Science & Mathematics - 7 July 2007

Do you have a feeling you know something you should share? something that seems real like a dream, a thought, an idea that something will soon happen? What is to come in our future?

2007-07-07 20:30:42 · 22 answers · asked by Stroopwafel 2 in Parapsychology

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why are rainbows shaped as a semi circle?

2007-07-07 20:30:00 · 11 answers · asked by Anonymous in Weather

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Can i replace grid transformer 11/33 kV star/delta by 11/33 KV delta/star transformer.?

2007-07-07 20:17:48 · 6 answers · asked by Upendra 1 in Engineering

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while lying on the beach......?

a man (lying down) wachtes the sun set. he starts a stop watch as soon as the sun disapperas. he then stands (height of his eyes from ground is 1.70m) and stops the watch when the sun disapperas again. the time elapsed on the watch is 11.1s. what is the radius of earth?

2007-07-07 20:12:35 · 7 answers · asked by Secret L 1 in Physics

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Find the A, B and C angles in a triangle in which the following equation holds.?

cosA cosB + sinA sinB sinC=1

Please show the details.

2007-07-07 20:12:09 · 4 answers · asked by Amir 1 in Mathematics

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what city has the most noise pollution?

I have a bet going with a buddy that it's New York. There's $50 on the line.

2007-07-07 20:10:56 · 6 answers · asked by williamtgoz 1 in Earth Sciences & Geology

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why we need to placing the cover completely on top of the crucible after heating?

water of hydration(Hydrated salt)

2007-07-07 20:08:51 · 2 answers · asked by ystan n 1 in Chemistry

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Are there too many umbrellas in Australia?

I believe I've just found the solution to Australia's water problems.
Everybody knows that it won't rain if you've got your umbrella on you.
I put it to you that Australia may simply be dangerously saturated by umbrellas, and that it therefore isn't raining.
What do you think?
Nobel Prize, maybe?

2007-07-07 20:01:09 · 7 answers · asked by Tahini Classic 7 in Weather

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difference between the simple interest and the compound interest?

The difference between the simple interest and the compound interest accrued in two years on a certain sum at a certain rate of interest is Rs 80 . If the simple interest for the second year is Rs 1000 , find the sum .

(1)Rs 10000
(2)Rs 12000
(3)Rs 12500
(4)Rs 15000

what it means ".....If the simple interest for the second year is Rs 1000...."

it says in second year the interest is Rs 1000.
does it means in 2 years 1000+1000 rs = 2000 Rs interest ?

2007-07-07 19:57:14 · 2 answers · asked by Anonymous in Mathematics

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who is Thomas Edison ?

2007-07-07 19:54:12 · 6 answers · asked by junior 1 in Other - Science

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How do I determine "Prevailing Wind"?

How do I Determine the Prevailing Wind on a small area 4-5 ACcers?

2007-07-07 19:46:02 · 2 answers · asked by Dissonance 2 in Earth Sciences & Geology

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Can somebody explain what is "pair-production" when referring to energy being converted into mass.?

2007-07-07 19:42:05 · 3 answers · asked by anothernickname 1 in Astronomy & Space

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what difficulty maybe found in using the flame test?

2007-07-07 19:37:46 · 3 answers · asked by john ruffy t 1 in Chemistry

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Maths Qn On Quadratic Equations and Inequalities?

The roots fo the quadratic equation 16x^2 + 7x + 4 = 0 are α^2 and β^2 . Find

(i) a quadratic equation whose roots are 1/α^2 and 1/β^2 ,

(ii) two distinct quadratic equations whose roots are α and β .

2007-07-07 19:35:12 · 2 answers · asked by icydollie xD 1 in Mathematics

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When you run water out of your bath, it swirls anti-clockwise south and clock-wise north of the equator.?

When water flows from your bath, the direction it twirls is different in the Southern hemisphere to that in the northern hemisphere, why is that?

2007-07-07 19:32:08 · 9 answers · asked by Peter V 5 in Physics

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What is E.M.F.?

I'm doing something to do with batteries and was curious to find out what E.M.F. is. Is it voltage?

2007-07-07 19:26:38 · 3 answers · asked by Anthony 4 in Chemistry

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why capacitors are used as filters?

2007-07-07 19:21:04 · 5 answers · asked by Anonymous in Engineering

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answer this?

Add three vectors a,b,c each having magnitude of 100 unit and inclined to the x-axis at angles 45 degree,135 degree, 315 degree

2007-07-07 19:15:36 · 6 answers · asked by john 1 in Physics

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who is the father of ancient and modern geometry?

2007-07-07 19:08:00 · 10 answers · asked by ajay s 1 in Mathematics

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How did we get on earth?

Really, I dont want awnsers about god.....I cant belive that I need to get REAL awnsers that you can prove......belive me Im fine with people that belive in adam and eve and god put us here........But I need awnsers that I can prove N E one can prove. awnser if you can.

2007-07-07 19:06:38 · 27 answers · asked by ♥Lulu- IS BACK♥ 4 in Astronomy & Space

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simple one for problem solvers. Using two circle circumferences, with...?

one circumference has 100 one digit numbers, the other circumference has 1000 1 digit numbers( the circumferences are of different radii) how many two digit numbers do you arrive at if you rotate the circumference with 1000 1 digit # (stopping at each #) also if you rotate the crcumference w/100 one digit #'s

2007-07-07 19:06:12 · 5 answers · asked by Book of Changes 3 in Mathematics

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