Science & Mathematics - 16 February 2007

when a wheel spinning so fast then , if we look at that then we could notice that it is rotating in counter durection but comparatively very slowly . WHYYY??????????????

2007-02-16 20:34:21 · 8 answers · asked by Anonymous in Physics

I cannot grasp the concept of speed and time being relative to each other. Can anyone explain to me why exceeding the speed of light would make you move back in time? This theory seems wrong to me, someone please enlighten me.

2007-02-16 20:34:17 · 6 answers · asked by Aenima 2 in Physics

I read somewhere that there was an old myth that the Aryan people came from a certain planet in a certain constellation. does anybody know this story and which constellation they are said to have come from?
what about the other races on earth?

2007-02-16 20:31:49 · 5 answers · asked by Coco32 1 in Astronomy & Space

A hammer action (in a horizontal plane) acts as a propulsion force to a turntable.

The hammer weighing 1Kg depresses a push rod through 1 cms in 0.144 secs, which in turn is attached to a gear “A”. Gear A has a 1” radius and the push rod is attached to gear A at a radius of 0.9”. Gear A is mounted on the same shaft as gear “B” which has a 0.5” radius that in turn engages another gear “C”, which has a 3.5” radius attached to a turntable. (Assume a frictionless environment.)

Questions:
How much work does the hammer do per impulse?
What force is exerted on the push rod?
What force is exerted on gear C?

Many thanks

2007-02-16 20:28:46 · 2 answers · asked by Willy 1 in Physics

2007-02-16 20:27:03 · 12 answers · asked by Stef 4 in Physics

why? why did they have to kill the poor creatures?

2007-02-16 20:26:22 · 3 answers · asked by aki_3092 1 in Biology

with circuit diagram

2007-02-16 20:22:38 · 4 answers · asked by Anitha P 1 in Engineering

2007-02-16 20:18:37 · 6 answers · asked by jane04 1 in Physics

which country allows to donate a heart while you are alive,and you are not sick or unheathy,you simply want to donate a heart as a compromise or should I say as a present.

2007-02-16 20:18:06 · 3 answers · asked by Anonymous in Medicine

2007-02-16 20:16:17 · 6 answers · asked by Anonymous in Earth Sciences & Geology

I read in a book written by Michael Crichton (Time line), that a proof or method of deteriming that parrell universes exists, is by splitting a photon of light. I realise the book is a fictional novel, but I know Michael Crichton, extensively researches his novels, beofer he publishes anything. Basically, if you take a beam of light, i.e. a tourch and shine it at a cardboard that has holes in it, and the cardboard is held a few inches in front of a white wall. the Photons of light split, such that a reflection is made on the white wall. However if you apply filiters to that light, to the extent that only 1 photon remains (i.e. it cannot be split any further) , the reflection (all be it a very faint one), still remains, indicating that the photon was indeed split (which would be impossible?). This refelction is the result of a parrell universes effect on this "world/universe".

My question is...Is the above statement correct, and why?

2007-02-16 20:05:55 · 4 answers · asked by prodigious70 1 in Physics

.
.
. IT looks like to the left<<
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I see this star formation (above) directly above me in the night sky every night around 8 pm.
It is only a vague recollection, but can you guess the constellation it might be?

2007-02-16 20:04:37 · 8 answers · asked by Coco32 1 in Astronomy & Space

answer fast

2007-02-16 20:03:29 · 8 answers · asked by Anonymous in Weather

The vertices of triangle ABC are A(2,-11),B(2,13) ,C(-12,1).Find the equation of AB.

2007-02-16 20:02:04 · 12 answers · asked by Smilie 2 in Mathematics

AN overpopulated planet can spell doom for the entire race .... eventually. Do medical advances like organ donors ...... reducing infant mortality ..... and does spending a lot of money on expensive procedures for the elderly to prolong their lives .... will all these things actually, eventually, hurt the quality of life for the human race ??

2007-02-16 19:58:11 · 2 answers · asked by burlingtony 2 in Medicine

A typical adult body contains 55 % water. If a person has a mass of 68.0 kg, how many pounds of water does she have in her body?

2007-02-16 19:55:06 · 4 answers · asked by orange_crush_05 6 in Chemistry

2007-02-16 19:44:35 · 11 answers · asked by nikesid 2 in Astronomy & Space

This is not a school assignment. I ask this question for fun. I want to know if my answer is right.

There are different higher officials in chess, it includes Rooks, Knights, Bishops, Queen and King. Each piece has its own way of capturing a piece of the oponent and for each movement is a relation. In relating to functions, can you consider the moves of a knight a function?

A bishop has higher ranks than a knight. Do you think that it is because of the probability that a bishop can capture more enemies than a knight?

2007-02-16 19:43:36 · 4 answers · asked by red scar 2 in Mathematics

Why does 10^0 equal 1

Should it not equal 0?

2007-02-16 19:36:35 · 8 answers · asked by Peter H 1 in Mathematics

WHAT IS DOMAIN DEFINITION OF FUNCTION?

2007-02-16 19:35:49 · 7 answers · asked by hitmast3r 1 in Mathematics

2007-02-16 19:33:13 · 15 answers · asked by hitmast3r 1 in Mathematics

2007-02-16 19:32:14 · 5 answers · asked by Neel 1 in Physics

Can someone be hired to do a thirdparty inspection there ?

2007-02-16 19:30:33 · 2 answers · asked by makino_bt 2 in Engineering

2007-02-16 19:30:08 · 4 answers · asked by michael 1 in Chemistry

What's after? Can you list to 18 numeral in order?

2007-02-16 19:28:47 · 15 answers · asked by Anonymous in Mathematics

what are the different results, if we superpose carrier and signal in terms of ASK, FSK and PSK..??

ASK = Amplitude Shift Keying
FSK = Frequency Shift Keying
PSK = Phase Shift Keying

2007-02-16 19:26:04 · 4 answers · asked by nUssie.. 2 in Engineering

2007-02-16 19:22:44 · 1 answers · asked by truthseeker 1 in Physics

Short activities

2007-02-16 19:21:50 · 3 answers · asked by taanya k 1 in Chemistry

Explain: Freezing point depression boiling point depression boiling point elevation osmotic pressure with equation

thank you.

2007-02-16 19:17:29 · 2 answers · asked by -three31one- 1 in Chemistry

Where must the object be placed to have a virtual erect image?

Where must the object be placed in order to have an inverted image on the opposite side of the lens to the object?


Imagine a diagram, but I truly am stumped on these two...one could be focal point, but I am guessing, any help out there?

2007-02-16 19:17:12 · 1 answers · asked by James D 1 in Engineering