Science & Mathematics - 2 July 2007

I bought some aspirin when abroad fro myself and read the lablel with it in a moment of boredom.
It gives dosages for under 4's whilst the NHS book i was given when my daughter was born tells me explicitly i should not give aspirin to under 4's.
So who's right and who's wrong? Why do Europeans consider aspirin safe for under 4's and the UK does not?

2007-07-02 10:59:11 · 17 answers · asked by Part Time Cynic 7 in Medicine

I was looking at Venus through a 100 mm diameter refractor. She smiled at me with a silver crescent, but the rest of her was hidden behind a bluish veil !.

Was the appearance due to the incidence of Sun's rays only on her visible part or was it due to part of the rays falling on her being reflecting off (the blue surface above the cresent) in a direction away from my line of sight?.

My location was 6 Deg. 48 Min. 34.43 Sec. North and 79 Deg. 58 Min.30.96 sec. East. Date was Sunday, July 1st. Local Time 20.30, (GMT +5.5), Colombo, Sri Lanka.

Can someone please explain?

2007-07-02 10:54:44 · 1 answers · asked by Eskay d 1 in Astronomy & Space

Than how do they fly?

2007-07-02 10:43:53 · 10 answers · asked by charlie a 2 in Zoology

If I use a 1mL sample diluted with DI water, add three drops of Potassium Chromate, then titrate with 0.282 N AgNO3 to a rusty red color. How do I calculate mg/L Chlorides from my sample volume and particular normality titrant? I hope someone understands this question....

2007-07-02 10:41:43 · 3 answers · asked by ehad46 2 in Chemistry

2007-07-02 10:38:55 · 10 answers · asked by Anonymous in Earth Sciences & Geology

2007-07-02 10:37:53 · 6 answers · asked by jobees 6 in Zoology

Assuming that the capacitor is fully charged from an external source, and then connected to a dead or near dead battery, will the battery receive some charge? Assuming the battery is rechargable.

2007-07-02 10:35:15 · 7 answers · asked by techmaster7b 2 in Engineering

solving system of linear equations.

1.y=2x+1
3x-4y=1

2.5x-6y=23
x=6-3y

3.x+y=1
2x-3y=8

4.x+2y=3
2x+y=5

5.y-3x=5
3(x+1)=y-2

6.2y=1-4x
2x+y=0

7.2y=6-3x
1/2x+1/3y=3

8.2x=10-5y
1/5x+1/2y=1

9.x+y=200
0.05x+0.06y=10.50

10.2x+y=300
1/2x+1/3y=80

11.y=3x+1
y=3x-7

12.2x+y=9
4x+2y=10

13.1/2x-1/3y=12
1/4x-1/2y=1

14. 0.05x+0.1y=10
0.06x+0.2y=16



thank youuuu =)

2007-07-02 10:33:47 · 4 answers · asked by LumpiaEATER ! 2 in Mathematics

2007-07-02 10:30:22 · 8 answers · asked by Anonymous in Mathematics

I do, sometimes.

2007-07-02 10:28:38 · 42 answers · asked by Mr. Researcher 1 in Parapsychology

Which of the following will have a focus at (–2, 0) and a vertex at (5, 0)? Explain your choice.
A. Does a=25 and b=4?
B. Does a=25 and b=21?
C. Does a=4 and b=21?
D. Does a=21 and b=25?

I keep getting that a should equal 14 and I have no idea how to go about finding b. Can someone help please? Thanks!

2007-07-02 10:26:42 · 1 answers · asked by Anonymous in Mathematics

The deuterium nucleus starts out with a kinetic energy of 1.88e-13 joules, and the proton starts out with a kinetic energy of 3.77e-13 joules. The radius of a proton is 0.9e-15 m; assume that if the particles touch, the distance between their centers will be twice that. What will be the total kinetic energy of both particles an instant before they touch?
K1H + K2H ? joules

2007-07-02 10:26:20 · 3 answers · asked by Ashley 2 in Physics

2007-07-02 10:25:07 · 20 answers · asked by Anonymous in Chemistry

A small 0.1 mm droplet of mercury, or solid ball of the same
size and density made of gold-copper alloy?

