Science & Mathematics - 30 September 2006

A 65kg person is in an elevator accelerating upwards at the rate of 2 m/s/s. if the person was standing on a scale in the elevator, what would the scale's reading show?

2006-09-30 02:55:09 · 4 answers · asked by tiger 1 in Physics

how to find the area of polygon if we have the vertisces of it in cartesian coordinate with matlab.

2006-09-30 02:53:09 · 4 answers · asked by Anonymous in Engineering

And many people gave the acronym Roy G Biv as a way to remember. My question is: Does anyone know any OTHER acronyms or memory tricks for remembering the colors of the rainbow? I aks because as a child I was taught a different memory trick and now I can remember the colors but not the memory trick to remember them by! I do remember this though: It was an entire sentence and each word started with a corresponding letter....
Any help?

2006-09-30 02:52:28 · 5 answers · asked by leavemealonestalker 6 in Weather

2006-09-30 02:38:44 · 15 answers · asked by shee ram 1 in Astronomy & Space

2006-09-30 02:36:50 · 3 answers · asked by gujarpc 1 in Zoology

im not sure if it has to do with the element it contains or from ground state to excited state of an atom.

DONT TELL ME THE ANSWER IS ELECTRICITY.

2006-09-30 02:34:43 · 6 answers · asked by Anonymous in Chemistry

2006-09-30 02:32:15 · 5 answers · asked by shee ram 1 in Physics

How do you put a gene into a virus and work it so that you can control how much it reproduces?

2006-09-30 02:28:56 · 2 answers · asked by Garrett F 1 in Other - Science

I know the earth spins approx once a day but does the moon?

2006-09-30 02:28:27 · 25 answers · asked by misery 1 in Astronomy & Space

How many solutions are there to the equation,

where x1, x2, x3 are integers such that

x1 >= 1, x2 >= 2, x3 >= 1,

Any help and step by step procedure welcome, if you don't know don't answe. Thank you.

2006-09-30 02:25:51 · 6 answers · asked by Anonymous in Mathematics

Find the antiderivative of f(x) = -x^2 - e^(-x)

Please show all work!

2006-09-30 02:25:28 · 2 answers · asked by Anonymous in Mathematics

so we used a light microscope to examine a Elodea leaf, i focused on a cell and observed it for 15 minutes. no cell streaming took place, why is that?

2006-09-30 02:24:31 · 2 answers · asked by sandy 1 in Biology

1)Out of a certain amount,3 $ are left if each child is given18 $.If the same number of children are given a dollar less,11 $ are left.Find the amount.

2006-09-30 02:23:16 · 5 answers · asked by Anonymous in Mathematics

How does a specially shaped heavy weight roll up a pair of gentle inclined tracks without any applied force to it? Is it something to do with distribution of centre of mass and special tracks built for it?

It's definitely not an illusion!

2006-09-30 02:18:02 · 6 answers · asked by how1andwhy2 2 in Engineering

why must the satellite's orbit lie in the plane of the equator?

2006-09-30 02:14:54 · 4 answers · asked by Anonymous in Physics

Which discipline requires greater mental toughness?

2006-09-30 02:12:48 · 4 answers · asked by button 1 in Physics

what happens to the gastro intestinal (GI) tract of multi-cellular organisms when they feed on the most basic food source (i.e. amino acids, lipids, glucose etc)? theoretically, Is the length of the GI tract reduced? would the stomach and some other parts still be present through thousands of years? or would the organism evolve to something of lesser GI length? i mean, if the organism feeds on the most basic components, wouldn't the stomach and other parts be non-functional?

2006-09-30 02:09:33 · 2 answers · asked by abstemious_entity 4 in Biology

'speed of light/sound(flash/beep) does not depends on the speed of the
source'.
Does a continous flow of light depends on the speed of the source?

for light waves
When a photon has high frequency it has lower wavelength. Does that means
that the velocity of light waves never changes with different frequencies or
wavelengths?

for sound waves
what about doppler effect?

2006-09-30 02:01:34 · 6 answers · asked by piti 2 in Physics

What if, parralel universes where execlty the same but difent times? Then you make a teloportation devise form here (U1) to somthing 80 years later (U2) and 80 years eirlyer (U3) then you can go to U3 and kill your grandad, but, you from U2 have killed you grandad whilst their grandad is being killed by you else so on and you, you 2 and you3 would be dead and have never come back in time or killed everyone. Whitch means you are alive and kill your grandad. Whitch means you're dead an- e.c.t

2006-09-30 02:00:40 · 4 answers · asked by me 2 in Physics

2006-09-30 01:54:40 · 3 answers · asked by piti 2 in Physics

Instead off puttin a flag off a country why not a flag off the world as we are all one or is it like cuz were in diffrent countrys were not the same?

2006-09-30 01:54:06 · 11 answers · asked by John 1 in Astronomy & Space

As such, Rutherford's atomic model was discarded bcoz he wasnt able to explain how electrons do not lose energy.Even Bohr's atomic model cannot explain exactly how they get energy to keep on revolving around nucleus. This question has been annoying me since a long time. I need quick and detailed answers to this question please.

2006-09-30 01:53:42 · 2 answers · asked by Urvashi B 1 in Chemistry

2006-09-30 01:44:12 · 4 answers · asked by Anonymous in Biology

2006-09-30 01:44:04 · 23 answers · asked by Chem Boy!! 2 in Medicine

2006-09-30 01:37:42 · 3 answers · asked by Anonymous in Engineering

e.g 14,9,16
3,7,12
4,2,0,1,-2
pleasecould you tell me how to do this

2006-09-30 01:37:03 · 3 answers · asked by Anonymous in Mathematics

2006-09-30 01:31:39 · 7 answers · asked by eltouro 2 in Earth Sciences & Geology

2006-09-30 01:26:59 · 8 answers · asked by praveen m 1 in Astronomy & Space

Saturday



In a trapezoid ABCD with segment AB parallel to segment CD, the diagonals intersect at point E. the area of the triangle ABE is 32, and the area of the triangle CDE is 50. Find the area of the trapezoid.

2006-09-30 01:17:22 · 4 answers · asked by Sasha 2 in Mathematics

2006-09-30 01:17:09 · 11 answers · asked by Anonymous in Other - Science