Science & Mathematics - 3 November 2007

my math teacher told me if i get this write then he'll give me extra points :
he said if i can give him da stepz of drawing an inscribed circle in a scanlene traingle , not onlly to draw it but also to explain how did u drew this figure , any help plzz !!!

2007-11-03 05:08:48 · 3 answers · asked by beni 1 in Mathematics

say your at point a, you set out to go to point b, in between you there is a vacuum. why does it take time to get to point b? if there is nothing between two points than there is nothing to cross, right? why does it take time and energy to pass through nothing?


a--------------------------b

2007-11-03 05:06:25 · 6 answers · asked by fleabis 2 in Physics

someone please help me with these math problems on percentages.
1) By giving a discount of 30%, a trader makes a profit of 20%. If the trader had given a discount of $400, he would have incurred a loss of 20%. Find the marked price(price before discount) of the article.
2) A bag contains balls of 3 different colors-red,blue and green. The number of blue balls is 12.5% lesser than the number of red balls and 40% more than the number of green balls. By what percent is the sum of the blue and green balls less than the sum of the red and blue balls?

I want the explanation if possible.. just the answer wont help.
Thanks in advance.

2007-11-03 05:05:21 · 3 answers · asked by Anonymous in Mathematics

The Hippocratic Oath is an oath traditionally taken by physicians pertaining to the ethical practice of medicine

2007-11-03 05:03:36 · 5 answers · asked by Ginger 6 in Medicine

2007-11-03 04:57:34 · 14 answers · asked by G.xi 1 in Astronomy & Space

100cm^3 of vinegar at 15 degrees centigrade was made upto 250cm^3 of solution with distilled water. 25.0cm^3 of this solution required 16.9cm^3 of 0.5M NaOH for neutralisation. Assuming that all the acidity of vinegar is caused by ethanoic acid, CH3COOH, calculate the percentage by mass of the acid in the original vinegar. The density of vinegar at 15 degree centigrade is 1.02g cm^-3.

2007-11-03 04:57:05 · 1 answers · asked by ur having a right laugh innit 2 in Chemistry

2007-11-03 04:56:19 · 2 answers · asked by Anonymous in Biology

Mary Occhino on Sirius stars told me I would be.. can you give me any details..? thanks!

also, do you see any major changes.. I have a feeling things are about to really be shaken up

2007-11-03 04:55:16 · 7 answers · asked by Anonymous in Paranormal Phenomena

3x^2-10x-10=0

I get x=4.13 and x=-0.81 when I enter this in my calculator
I think this problem requires you simpifly the radical once you input the values in the quadratic formula but I am unsure how to do that in this question to get the answer the calculator shows.

2007-11-03 04:55:04 · 4 answers · asked by Anonymous in Mathematics

Steam at 100'C is passed over 1000g of ice at 0'C.After sometime 600 g of ice at 0'C is left and 450g of water at 0'C is formed.Calculate the specific latent heat of vapourisation of steam.

Given: Specific latent heat of ice is 336J/g and specific heat capacity of water is 4.2 J/g/K

2007-11-03 04:48:18 · 2 answers · asked by Jewel 1 in Physics

Solve by completing the square:

2x^2 - 7x -15 = 0

Thanks!

2007-11-03 04:39:59 · 7 answers · asked by John 1 in Mathematics

2007-11-03 04:36:44 · 6 answers · asked by Macbeth 1 in Chemistry

Please answer if you don't know the correct answer than please don't answer!

Thank you!

2007-11-03 04:36:06 · 11 answers · asked by *~*Purr-fectNYCGrl*~* 3 in Geography

the fox polulation in a certain region has a relative growth rate of 7 percent per year. it is estimated that the population in the year 2000 was 29300.
find a function that models the population t years after 2000 (t=0 for 2000)_____________________________
use that function to estimate the fox population in the year 2008.
this answer is in integer._______________________

2007-11-03 04:35:40 · 6 answers · asked by star baller 360 5 in Mathematics

Why is mains electricity AC (Alternative current)?

