 2 has a mass of .053 kg and a velocity before contact with spring 1 of -3.6m/s. (the right side = +)

[1] what is the velocity of spring 1 and spring 2 when the two springs are at maximum compression?

[2] what is the velocity of spring 1 and spring 2 at the instant they touch each other?

2007-11-16 16:50:32 · 3 answers · asked by JLK 1 in Physics

Solve the system:

-x + 5y = 8

x + 2y = 6

2007-11-16 16:42:34 · 11 answers · asked by Anonymous in Mathematics

(2x+7)^-1....Do I apply the chain rule?

2007-11-16 16:40:38 · 5 answers · asked by RedSparkle 1 in Mathematics

These passionfruit are of the black variety and we purchased the mulch from a mushroom farm that called it the heavier composted muclh

2007-11-16 16:40:27 · 2 answers · asked by Anonymous in Botany

My F'(x) that I got is this; (3(x^3+4x+6)^2(3x+4)

For some reason the comp is saying it's wrong???!!

Is it?

2007-11-16 16:35:44 · 5 answers · asked by RedSparkle 1 in Mathematics

Is this true? It doesn't even have to be directly overhead, but even if it is at a point where it is half way between east and west it seems as though it is just a quarter rotation of the Earth away from being on the horizon.....so six hours?

2007-11-16 16:33:49 · 3 answers · asked by Anonymous in Astronomy & Space