Science & Mathematics - 4 October 2006

2006-10-04 17:51:27 · 3 answers · asked by Selma I 1 in Chemistry

i want to represent a circle as polygon.. some approximations allowed.. any algorthm to do that or links pointing to that will help

2006-10-04 17:49:02 · 1 answers · asked by dj 1 in Engineering

I know that it would destroy active electrical equipment but if the device had no electricity going through it at the time could it be affected?

2006-10-04 17:48:20 · 5 answers · asked by shaney 3 in Other - Science

OK, I asked this a lil while back and was told to post a more detailed question so here goes. I am in North Louisiana and the time is about 3:30 AM. I am facing East. Assuming that directly above me is 0 degrees at about 5 degrees in front of me is the Little Dipper. Just about directly above me. Going down in a straight line from the Little Dipper, still facing East, at about 45 degrees I get to the Big Dipper. Continuing down in a straight line from the Big Dipper I get to a very bright star right above the treetops at about 70 degrees. The Little Dipper, Big Dipper, and this star are all lined up with the Little Dipper being about half again as far from the Big Dipper as this star is. Also going down this imaginary line this bright star is the first bright star below the Big Dipper. Can someone tell me the name of this star (or possibly planet)?

2006-10-04 17:48:09 · 4 answers · asked by Anonymous in Astronomy & Space

you are desigining a house with 3-feet-wide windows on the back of the house. There are 4 feet between each end window and an edge ofthe house. the width of the house is 33 feet. how far apart should the windows be?

1.write a verbal model
2. write an equation for the model
3. solve equation and answer question.

2006-10-04 17:46:53 · 4 answers · asked by NABEELiOS 1 in Mathematics

General single weld symbols ,I know and have the hand book

2006-10-04 17:45:16 · 2 answers · asked by w111 t 1 in Engineering

2006-10-04 17:43:26 · 4 answers · asked by Anonymous in Chemistry

I know it is formed in the same way as sandstone, but HOW?

2006-10-04 17:40:34 · 5 answers · asked by Anonymous in Biology

Hello... CMBR was produced from the big bang 13.7 billion years ago, and are still detected today all around the univerise. They all posses the same exact temperature.

For me, it makes sense that they have the same exact temperature, since they were all emitted 13.7 billions years ago, thereofre, cooling at the same rate.

However, for scientists, its a "problem" that all these radio waves have the same exact temperature. They call this problem the "Horizon Problem"....

Why is it a problem that they posses the same exact temperatures?

2006-10-04 17:32:32 · 4 answers · asked by Xeel 1 in Astronomy & Space

what is the absolute value of |-7| , |-2.9| ,
-|9+2| ?

2006-10-04 17:27:13 · 10 answers · asked by NABEELiOS 1 in Mathematics

9x^2 + 12xy + 4y^2 - 25

2006-10-04 17:25:52 · 4 answers · asked by Samantha F 1 in Mathematics

If the sides of a square are decreased by 2 cm, the area is decreased by
36 cm2. What were the dimensions of the original square?
show the work so I can learn it please. I am so confused

2006-10-04 17:24:10 · 6 answers · asked by Samantha F 1 in Mathematics

I unsuccessfully tried to nurse a butterfly back to health but it died. I want to know what I can do to preserve it before something happens to it.

2006-10-04 17:14:21 · 6 answers · asked by Fee-Fee 3 in Zoology

2006-10-04 17:13:30 · 8 answers · asked by tom science 4 in Astronomy & Space

that if you planted enough on the moon you could generate enough oxygen to sustain life? and how would that affect the moons atmosphere?

2006-10-04 17:13:18 · 3 answers · asked by joseph d 2 in Astronomy & Space

4x^2=13x+12

2006-10-04 17:06:56 · 8 answers · asked by Samantha F 1 in Mathematics

I was just wondering if anyone could help me, I was wondering what people that do Autopsies are called??

2006-10-04 17:04:44 · 9 answers · asked by Jess 1 in Other - Science

It rears up and brings its paws down hard to break the ice.

2006-10-04 17:03:31 · 11 answers · asked by rebekkah hot as the sun 7 in Zoology

A bob of mass m is suspended from a fixed point with a massless string of length L (i.e., it is a pendulum). You are to investigate the motion in which the string moves in a cone with half-angle theta.

