Science & Mathematics - 16 February 2007

2007-02-16 01:09:21 · 7 answers · asked by The P of D 2 in Zoology

2007-02-16 01:07:19 · 37 answers · asked by THIRUPATHI T 1 in Astronomy & Space

2007-02-16 01:06:14 · 14 answers · asked by Anonymous in Weather

2007-02-16 01:05:02 · 7 answers · asked by arabella q 1 in Astronomy & Space

Does the colour of a candle affect how fast it burns and finishes? Why..?

2007-02-16 01:02:48 · 5 answers · asked by loulou ! 3 in Chemistry

I have ice on my driveway and I need it gone fast! I have tried sea salt AND hot water AND just pounding away at it with a shovel but it wont budge. I need it gone in the next half hour (by 9:30 am eastern time). I think it would be best to chemicaly dissolve it. But I also need to know the risks of doing what you suggest too. ANSWER FAST!!! I WILL GIVE THE FIRST WORKING ANSWER THE BEST ANSWER AWARD!!!

2007-02-16 01:02:39 · 8 answers · asked by Anonymous in Chemistry

I am doing a science project and some of the things I need are blotting paper and a gas jar. Does anyone know where I can get these? Or if possible is there anything I can use besides a gas jar?

2007-02-16 01:01:48 · 4 answers · asked by Anonymous in Other - Science

How many cirxles can be drawn through 3 non collinear points?

2007-02-16 01:01:14 · 8 answers · asked by Sudha 1 in Mathematics

Is there a way to make a magnetically propelled car- as a project? I'm an undergraduate engineering student. I need a simple yet different project. I don't intend to make the whole car, just looking for a mechanism to make a car move using magnets and that too without using tracks( that is, the tracks they use in maglev trains).

2007-02-16 01:00:20 · 2 answers · asked by Anonymous in Engineering

2007-02-16 00:57:36 · 4 answers · asked by x 2 in Other - Science

2007-02-16 00:56:27 · 20 answers · asked by Anonymous in Parapsychology

in everyday life

2007-02-16 00:55:54 · 2 answers · asked by karen s 1 in Engineering

Hello.

I need to know the best method for analysing outer membrane proteins on gram negative outer membrane proteins.

Need to know what the proteins are, what they do? and possibly the dna/amino structure.

All help much appreciated. thankyou.

2007-02-16 00:53:48 · 1 answers · asked by stupsmith 1 in Biology

In Morse Code all characters are transmitted using a sequence of four symbols, each of which with a dot or a dash?

(a) How many different characters can be forme with a sequence of fousr symbols, each which is a dot or dash?

(b) How many can be formed with a sequence of one, two, or three symbols?

I need help understanding how to do the problem the answers are 16 and14 I just need how to do it.

2007-02-16 00:52:56 · 4 answers · asked by elizabeth g 2 in Mathematics

I've heard that scientists don't know the answer to this one but I would love to hear your theories. or if you actually know the answer, hey! Even better!

2007-02-16 00:52:44 · 2 answers · asked by The P of D 2 in Biology

A human canonball with a mass of 80 kg is fired out of a cannon with a force of 6,400 N. find the acceleration


Calculate the force of the earth's gravity actint on a person with a mass of 50 kg


What is the net force on a 1500 kg elevator acceleating at 2.2 m/s/s


What net force is neede to accelerate a 67 kg cart at 17 m/s/s

2007-02-16 00:52:15 · 3 answers · asked by Caro♥♪ ♫ 2 in Physics

i have a simply supported 'I' beam- 200x100x web=5 mm flange=7 mm and long = 3600 mm - what uniformly distributed load can it support?

2007-02-16 00:46:20 · 2 answers · asked by sonuphone 1 in Engineering

2007-02-16 00:43:46 · 1 answers · asked by zea mays 1 in Botany

Is it:
A: Uranus
B: Saturn
C: Mercury

2007-02-16 00:42:05 · 8 answers · asked by epistasis 1 in Astronomy & Space

I play runescape and I formulated a problem in math based from it. I know the answer but then I have to find a way to solve it using systems of linear equation in two variables because that is our current topic, which would be included in our test on monday. My problem is you need to smelt a peice of iron and 2 peices of coal to make steel. How of each should I use to make 500 peices of steel. Please explain it as detailed as possible my answer is 1000 peices of coals and 500 peices of iron but i just used my common sense.

2007-02-16 00:39:23 · 3 answers · asked by lingnienshin 2 in Mathematics

I have dark brown eyes,my wife has deep blue eyes and both my daughters have crystal clear blue eyes.Someone once told me that if one parent has brown eyes and the other has blue eyes then nine times out of ten-the kids will have brown eyes.I think they were talking nonsense but is there a determining genetic factor on eye colour?

2007-02-16 00:37:55 · 22 answers · asked by Anonymous in Biology

A particle of mass 50kg is placed on a ramp at 30 degrees, forces acting on it are Weight, Reaction and Friction, the weight (previously figured out is 490N, how can I calculate the component of W which acts down the slope?

2007-02-16 00:35:53 · 5 answers · asked by Anonymous in Physics

I would like to know if there is any way to fuse a human being's consciousness and subconsciousness together?Even if it is for a short amount of time.Also,I would like to know more about the subconsciousness.Thank you very much.

2007-02-16 00:32:40 · 1 answers · asked by Kenneth S 2 in Medicine

can you please give me samples problems about linear expansion, volume expansion and area expansion? together with the sample problems are the solutions of how'd you get the answer. thank you!

2007-02-16 00:29:14 · 1 answers · asked by jhaine 1 in Physics

2007-02-16 00:28:37 · 12 answers · asked by Anonymous in Zoology

Suzie (of mass 98 kg) is roller-blading down
the sidewalk going 40 miles per hour. She
notices a group of workers down the walkway
who have unexpectedly blocked her path, and
she makes a quick stop in 1.1 seconds.
What is Suzie's average acceleration?
Answer in units of m/s^2. Also, what force was exerted to stop her, and where did this force come from?

Okay, so for the first part I subtracted 40 from 0 (for initial and final velocity) and got -40. Then I divided by 2 to get 20. I divided it all by 1.1 and got an answer, but that answer is in mph/s. How do I convert it? Is that how I'm supposed to do it?
Then for the force I multiplied 98 by my answer for acceleration. I got an answer, but I know it's wrong because I didn't convert the last answer.
As far as the force that is stoping her, isn't it a combination of the friction of rollerskates, gravity, the friction of her against air, and the ground pushing up?

2007-02-16 00:27:27 · 4 answers · asked by Nikita R 2 in Physics

2007-02-16 00:27:10 · 6 answers · asked by Anonymous in Physics

a) If the length of a side of one square is x cm, what is the length of the side of the other square?

b) the sum of the areas is 65 cm^2. Find x

2007-02-16 00:26:12 · 6 answers · asked by Anonymous in Mathematics

Like satalites ( - )
Astroids ( + )
for the weight of our earth?

2007-02-16 00:25:20 · 8 answers · asked by hanibal 5 in Astronomy & Space

2007-02-16 00:24:25 · 5 answers · asked by Anonymous in Weather