Science & Mathematics - 23 August 2007

I found out before my grandfather passed away, he had around a three hour conversation about Principia Mathematica...I'm now curious to look into it. I've already looked it up on search engines, so I was wondering if any of you have an explaination on what it is and what it contains...thanks :)

2007-08-23 04:27:57 · 3 answers · asked by Anonymous in Mathematics

2007-08-23 04:27:30 · 2 answers · asked by Anonymous in Chemistry

I know its a reaction to stress and getting tired but why do we yawn? How does it form?

2007-08-23 04:25:34 · 9 answers · asked by Anonymous in Biology

2007-08-23 04:24:49 · 10 answers · asked by lala 1 in Weather

For example, sucrose is a non-reducing sugar & maltose is a reducing sugar. Please explain.

2007-08-23 04:23:40 · 12 answers · asked by Kristada 2 in Chemistry

2007-08-23 04:20:57 · 3 answers · asked by sokrates 4 in Biology

2007-08-23 04:20:45 · 3 answers · asked by Liz 1 in Biology

f(x)= 6^x log_2 (x)

f'(x)=?

2007-08-23 04:15:44 · 3 answers · asked by Mackenzie W 1 in Mathematics

2007-08-23 04:14:51 · 10 answers · asked by Ash 2 in Astronomy & Space

I never thought about this question until my lab manual asked it. Because I was having an experiment and use the H2SO4 to disslove the FeSO4 and use titration to calculate the moles of the unknown FeSO4. I think it has something to do with the SO4(2-) thing because they both have it. Tell me if it is ringt or wrong. Futhermore, the lab manual asked for two explaination. Please DO tell me where the data you refrence or cited. Monash university is really stric about it. Thank you!!!

By the way, am I considered plagirism or cheating if I ask homework like this?

2007-08-23 04:14:45 · 3 answers · asked by chen wei neng 1 in Chemistry

By culture i mean will there be a place for traditional observances of other peoples beliefs, Native American ceremonial dances or other peoples personal belief systems, and for art i mean do you think there will be a place for composers, painters, sculpters and poets?

2007-08-23 04:14:11 · 7 answers · asked by Anonymous in Astronomy & Space

... Cause earthquakes and volcano eruptions, tides and alterations in animal behaviour?

Tell me what you think and why.

2007-08-23 04:10:03 · 20 answers · asked by Anonymous in Astronomy & Space

2007-08-23 04:09:40 · 6 answers · asked by Ms Ghost 6 in Geography

2007-08-23 04:04:01 · 2 answers · asked by monica f 1 in Other - Science

I was just wondering... I have a graphing calculator... but are there functions on a scientific that chemists prefer? I'm just starting college.. and I want to make sure I have the right materials. Also, do chemistry professors dislike people using graphing calculators on tests?

2007-08-23 03:59:54 · 8 answers · asked by Me! 2 in Chemistry

application in cement industry?

2007-08-23 03:58:12 · 4 answers · asked by parisa 2 in Chemistry

or other unexplained phenomenon?

2007-08-23 03:57:45 · 12 answers · asked by Anonymous in Paranormal Phenomena

why we are going for it?
please explain this concept

2007-08-23 03:56:12 · 7 answers · asked by Meera 2 in Engineering

if two class interval are given :
15.5 - 18.5 and 19.5 - 22.5

18.6 belongs to which class interval?

2007-08-23 03:55:41 · 8 answers · asked by conan edogawa 1 in Mathematics

I've been stargazing for a while now with a 7x50 Binoculars, and although it's better than naked-eye stargazing, still I don't really see much with them and then I live in London (UK), so as you can imagine light pollution and UK weather doesn't help much either. I want to buy a telescope but don't know how to choose a beginner one. A refractor, reflector or Newtonian? Which aperture, 6 inch (150 mm) or 8 inch (200 mm)? What about those computerized, "Go To" telescope? And are they expensive? Please explain. Thank you!