2007-07-02 10:21:05 · 6 answers · asked by Alexander 6 in Physics

1. http://i209.photobucket.com/albums/bb248/pielover757/furlings13.jpg

2. http://i209.photobucket.com/albums/bb248/pielover757/furlings14.jpg

3. http://i209.photobucket.com/albums/bb248/pielover757/furlings15.jpg

4. http://i209.photobucket.com/albums/bb248/pielover757/furlings16.jpg

2007-07-02 10:15:17 · 3 answers · asked by Asgardfanofpie 1 in Mathematics

I am a radio hobbiest and i keep track of stations i hear far away i live in nj. and i have heard stations just sitting out side or in my home with my AM/FM radio from Texas to the Turks and caicos and up in Canada but, what is the farest distance that a AM radio station has ever traveled. thanks :)

2007-07-02 10:14:20 · 6 answers · asked by Anonymous in Geography

is it the same?

2007-07-02 10:12:19 · 15 answers · asked by Anonymous in Astronomy & Space

A-parenchyma
B-collenchyma
C-schlerenchyma
D-guard

2007-07-02 10:04:23 · 3 answers · asked by Anonymous in Botany

I Was hanging out with my friends joking around with our paintball guns and one of my friends happen to have a lazer scope attached to his gun i ask to see it i was messing with and i notice it reached from my backyard to the house across the street i also read that a lazer is a device that emits light through a specific mechanism and it was already dark enough to see the moon i pointed the lazer towards the moon and thought to myself if it was possible that the lazer could of reached that far?

2007-07-02 10:02:38 · 12 answers · asked by Anonymous in Astronomy & Space

it is unbelievable how the US is using american tax dollars to pay teachers to teach evolution is truth when everything points to a creator. also how can people take the carbon 14 dating system for truth. scientists watched a seal die once. let it sit for 30 days and then preformed a carbon 14 test and it said it was thousands of years old. people use ur brains.

2007-07-02 10:02:10 · 25 answers · asked by jonhughton 1 in Biology

science science science science mathematics mathematics

2007-07-02 09:58:03 · 11 answers · asked by Anonymous in Chemistry

If rhode island is 1,214 sq. miles and texas is 261,797 sq. miles, how many times bigger is texas?

2007-07-02 09:55:27 · 18 answers · asked by Conor 3 in Geography

2007-07-02 09:55:15 · 5 answers · asked by Grinning Football plinny younger 7 in Zoology

2007-07-02 09:54:07 · 23 answers · asked by Thank Me Later... 4 in Other - Science

2007-07-02 09:49:51 · 7 answers · asked by Lost 2 in Chemistry

2007-07-02 09:47:08 · 21 answers · asked by aaron.lattin 2 in Other - Science

2007-07-02 09:46:42 · 6 answers · asked by hakanak86 1 in Mathematics

A solution which is formed by combining 200 mL of 0.15M HCl with 300 mL of 0.09M of NaOH has a [OH-] concentration of? PLease help I absolutely forgot how to do it. Thank you.

2007-07-02 09:46:23 · 2 answers · asked by ira s 1 in Chemistry

1.
If the outside of the flask is not dried after vaporizing the liquid, will the unknown's calculated molecular
weight is too high or too low? Explain?
2.
Suppose the atmospheric pressure is assumed to be 1 atmosphere instead of its actual value. How wills this
error affects the molecular weight of the unknown? Explain.
3.
If the vapor's volume is assumed to be 125 mL instead of the measured volume, what is the percent error of
the unknown's calculated molecular weight? Show your work.
4.
If the entire unknown does not vaporize in the 125 mL Erlenmeyer flask, will the reported molecular weight
be too high or low? Explain.

5. Solve the following problems.
a) How many moles of gas are contained in 890.0 mL at 21.0 °C and 750.0 mm Hg pressure?
b) What volume will 1.27 moles of helium gas occupy at STP?
c) At what temperature will 0.654 moles of neon gas occupy 12.30 liters at 1.95 atmospheres?

2007-07-02 09:46:22 · 2 answers · asked by Anonymous in Chemistry

PLease simplify fully this equation, showing ur steps and not talking in sophisticated language
((((1000 / n) / 2) / (tan((360/n) / 2))) x (1000/n)) / 2) x n

please help - thanx

2007-07-02 09:45:25 · 4 answers · asked by Anonymous in Mathematics