Science & Mathematics - 19 July 2006

1 ⤊

some curious sums ,?

99x99 = 9801= 9+8+0+1=18
99x199 = 19701=1+9+7+0+1=18
99x299 = 29601=2+9+6+0+1=18
99x399 = 39501=3+9+5+0+1=18
99x499 = 49401=4+9+4+0+1=18
99x599 = 59301=5+9+3+0+1=18
99x699 = 69201=6+9+2+0+1=18
99x799 = 79101=7+9+1+0+1=18
99x899 = 89001=8+9+0+0+1=18

2006-07-19 22:44:37 · 8 answers · asked by thinktank 1 in Mathematics

3 ⤊

can you use an abacus?

was it hard to learn?

2006-07-19 22:38:03 · 11 answers · asked by Anonymous in Mathematics

4 ⤊

what is : HiOAg^+4?

Riddle

2006-07-19 22:37:43 · 3 answers · asked by kelsarhu 1 in Chemistry

0 ⤊

where can i find a good job for a retired maintenance engineer who has thorough knowledge in all matters?

•27 years of service (1978-2005) as an electrical engineer in The Dubai International Airport
•Well Skilled and updated in areas of lightings, maintenance of HV & LV substations, switch-gears, conveyers, elevators, escalators, pumping houses ( sewage and potable water ), HVAC equipments – Air handling units, split AC units, Refrigerators, Chillers, Chilled water circulating systems and associated controls.
•Work also included estimation and execution of medium sized In-house projects.

2006-07-19 22:35:16 · 2 answers · asked by molu 1 in Engineering

0 ⤊

what is the only number which is not at all use full but can create miracles?

2006-07-19 22:29:09 · 9 answers · asked by Anonymous in Mathematics

6 ⤊

An idiot's guide to thunder?

After last night's spectacular thunder and lightening, can anyone explain IN SIMPLE TERMS PLEASE(!) what causes the light and the noise. So I can explain it to my 3 year old!

2006-07-19 22:19:14 · 45 answers · asked by Roxy 6 in Weather

3 ⤊

What are clouds made of, and how are they made?

2006-07-19 22:10:28 · 20 answers · asked by eandsuk 2 in Weather

2 ⤊

What is this?

I was walking along the beach and came upon this. I'm guessing it's an egg sac for something. It is roughly 8"X4"X1"" in size. What "something" did it come from?

Here's the link to the picture of it.

http://img142.imageshack.us/img142/5007/sthisau3.jpg

2006-07-19 22:07:11 · 10 answers · asked by Elbert 7 in Zoology

0 ⤊

Study of heat transfer?

When you talk about convection, radiation, conduction; heat transfer and how heat behaves; like in thunderstorm formation, evaporation of heat through sweat and inversion layers; this is a type of study on heat physics.

What is the study known as, and where can I obtain, highly sophisticated scientific information on such?

Sabre

2006-07-19 22:03:31 · 8 answers · asked by Anonymous in Physics

0 ⤊

y does there creates a fog on windows & glasses when its rainin???

2006-07-19 21:58:22 · 4 answers · asked by ???????? 2 in Physics

0 ⤊

Why does it only get hotter still?

Hello

When I open the doors and the temperature outside is colder than inside by about 2*C, it gets hotter inside.
When I shut the door, it also gets hotter and at a faster rate.
But this is happening when there is no sun shining into the house, no heating on, no cooking, no baths run and nothing else evidently giving heat.

How does the heat get there? how can I stop it?

Sabretooth

2006-07-19 21:57:30 · 3 answers · asked by Anonymous in Physics

0 ⤊

Is there a solution (A, B) to the equation sigma(A^2)/A^2 = sigma(B^2)/B^2, where A < B?

sigma(N) = sum of all of the positive divisors of N, including 1 and N itself.

2006-07-19 21:54:03 · 3 answers · asked by JoseABDris 2 in Mathematics

0 ⤊

discuss linear geometry versus bent geometry of nitrosyl ligand considering hybridization of nitrogen?

question is from inorganic chemistry

2006-07-19 21:42:32 · 1 answers · asked by Anonymous in Chemistry

0 ⤊

what is formed when you add sodium chloride to water?