2007-11-03 04:35:24 · 7 answers · asked by <3 4 in Physics

If you went somewhere, would you get there fast enough to see yourself arrive?

2007-11-03 04:31:53 · 5 answers · asked by vote4pedro0529 1 in Physics

In a photoelectric experiment, it is found that a stopping potential of 1.00 V is needed to stop all the electrons when incident light of wavelength 260 nm is used and 2.30 V is needed for light of wavelength 207 nm. From these data, determine Planck's constant and the work function of the metal.

2007-11-03 04:27:23 · 2 answers · asked by szydzo 1 in Physics

2007-11-03 04:22:14 · 13 answers · asked by Anonymous in Weather

2007-11-03 04:17:40 · 10 answers · asked by ? 2 in Geography

What is the impedance?

2007-11-03 04:09:41 · 1 answers · asked by STUDY 3 in Physics

i mean, the way you look, does anyone exist like this on this planet??? is it possible? if yes how true is it?

2007-11-03 04:09:05 · 8 answers · asked by DON 2 in Astronomy & Space

Why momentum is conserved in nuclear reaction?

2007-11-03 04:06:05 · 4 answers · asked by ice i 1 in Physics

2007-11-03 04:02:32 · 2 answers · asked by nicole 1 in Astronomy & Space

I had read this question on a quiz on my morning paper, but i wasnt able to follow-up the answer the next morning. could someone answers this, please?

Heres the question:

Is a sailboat being pulled off or being pushed by the wind?

2007-11-03 04:01:38 · 3 answers · asked by Prett 1 in Physics

..that OA+OB+OC = OAm + OBm + OCm
where OA,OB,OC,OAm,OBm,OCm are vectors.
and O is an arbitrary point.

How should you draw this, and then how to show it?

2007-11-03 03:52:56 · 7 answers · asked by droids_are_beautiful 1 in Mathematics

2007-11-03 03:51:35 · 4 answers · asked by Anonymous in Zoology

factor the quadratic expression completely and find the roots of the expression.

1. 135x^2 - 222x + 91

2. 6x^2 - 42x + 72

Completing the square. Find the roots of the quadratic equation.

3. x^2 - 3x = 0

2007-11-03 03:42:13 · 5 answers · asked by Hope C 1 in Mathematics

too much coffee makes you feel energetic and euphoric just like cocaine but why is one legal and the other is not?

2007-11-03 03:39:28 · 6 answers · asked by Anonymous in Medicine

Recently, the first Malaysian Astronaut has conducted an experiment on which a spinning top will keep spinning in the space station...

I am kinda curious on this experiment..
My question is, Since there is air inside the space station, there should be air resistance acting on the top, right?? so, the top should stop moving after a while, isn't it??
If the top keeps spinning due to MICROGRAVITY, how?? Please explain why a top will keep spinning and even picks up speed on its own under microgravity condition... in brief, how does microgravity influence the non stop motion of the spinning top??

Thank you

2007-11-03 03:39:08 · 2 answers · asked by Fiddley 1 in Physics

As we know (most I hope) Universe is a specific enviroment... When I think about space shuttle using rockets then I think - *Fish in the air or bird in the water... and its not even flying fish or pinguin*... Fully adapted to fly in space mother ship would cut costs of transporting (if using centrifugal or other kind of propulusion)... Part of taking off from planet would be turned just to sending cargo and equipment in smaller and less weighing shuttles... The only one problem is that it takes huge effort at beggining to build such thing (piece by piece like orbital station)... but after making it we will have like in life - costs will be turned back.... I am just asking what they are doing in their *secret* work... Lets say... I am a bit... hungry for effects... Thanks for any info from the start...

2007-11-03 03:36:39 · 1 answers · asked by Robert M Mrok (Gloom) 4 in Astronomy & Space