Science & Mathematics - 30 July 2007

In /\ABC, a line drawn from vertex A intersects BC in D. If m

2007-07-30 13:11:02 · 4 answers · asked by blahhhhhh 2 in Mathematics

I have to do a project about how the temperature affects the rate a cricket chirps. I don't know how to make my cricket chirp. I need any helpful suggestion.

2007-07-30 13:10:27 · 3 answers · asked by Anonymous in Zoology

i need help in compareing and contrasting the beliefs of thomas jefferson and alexander hamilton. please help. thank you

2007-07-30 13:04:54 · 3 answers · asked by Anonymous in Engineering

http://img48.imageshack.us/my.php?image=pict01091yc4.jpg
A user on my forum found this in his yard. He lives in Doncaster, North East UK. Any leads to an ID welcome.

2007-07-30 13:00:44 · 5 answers · asked by Anonymous in Botany

how can I get sunken eyes to that the veins stand out, and lose fat from my face. is there any dangers of this type of (DIET)? i dont want to end up losing loads of muscle from my heart or damaging my organs, but dont mind losing loads of weight or starving myself. is it just fluids that pop the bit under your eye out, so not drinking much will help, or not sleeping?!

Many thanks

2007-07-30 12:59:56 · 2 answers · asked by Anonymous in Medicine

Multiply and Simplify...
y^2-16/y^2+8y+16*3y^2-5y-2/y^2-6y+8
3y+1/y+4
Am I on the right track?

2007-07-30 12:59:54 · 3 answers · asked by Jacesmom 2 in Mathematics

an electric dc circuit is attached to a 12 yolt battery and has a 3 ohm resistor in it find the current flowing through the circuit?

2007-07-30 12:58:13 · 8 answers · asked by Anonymous in Engineering

2007-07-30 12:57:13 · 8 answers · asked by Jamie 2 in Weather

(a) what is th circumference of one wheel
(b) how far would the ike travel in 100 revolutions(turns) of the wheels

2007-07-30 12:56:43 · 6 answers · asked by jaktalebojeal 1 in Mathematics

2007-07-30 12:53:21 · 5 answers · asked by Nha H 1 in Zoology

2007-07-30 12:50:37 · 2 answers · asked by Anonymous in Medicine

So a comit is wizzing by 5 million miles from earth, traveling much faster than any rocket. If a spacecraft shoots a tether into the comet as it passes, releasing some slack as the comet goes by (to avoid a giant jerk) and therefore matching the speed of the comit, could this be an efficiant way to hitch a ride into deep space?

2007-07-30 12:46:53 · 6 answers · asked by John R 2 in Astronomy & Space

2007-07-30 12:46:29 · 6 answers · asked by sarika b 1 in Botany

does anyone out there know the difference between a GNAT and a MOSQUITO if you do can you please break down the answer thank you

2007-07-30 12:34:45 · 3 answers · asked by wudgemgzs 1 in Zoology

2007-07-30 12:26:10 · 7 answers · asked by freekeswar 3 in Astronomy & Space

I have green grapes growing in my front yard, but they don't mature. How do I get them to grow big and juicy instead of small and rock-hard?

2007-07-30 12:26:00 · 3 answers · asked by Anonymous in Botany

(Besides, I assume that after drowning, someone has a lot of water in the stomach, and so is a little heavier...)

2007-07-30 12:24:42 · 5 answers · asked by Anonymous in Biology

People who are born with the condition called Down syndrome generally have three copies of a certain chromosome (chromosome 21), rather than the usual two copies. What can you deduce from this regarding the proteins produced by a person with Down syndrome?

2007-07-30 12:21:59 · 3 answers · asked by Raphel M 1 in Biology

Anybody know any mp3s that teach telekinesis as you sleep? Like put it on autorepeat and as you sleep? Plus, is it free?

2007-07-30 12:21:07 · 8 answers · asked by Lex 2 in Parapsychology

Why is it accurate to think of each human being as the owner of a library of ancient information?

2007-07-30 12:20:24 · 2 answers · asked by Raphel M 1 in Biology

Example why is Lake Michigan cleaner then the smaller lakes in my town?? Thanks!!

2007-07-30 12:17:37 · 6 answers · asked by Anonymous in Earth Sciences & Geology

I have decided that within the next year I am going to climb a local radio tower. It has always enticed me so, it's about time. My question is, should I worry about getting zapped (bring a multimeter?), what kind of harness should I be equipped with, and what kind of clipping routine should I use. What is the worst punishment I could get if caught? Has anyone ever done this? Also, are there specific towers that would be better to climb than others? (I see different shapes and such all the time) thanks guys!

PS: I know the logical answer to all my questions is not to do it at all, but my mind is pretty much made up.

2007-07-30 12:17:32 · 7 answers · asked by BiggyShorty 1 in Other - Science

Okay there are 2 questions. can someone help me solve these problems and explain them.

Ethylene glycol, C2H6O2, is a liquid that is the base of the antifreeze you use in your car's radiator. it has a density of 1.1335g/cm^3 at 20 degrees Celsius. If you need 500 mL. of this liguid,what mass of the compound, in grams, is required?

A sample if unknown metal is placed in a graduated cylinder containing water. The mass of the sample is 37.5g, and the water levels before and after adding the sample to the cylinder in the figure. Which metal in the following list in likely the sample(d is the density of the metal)?

A)Mg. d=1.75g/cm3
B)Fe, d+ 7.87 /cm3
C)Ag, d=10.5g/cm3
D)Al, d=2.70 g/cm3
E)Cu, d= 8.96 g/cm3
F) Pb, d= 11.3 g/cm3

Left figure the one without the metal is 7
Right Figure with the metal is 21

2007-07-30 12:13:44 · 2 answers · asked by Gamer G 4 in Chemistry

For a certain type of nonlinear spring, the force required to keep the spring stretched a distance s is given by the formula

F = ks^(4/3).

If the force required to keep it stretched 8 inches is 2 pounds, how much work is done in stretching this spring 27 inches?

Amount of work done:________ inch pound(s).

2007-07-30 12:02:04 · 3 answers · asked by goodguy083 1 in Mathematics

2007-07-30 11:57:48 · 3 answers · asked by lovey 1 in Botany

I am at university in Britain, and have the opportunity to learn some German for free. As an engineering student, I have a very tight timetable as it is.

How widely is German spoken as a first or buisiness language, and is there another foreign language that would be more appropriate for an engineer to speak?

2007-07-30 11:56:34 · 13 answers · asked by Anonymous in Engineering

The steps, requirements, ect.

2007-07-30 11:50:06 · 11 answers · asked by Jokerx 1 in Astronomy & Space

I've been doing some reading lately and am very interested in dark matter. Can someone give me a very brief explanation of what exactly dark matter is believed to be and who are some of the scientists who have introduced us to our, albeit limited, understanding of the subject.

2007-07-30 11:48:50 · 6 answers · asked by JDK 2 in Astronomy & Space

I left them here on the desk earlier and now I can't find them, have you seen them around

2007-07-30 11:48:43 · 5 answers · asked by Mercury 2010 7 in Engineering

2x +5y =16,

4x-3x = -7.

The first prob is over the second one

2007-07-30 11:41:11 · 11 answers · asked by lil_danca06 4 in Mathematics