2006-07-19 21:39:44 · 16 answers · asked by beibi anghell 1 in Chemistry

6 ⤊

can anybody tell me about Uranus?

2006-07-19 21:36:24 · 13 answers · asked by nellie 3 in Astronomy & Space

1 ⤊

take a number......................?

Follow these steps
(a) take any number
(b)multiply it by 2
(c)add 8 to the total you have
(d)divide the total you have by 2
(e)subtract the first number you took in step(a) from the total
(f) isn't the answer =4
QUESTION: how did i come to know the answer?

2006-07-19 21:32:50 · 12 answers · asked by Omar 1 in Mathematics

0 ⤊

what are the applications of touch bell(switch)?

i have one electronic project i.e. to make touch bell/button/switch.It has one copper plate when it is pused the ckt switches on and loud speaker makes noise at o/p which has 80 ohm and 500 mW ratings.Pls give me answer in detail and as early as possible.thank u.

2006-07-19 21:32:41 · 2 answers · asked by maulik 1 in Engineering

0 ⤊

after heating the sulfur-iron filing, does the substances undergo any changes in their properties?

2006-07-19 21:30:59 · 4 answers · asked by beibi anghell 1 in Chemistry

0 ⤊

what causes the change in the temperature of boiling water..?

2006-07-19 21:27:42 · 9 answers · asked by beibi anghell 1 in Chemistry

0 ⤊

explain formation of closed 3C-2e B-H-B bond and 3C-2e B-B-B bond in higher boranes in inorganic chemistry?

2006-07-19 21:25:06 · 2 answers · asked by Anonymous in Chemistry

1 ⤊

What according to you is the most important innovation/invention in the last ten years?

Why do u think so and also tell me the year if u know

2006-07-19 21:23:33 · 11 answers · asked by mithu 4 in Other - Science

0 ⤊

explain how following complexes obey EAN rule Fe2(CO)9and Co4(CO)12 in inorganic chemistry?

2006-07-19 21:14:15 · 1 answers · asked by Anonymous in Chemistry

0 ⤊

If a gay man rubbed Ben-Gay all over himself, would he become straight?

2006-07-19 21:10:06 · 16 answers · asked by Anonymous in Medicine

1 ⤊

1 + 1 = what?

2006-07-19 21:09:25 · 61 answers · asked by hihihi 1 in Mathematics

2 ⤊

What does Pluto (principle of extreme and fatality) in harmony with Medium Coeli (principle of repute) cause?

2006-07-19 21:08:14 · 7 answers · asked by Anonymous in Astronomy & Space

0 ⤊

How long does it take for the life cycle of a fly, from egg to grub?

2006-07-19 21:07:18 · 3 answers · asked by blukat 1 in Biology

0 ⤊

How many angles would a regular polygon have if each exterior angle measures 5°?

How many angles would a regular polygon have if each exterior angle measures 5°?

Give support to your answer

2006-07-19 21:03:58 · 10 answers · asked by Zman 1 in Mathematics

0 ⤊

It is possible for the exterior angles of a regular polygon to measure 30°?

It is possible for the exterior angles of a regular polygon to measure 30°?

Give support to you answer

2006-07-19 21:03:15 · 3 answers · asked by Zman 1 in Mathematics

0 ⤊

It is possible for the interior angles of a regular polygon to measure 145°?

It is possible for the interior angles of a regular polygon to measure 145°?

Give support to your answer

2006-07-19 21:02:30 · 6 answers · asked by Zman 1 in Mathematics

4 ⤊

Do some people attract mosquitoes more than others? Me?

I don't know why, but it seems that mosquitoes bite me more than others! When i am with a group of friends, only me is bitten.. Lol, do i attract mosquitoes more or what?

2006-07-19 21:01:33 · 16 answers · asked by a V a 4 in Biology