Science & Mathematics - 18 December 2007

180(10^8)/ 2(10^4)

2007-12-18 01:39:59 · 5 answers · asked by Anonymous in Mathematics

Simplify (4x3/2x^2)^-4

2007-12-18 01:38:26 · 4 answers · asked by Anonymous in Mathematics

2007-12-18 01:32:00 · 32 answers · asked by Anonymous in Astronomy & Space

complete physic explanation please...

2007-12-18 01:29:39 · 3 answers · asked by Anonymous in Physics

...water, inside and outisde the gas collecting tube, are the same. Temperature is 17 degrees celsius. Barometric pressure is 720.0 mmHg. Convert the volume to that of dry gas at Standard temp and pressure (STP).

the answer is 21.8 mL but can someone explain please?
THanks

2007-12-18 01:22:06 · 3 answers · asked by Anonymous in Chemistry

Which of the following statements are CORRECT?

1.The atomic radii of transition metals decrease initially, then increase as one moves from left to right across a period of the periodic table.

2.The atomic radii of the period 6 transition metals are approximately 25% larger than the atomic radii of the period 5 transition metals.

3.The densities of the period 5 transition metals are greater than those from either the period 4 or period 6 transition metals.

a.1 only
b.2 only
c.3 only
d.1 and 2
e.1, 2, and 3

2007-12-18 01:17:20 · 1 answers · asked by Anonymous in Chemistry

2007-12-18 01:14:04 · 12 answers · asked by Anonymous in Astronomy & Space

I have played with FPGA's a little .... I have done small digial circuits in Verilog or VHDL also. One thing that bothers me still and I have not been able to find concrete examples or a pathway to follow is Timing.

I don't know how to use various constarints and how to make designs time-efficient

Do reply or give any references/ links as to how I should proceed.

2007-12-18 01:13:26 · 2 answers · asked by M Yasin 1 in Engineering

Karen, David, Jenny, George, and Sam are in a band. They need to choose a guitarist, a piano player, and a drums player.
a) Make a tree of the possible choices for these 3 positions. (if possible)
b) In how many ways can the 3 positions be chosen?
c) What is the probability that Jenny is chosen to play the piano?

2007-12-18 01:13:00 · 1 answers · asked by Anonymous in Mathematics

hi

i'm tryna work out how to do modular arithmetic, lets say I have

a = 0.5 mod(5)

how can I calculate what a is?

thx

2007-12-18 01:05:17 · 2 answers · asked by Anonymous in Mathematics

2007-12-18 01:05:05 · 8 answers · asked by PETER M 1 in Mathematics

2007-12-18 01:04:19 · 13 answers · asked by love4music 1 in Mathematics

Yes we do.

But say if a mosquito or cockroach are about to be extinct, would we take it seriously? Surely we don't like these insects so much, so would we care if they are extinct or not?

2007-12-18 01:00:25 · 11 answers · asked by BMW M5 3 in Zoology

1. (NH4)3PO4


2. Na2SO3


3. HNO2


4. N2O5

2007-12-18 00:57:56 · 2 answers · asked by Anonymous in Chemistry

2007-12-18 00:57:53 · 30 answers · asked by Anonymous in Mathematics

Distinguish the difference between phenotype and genotype, along with an example.

2007-12-18 00:54:03 · 2 answers · asked by K Rose 3 in Biology

10,000 meters of snow in Canada, colder winter then 2006's winter, strong winds and snow storms. So much for global warming?

2007-12-18 00:47:11 · 7 answers · asked by Anonymous in Weather

Harmful or beneficial?

2007-12-18 00:44:49 · 1 answers · asked by Chris 2 in Chemistry

2007-12-18 00:43:29 · 4 answers · asked by asa3013 2 in Astronomy & Space

2007-12-18 00:41:08 · 3 answers · asked by asa3013 2 in Astronomy & Space

are they trying to tell us this was the space race the russians were fools they lost all there gold us yanks were smart sent them broke trying to keep up with the Joneses no one can live in space what do you think.

2007-12-18 00:34:36 · 8 answers · asked by david p 3 in Astronomy & Space

thank you for your help again!

2007-12-18 00:34:33 · 6 answers · asked by safa s 1 in Chemistry

For example, when we give blood... the blood we see is red.

The syringe has that little device that sucks the blood through a vacuum, right? Then there shouldn't be any oxygen in the syringe... then the blood in the syringe should be blue...

2007-12-18 00:33:03 · 8 answers · asked by TheBigBam 2 in Medicine

Iv'e only been taking amitriptyline for a week now, however it's making me very tired, groggy, moody, dizzy etc.

Im 15 and an insomniac with manic depression (bipolar), and my doc tld me to take 25mg a nite to help me sleep etc.
However, iv'e noticed quite a few changes in myself;
- im tired constantly, and i fall asleep in class.
- During class, if there is noise it makes me 'trip out' and also 'phase out'
- i'm finding consentrating much harder than ever before
-i keep forgetting things
- when i stand up i have to sit back down because i feel dizzy
- my appetite has largely increased.
plus many other things...

Just wondering if anyone knew if these are normal side effects, or if there is something else that may be triggering the symptoms. Also how much is safe to take?...if someone accidently takes more than they are supposed to, how much of amitriptyline would be fatal to a human??


cheers

2007-12-18 00:31:29 · 28 answers · asked by Anonymous in Medicine

I would like to know about polymer department research and which is the best

2007-12-18 00:27:09 · 2 answers · asked by Shahin H 1 in Chemistry

2007-12-18 00:26:10 · 17 answers · asked by Anonymous in Mathematics

I know this is stupid but how come a battery cannot light gor example a household bulb?

And another question. What does a higher current do to a bulb and what does a higher voltage do to a bulb e.g brightness?

What type of bulb would a 6V battery light?

Thanks. Electricity bugs me.

2007-12-18 00:25:43 · 8 answers · asked by alanjb 1 in Physics

what is the main source for harmonics generation

2007-12-18 00:25:37 · 6 answers · asked by sravanti 1 in Engineering

2007-12-18 00:24:07 · 17 answers · asked by charanboy 2 in Astronomy & Space

2007-12-18 00:17:42 · 7 answers · asked by tryme 1 in Astronomy & Space