Science & Mathematics - 7 August 2006

my nephew asked me to explain how to reduce fractions to the lowest terms, can some one explain it to me first. i compeletely forgot i must be setting in with early alzheimers. my mind is blown unless some one refreshes me . from a shamed thanks........

2006-08-07 19:22:54 · 11 answers · asked by debbigeri 3 in Mathematics

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Is it correct to use the unit Pascal (Pa) for both fluid pressure and Stress in solids? Reference would be ok?

2006-08-07 19:18:17 · 4 answers · asked by SAREK 3 in Engineering

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When does spring season begins in USA?

2006-08-07 19:16:58 · 7 answers · asked by kvs 6 in Geography

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I thought galaxies had names describing the way they look or scientific names?

that only scientists understand? So what's with the name Andromeda? I know the name itself is from myth, but aren't mythological names ascribed to planets?

2006-08-07 19:15:59 · 8 answers · asked by rebekkah hot as the sun 7 in Astronomy & Space

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Why isn't the number 11 pronounced onety one?

2006-08-07 19:15:23 · 11 answers · asked by 007james bond 3 in Mathematics

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Has anybody developed an Airborne Fish Finder, mounted on the belly of an aircraft?

1. Can such Airborne Fish Finder can direct fishing boats on the ground to a specific location?
2. Do different types of fishes actually have some kind of spectral emission or radiation that can be detected using such aerial payload?
3. Can such aerial payload build up an electronic data base on fishes in a particular geography, and then try to compare known signatures everytime it detects a signature?
4. Would such signature be known as a species specific frequency, signature, emission or anything else, I mean technically?
5. If such a payload does exist, can it be effective airborne alone, or does it have to "shakehand" with a water based SONAR to get better accuracy?
6. Can such a payload give information regarding the species, speed of travelling, direction, depth, approximate school size?

2006-08-07 19:11:41 · 1 answers · asked by Question man 1 in Zoology

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170 years of mistake in Lenz's law?

This is not regarding about experiment, so it is not required. but if you need prove, very simple. Just think of a motionless ball being thrown into a pool of air current, how does the ball react? Does ball rotate 'oppose' to the direction of air current that contact (or exert higher pressure) to that of the ball surface first? No, right?
This concept applies to all physical concepts including magnetic induction too.
And so, actually if you study Fleming's RHR carefully, you'll realise it itself is already proved that 'opposes' in Lenz's Law of Magnetic Induction is wrong. And 'maintain' or 'hold' is more correct.

Above is the 1st step, 2nd step using Fleming's RHR will prove the mistake.

Just simply imagine a coin-shape magnet of 2 poles taking half a circle each, next using a cross-sectional wire going one complete round the magnet, and think how does the induction occur using RHR.
If you can understand fully, then you'll agree that 'opposes' is wrong.

Interesting?

2006-08-07 19:11:28 · 2 answers · asked by Kotami 1 in Physics

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i want to know all aspect about bacteriology test in blood bank.?

objective, procedure, result, reagent and anything that use to it.

2006-08-07 19:05:43 · 2 answers · asked by izwa 1 in Biology

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Atmospheric reentry?

Would an object with large surface area and low volume like a fether or a baloon be subject to atmospheric reentry heating to the same exstent as for example a rock or similarly dense objects?

2006-08-07 19:02:45 · 7 answers · asked by kent_thoresen 2 in Astronomy & Space

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where can I find a list of products that contains mutagens?

2006-08-07 18:53:48 · 3 answers · asked by pazitive 1 in Medicine

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how do i get my daughter's attention and interest in her studies?

2006-08-07 18:52:22 · 2 answers · asked by Antonio, Jr. T 1 in Geography

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what's pancreatitis?what are its causes?

2006-08-07 18:50:19 · 6 answers · asked by fullmental 2 in Medicine

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Is the winter of 2006 going to be colder than normal?

With such a warm winter in 2005, and such a hot summer in 2006. What is in store for us this winter?

2006-08-07 18:44:44 · 14 answers · asked by drivertruckmoss 4 in Weather

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Physics help needed?

1)
(a) What is the angular momentum of a figure skater spinning (with arms in close to her body) at 2.0 rev/s, assuming her to be a uniform cylinder with a height of 1.5 m, a radius of 12 cm, and a mass of 55 kg.
kg*m^2/s
(b) How much torque is required to slow her to a stop in 5.0 s, assuming she does not move her arms?
m*N
2)A uniform stick 1.0 m long with a total mass of 300 g is pivoted at its center. A 2.5 g bullet is shot through the stick midway between the pivot and one end . The bullet approaches at 250 m/s and leaves at 160 m/s. With what angular speed is the stick spinning after the collision?
rad/s

2006-08-07 18:40:22 · 1 answers · asked by Anonymous in Physics

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what is the definition of IMPURITY??

i have a ceminar on that..
so in introduction i have to describe that..
pls tell me if u know?

2006-08-07 18:37:55 · 9 answers · asked by Raju.K.M 5 in Chemistry

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100................?

lets make it 100 answers

2006-08-07 18:36:16 · 18 answers · asked by Anonymous in Mathematics

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Who is the founder of yourcity/town?

2006-08-07 18:35:55 · 4 answers · asked by pushuda 1 in Geography

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i want measure the scl2 specific gravity at 20°c.....can u tell me to measure without any error..??

2006-08-07 18:28:42 · 2 answers · asked by Raju.K.M 5 in Physics

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170 years of mistake in Lenz's law?

If somebody found there is a mistake in Lenz's law, then I believe there will be new laws appeared in magnetism.

2006-08-07 18:27:23 · 7 answers · asked by Kotami 1 in Physics

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pls tell me to measure the specific gravity..without any errror...??

2006-08-07 18:27:07 · 7 answers · asked by Raju.K.M 5 in Chemistry

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Why so many mushrooms grow after thunderstorm?

2006-08-07 18:25:46 · 3 answers · asked by yanix_123 1 in Botany

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can biomimiery affect our own evolutio?

2006-08-07 18:22:08 · 2 answers · asked by michele t 1 in Biology

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What is two plus two dude?

2006-08-07 18:21:08 · 39 answers · asked by Anonymous in Mathematics

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170 years of mistake in Lenz's law?

Thanks to all answered my question. Lenz's Law does not affect our daily life till today but, only that Lenz's Law explained only what is being seen, not the actual behaviour on the induction takes place.
Aurthor D has mentioned the Lenz's Law and the word 'opposes', this is the key word in the law and this is more applicable for incoming magnetic field, how about leaving magnetic field?
[The circuit inducess a current such that the produced magetic field tends to maintain (or hold) the same as the leaving magnetic field]
'maintain' or 'hold' here means following the same magnetic pole as the leaving field, don't you think this a contradiction with 'opposes'?
Last year, I took about 6 months kept on going arround this law and found the contradiction or mistake/error within. If you are interested, send your email address to: amane@singnet.com.sg.
I'll send you the full explanation; bit long though. In it, it also proves the incompleteness of Fleming's LHR & RHR as well.

2006-08-07 18:19:37 · 2 answers · asked by Kotami 1 in Physics

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Do animals also do that?

Do animals such as gorillas, chimps or monkeys practice jacking off as well?

2006-08-07 18:16:50 · 14 answers · asked by Sleuth! 3 in Zoology