What tangential speed, v, must the bob have so that it moves in a horizontal circle with the string always making an angle theta from the vertical?

Express your answer in terms of some or all of the variables m, L, and theta, as well as the acceleration due to gravity g.

2006-10-04 17:03:29 · 5 answers · asked by agnobles 2 in Physics

What's the answers to 3 1/4 - 1 5/8? 15 1/3- 6 1/2? 12 2/5- 4 3/4? And 12 5/8-3 3/4? Thanx I will appreciate it very much.

2006-10-04 17:01:28 · 6 answers · asked by Anonymous in Mathematics

2006-10-04 17:00:42 · 8 answers · asked by praveen m 1 in Astronomy & Space

Could you please explain exactly what a cell is.






http://www.chicken.co.nr/

2006-10-04 16:58:32 · 7 answers · asked by dchiuch 2 in Biology

I know the potato trick. Sometimes I think it works, sometimes I dont. The other day I was welding with another guy on the inside of a 12x32 steel tank. We both got flash in our eyes but my eyes were killing me the next evening. The worst I ever got. That morning I couldnt open my eyes, couldnt sleep, couldnt stop them from tearing. I just wish there was something I could do if it happens again (besides be careful and not let it happen again). I have to work fast and in 12 hours I cant shield my eyes every time someone else strikes an arc.

2006-10-04 16:58:08 · 5 answers · asked by mixmaster 2 in Engineering

d = d0 + v0t + ½ a t2
v = v0t + a t
v2 = v02 + 2ad

A car accelerates from 5 m/sec to 10 m/sec with an acceleration of 1 m/sec/sec.
a. How far did the car travel during this acceleration?

I don't need the answer to this problem, I would really just like how to get this problem going. The equations on top are the ones I need to use and I have no idea where to start. Any help is great.

2006-10-04 16:58:07 · 8 answers · asked by braillehand 1 in Physics

Two masses are connected by a light string passing over a light, frictionless pulley as in Figure P5.63. The m1 = 5.45 kg object is released from rest at a point 4.00 m above the floor, where the m2 = 2.55 kg object rests.

Figure P5.63

(a) Determine the speed of each object when the two pass each other.
3.80 m/s
(b) Determine the speed of each object at the moment the 5.45 kg mass hits the floor.
5.33 m/s
(c) How much higher does the 2.55 kg mass travel after the 5.45 kg mass hits the floor?
m

thank you for your help!

2006-10-04 16:54:35 · 5 answers · asked by Anonymous in Physics

Hydroxyl OH radicals, NO radicals, Chlorine and Bromine attack the ozone layer.

But does Fluorine attack the ozone layer ?

2006-10-04 16:51:33 · 5 answers · asked by Technotron 2 in Chemistry

When dealing with cubics (ax^3 + bx^2 + cx +d) are there plug and chug formulas avalible to find:
1) Max and Min values (ie the turning points of the graph)
and
2) The area under the curve
Right now I have about 30+ cubic equations that I have the coefficients for but need to find 1 and 2. I dont want to go through each one by taking the derivitives etc ... I am just wanting to set something up in Excel where I can place the coefficients in certain columns and I will recieve the results for 1 and 2 automatically.

Any ideas??

Any and all help wanted.

Thanks in advance :)

2006-10-04 16:51:17 · 3 answers · asked by ??Math?? 2 in Mathematics

2006-10-04 16:46:00 · 6 answers · asked by Quintney H 1 in Other - Science

I'm currently studying derivatives in Calculus, but I have no idea how to even approach this problem. Could someone lead me in the right direction without giving the answer?

Question: Assume that f ' (c) = 3. Find the value of f ' (-c) if: f is an odd function, and if f is an even function.

I don't even understand why odd and even functions are included...

2006-10-04 16:45:48 · 4 answers · asked by Moosehead 2 in Mathematics

IF the letters appear blurred does it help to squint?
would covering the eye with your hand have the same effect as construction paper?
Y would u not feel upside down in space?
Y's it important to have insensitive and sensitive areas in your skin??


I need the answers urgent.........i know these questions sound dumb.............buh i hav no way out!!!!

2006-10-04 16:43:55 · 3 answers · asked by Anonymous in Medicine