Science & Mathematics - 1 July 2007

So everyone knows that the formula of the point-slope form is (Y-Y1)=m(X-X1) in which that (m) is your slope, and (x,y) is your point. What do you do when your slope is a fraction?

Here's an example...

(2,6), m -2/3

Can anyone help? I'm good at math, but terrible at fractions....

2007-07-01 23:52:41 · 5 answers · asked by lilcreator 1 in Mathematics

speed in feet per second

2007-07-01 23:49:58 · 6 answers · asked by Rhoebie M 1 in Physics

how much additional money must be invested at an annual simple interest rate of 9% so that the total annual interest earned is 7.5% of the total investment.

explain the answer

2007-07-01 23:49:55 · 6 answers · asked by finny 2 in Mathematics

I have a 1-dimensional curve (e.g. Gaussian). What is a measure of its sharpness, i.e. whether the area under it is more concentrated around the center or more 'widespread'? I would like to have a universal measure which is independent of the exact shape.

2007-07-01 23:42:57 · 5 answers · asked by jmatejic 2 in Mathematics

1. what is the reason why Candela (cd) is used as a unit in luminous intensity?

2. which will provide greater efficiency, a 50watt tungsten filament bulb?or a 40watt flourescent lamp

tnx a lot!

2007-07-01 23:40:48 · 1 answers · asked by asker guy 2 in Physics

Determine the ff. a.)average speed b.)acceleration c.)distance

2007-07-01 23:26:30 · 8 answers · asked by Gravity34 1 in Astronomy & Space

No-one has managed to pass my remote viewing experiment, and no-one has managed to pass my telekinesis experiment.

The true believers will be relieved to know this is my third, and last, experiment. This time, on telepathy.

Every hour, on the hour, that I am awake, for the next 48 hours, I will think of a four-letter word beginning with "F". Just let me know what it is.
.

2007-07-01 23:26:26 · 24 answers · asked by tsr21 6 in Parapsychology

2007-07-01 23:23:57 · 12 answers · asked by KidW25 2 in Zoology

'If a tree falls in the forest and no one's there to hear it, does it make a sound?' QM's answer to that famous question seems to be 'No.' In QM the observer is an integral part of the system; observation creates reality out of a nebulous cloud of probability, Schroedinger's Cat being a classic example. Doesn't it seem much more likely that 'probability waves' aren't dependent on some arbitrary consciousness; the tree DOES make a sound, the cat IS alive or dead and all the other properties of matter exist indeppendent of an observer. It seems more like the equations of Quantum Mechanics describe the state of mind of an observer rather than the observed (or not) system, and it's human conceit that projects this onto the real world?

2007-07-01 23:23:04 · 8 answers · asked by AmigaJoe 3 in Physics

A train travel 650Km in 20hours.

2007-07-01 23:22:36 · 5 answers · asked by Gravity34 1 in Astronomy & Space

cuz dolphin are well smart they will detect them faster.

2007-07-01 23:21:03 · 11 answers · asked by Anonymous in Zoology

i wonder... okay, imagine that you are in an airtight room... which is made up of mirror then, you turn on the light and turn it off.... what do u think will happen? will the lights continue shine... or the room will turn dark... or any other possibility??? please... don't put any harsh word! thanks...

2007-07-01 23:17:32 · 4 answers · asked by kit 3 in Engineering

Some decade before a scientist explained why neutrino has momentum though it doesn't have mass. But recent fact shows that neutrino DOES HAVE MASS

2007-07-01 23:16:44 · 7 answers · asked by Steve Andrew M 1 in Physics

i heard something like that what does you reckon

2007-07-01 23:10:25 · 8 answers · asked by Anonymous in Zoology

2007-07-01 23:09:27 · 9 answers · asked by Anonymous in Astronomy & Space

I have read in an article that black hole can attract things inside it including light!I wonder where those things go,and is there any end inside the hole?

2007-07-01 22:52:48 · 11 answers · asked by syaheed 2 in Astronomy & Space

2007-07-01 22:52:36 · 7 answers · asked by Anonymous in Astronomy & Space

2007-07-01 22:52:13 · 6 answers · asked by Anonymous in Other - Science

2007-07-01 22:48:37 · 4 answers · asked by imran qureshi parasia m.p.india 1 in Chemistry

2007-07-01 22:48:26 · 2 answers · asked by Anonymous in Medicine

There is a 10" FRP line for condenser retrun in our plant has given a way for multiple crack at one particular area and started leaking.This line is one meter below ground level and pressure not exceeds 3 bar.This has to be repaired on line otherwise will lead to plant shut down. The amount of leak is around 5 ltr per minitue.

2007-07-01 22:47:32 · 4 answers · asked by somu s 1 in Engineering

2007-07-01 22:38:28 · 3 answers · asked by pat 1 in Mathematics

what are the factors that lead to low thermal conductivity , hence insulation ??

2007-07-01 22:37:15 · 2 answers · asked by Anonymous in Engineering

i need it now...

2007-07-01 22:33:04 · 7 answers · asked by me@yourservice 1 in Medicine

I would love to know what was there before the universe formed, if it started from a big bang, then what was there before? if matter started from the explosion then that means anti matter was there before, how did that get there?

2007-07-01 22:32:31 · 9 answers · asked by steve c 1 in Astronomy & Space

There is 2 bottle.(3 litres and 5 litres). U have to fill 4 litre in any one of that bottles.How u do this

2007-07-01 22:24:55 · 2 answers · asked by ezhil 2 in Engineering

2007-07-01 22:23:08 · 4 answers · asked by wilbert c 1 in Mathematics

Right,

A few Q&A recently on evolution have prompted me to ask:
How many people on this site believe in Neo-Darwinian Evolution?
You don't have to post any *reasons* why you do or do not believe. I think the standard reasons are probably "taken as read" - I'm just interested, and am going to post this on both the Science and Religion fora.
I'll also post the results once this question's time is up.

2007-07-01 22:20:53 · 19 answers · asked by gribbling 7 in Biology

I just like the idea of being a human shooting star going across a clear summer night sky, so peeps can say "Oh look, there goes Elric"

2007-07-01 22:19:37 · 7 answers · asked by Anonymous in Astronomy & Space

I'm sending a couch to a friend and need to know how much it weighs for the people shipping it. I'm not interested in average weights or estimates online (especially not from a moving company that gets more if they say it's heavier).

There are ways to do this - formulas... weighing parts and multiplying... it's just so hard to search for this online.

Thanks!

2007-07-01 22:18:00 · 9 answers · asked by akathepurplecow 5 in Other - Science