Science & Mathematics - 3 September 2006

it is a mystery

2006-09-03 01:47:25 · 35 answers · asked by bolla 3 in Mathematics

It is a common missconception that the high speed space shuttle gets hot b'coz of the air friction
Wrong...
actually the space objects compresses the front air and that's why the temp. of the underneath air raises (PV = MRT) and via convection it heats up the part of space object in contact!

2006-09-03 01:37:15 · 6 answers · asked by vivek j 1 in Engineering

some time ago i had a desire to find the above, but all i could find were pathetic dvds with clips that jumped from one thing to another.
what i actually want is one long section just of zooming deeper and deeper into the infinate detail of the mandelbrot set, of at least 20 minutes but ideally much longer.
either dvd for sale or internet clip would be fine.

2006-09-03 01:37:01 · 6 answers · asked by catweazle 5 in Mathematics

In a preceding question I asked if the mass missing from our Universe ("Dark matter") could be explained by the mass that is hidden in Black holes. Two relevant answers to my question stated that the mass present in Black holes is far too small to account for the missing matter. My question now is how do we know that the quantity of matter hidden in Black holes is relatively small. The early Universe formed a first generation of stars on average enormously heavy (up to 100 times the mass of our sun). Many of them may have clustered and then collapsed into enormous Black holes. If such Black holes would exist alone in empty space, having absorbed all matter around them, the only radiation coming from them would be Hawkins radiation, which I think would be impossible to detect on astronomical distances. Such giga Black holes would also show a very anomalous gravity pattern, but again if the Black hole is a loner in empty space, this pecular gravity field could not be observed by us.

2006-09-03 01:37:00 · 4 answers · asked by Anonymous in Astronomy & Space

it may be radioactive also.

2006-09-03 01:29:10 · 7 answers · asked by prongs05 1 in Chemistry

2006-09-03 01:27:24 · 1 answers · asked by jonamae_love_life 2 in Biology

2006-09-03 01:25:46 · 4 answers · asked by Anonymous in Physics

2006-09-03 01:21:00 · 9 answers · asked by SlicePro 1 in Weather

2006-09-03 01:14:30 · 7 answers · asked by sethivijaykumar 1 in Chemistry

If you can please answer this question:What colour is the flame when a "strike-back"occurs?

2006-09-03 01:08:48 · 6 answers · asked by Anonymous in Other - Science

No setting,just the stone...Thanks...Tom Science

2006-09-03 01:05:39 · 15 answers · asked by tom science 4 in Earth Sciences & Geology

apart from calcium sulphate, what specific ingredients. does it contain impurities like arsenic, lead or cadmium or mercury

2006-09-03 01:02:45 · 1 answers · asked by vikas2002 1 in Other - Science

...the escalators in shopping malls,airports only go down when people stand on them using their weight, and designed only to go down at a constant speed regardless of the number of people on them , also they could be fitted to generators which uses the weight to turn into electricity.

2006-09-03 01:00:58 · 18 answers · asked by wolfmettle 3 in Engineering

thank u guys iwanna know information and the name of the books
I have to read

2006-09-03 00:59:44 · 2 answers · asked by EROBO 1 in Engineering

2006-09-03 00:54:44 · 11 answers · asked by tom science 4 in Earth Sciences & Geology

2006-09-03 00:54:33 · 9 answers · asked by dundeeflower_2 1 in Zoology

2006-09-03 00:51:31 · 4 answers · asked by Davit H 1 in Earth Sciences & Geology

2006-09-03 00:47:16 · 3 answers · asked by tom science 4 in Earth Sciences & Geology

2006-09-03 00:44:17 · 4 answers · asked by prophetic_primal 1 in Chemistry

Note: This is only a genuine doubt. It has no resemblance or connection to my real life status. Also, only answer if u noe da answer. Please help me by not giving rubbish answers so as to earn a SINGLE POINT.

2006-09-03 00:39:49 · 8 answers · asked by Jack D 1 in Medicine

QUESTION: Mr Bowman sold a carriage for $240, and thereby cleared 1/8 of this amount; what per cent would he have gained if he had sold it for $280?

TEXTBOOK ANSWER: Mr Bowman cleared 1/8 of $240, or $30, and the carriage cost $240 - $30, or $210. If he had sold the carriage at $280, he would have gained $70 on £210 which are ¼ of the cost, or 25%.

Now I think this is wrong. I think the correct answer is 1/3 or $33 1/3 %. Although $70 is 25% of $280, that was not the original price. The original price was $210 so the gain was $70 on $210 which would be 1/3 or 33 1/3 %.

So have I caught the book out here? Who is right, me or the book?

Many thanks.

2006-09-03 00:34:52 · 5 answers · asked by paulmurphy42 1 in Mathematics

... in the last second before striking the ground level. What would be the height of the tower . Given that g=10 m/s square.


please help thanks

2006-09-03 00:32:35 · 4 answers · asked by Anonymous in Physics

i need a device

2006-09-03 00:32:28 · 3 answers · asked by cemilturan 1 in Chemistry

2006-09-03 00:28:19 · 1 answers · asked by denferr1618 1 in Other - Science

2006-09-03 00:24:12 · 10 answers · asked by double B 2 in Mathematics

2006-09-03 00:23:07 · 24 answers · asked by Chesh » 5 in Weather

2006-09-03 00:21:15 · 4 answers · asked by jhen_hidaka 1 in Mathematics

neglect the effect of rotation of the earth. suppose the earth suddenly stops attracting objects placed near its surface then????????what will be its effect on a person standing on the surface of the earth. it will
a) fly up b) slip along the surface
c)fly along a tangent to the earth's surface d) remain standing

answer is d) but tell me how?? can it be the right choice

2006-09-03 00:20:40 · 19 answers · asked by joy5122 1 in Physics

like for mosquitoes? in frequencies 20+ khz

2006-09-03 00:16:25 · 2 answers · asked by jan 1 in Physics

Does it have something to do with reactivity series?

2006-09-03 00:15:29 · 3 answers · asked by lol 1 in Chemistry