2007-08-23 03:54:31 · 5 answers · asked by Neko74 1 in Astronomy & Space

2007-08-23 03:53:42 · 9 answers · asked by CelticMoonGoddess 2 in Mathematics

2007-08-23 03:48:38 · 8 answers · asked by sh 1 in Mathematics

2007-08-23 03:44:15 · 4 answers · asked by karra s 1 in Chemistry

1 x 8 + 1 = 9
12 x 8 + 2 = 98
123 x 8 + 3 = 987
1234 x 8 + 4 = 9876
12345 x 8 + 5 = 98765
123456 x 8 + 6 = 987654
1234567 x 8 + 7 = 9876543
12345678 x 8 + 8 = 98765432
123456789 x 8 + 9 = 987654321

1 x 9 + 2 = 11
12 x 9 + 3 = 111
123 x 9 + 4 = 1111
1234 x 9 + 5 = 11111
12345 x 9 + 6 = 111111
123456 x 9 + 7 = 1111111
1234567 x 9 + 8 = 11111111
12345678 x 9 + 9 = 111111111
123456789 x 9 +10= 1111111111

9 x 9 + 7 = 88
98 x 9 + 6 = 888
987 x 9 + 5 = 8888
9876 x 9 + 4 = 88888
98765 x 9 + 3 = 888888
987654 x 9 + 2 = 8888888
9876543 x 9 + 1 = 88888888
98765432 x 9 + 0 = 888888888

Brilliant, isn't it? And look at this symmetry:

1 x 1 = 1
11 x 11 = 121
111 x 111 = 12321
1111 x 1111 = 1234321
11111 x 11111 = 123454321
111111 x 111111 = 12345654321
1111111 x 1111111 = 1234567654321
11111111 x 11111111 = 123456787654321
111111111 x 111111111=12345678987654321

Now, take a look at this...

101%

From a strictly mathematical viewpoint:

2007-08-23 03:44:03 · 8 answers · asked by Dana 3 in Mathematics

I have 2787 worms per 1 milliliter of 'slurry'. (yes, worms, little tiny ones) I need 50 worms per 200 microliters. Will someone else do the dilution to so I know I'm right? Best anwer to the first correct and understandable!

2007-08-23 03:41:29 · 3 answers · asked by Anonymous in Chemistry

1. The probability that a doctor correctly diagnosis a particular illness is 0.7. Given that the doctor makes an incorrect diagnosis the probability that the patient enters a law suit is 0.9.What is the probability that the doctor makes an incorrect diagnosis and the patient asues?

2. The probability that a married man watches a certain television show is 0.4 and the probability that a married woman watches the show is 0.5. The probability that a man watches the show,given that his wife does is 0.7.Find the probability that
a. a married couple watches the show
b. a wife watches the show given that her husband does
c. at least one person of amarried couple will watch the show

thanks for the help.....i'm really getting a hard tym with this course.....

2007-08-23 03:41:15 · 8 answers · asked by ice_cream_chico 1 in Mathematics

Can anybody explain the difference between yawning and sighing. Do they both serve the end purpose of allowing the body to intake more oxygen. Is sighing contagious like yawning? Is there a behavourial significance?

2007-08-23 03:39:25 · 3 answers · asked by Booms 2 in Biology

1) Why is limestone added to the blast furnace in the extraction of iron from haemalite?

2) Explain why Aluminium is more reactive than iron, but there is less corrosion of aluminium when exposed to air.

2007-08-23 03:34:18 · 3 answers · asked by Akilesh - Internet Undertaker 7 in Chemistry

73. What is the Ksp of a saturated solution of silver bromide, AgBr, when {Br-] = 7.1 x 10^-7M
a)5.0 x 10^-13
b) 7.1 x 10^-7
c) 1.4 x 10^-6
d) 8.4 x 10^-4

74. What is the pH of 0.010 M KOH solution?
a) 0.010
b) 2.00
c) 12.00
d) 13.99

76. Which represents the functional group for an organic acid?
a) -O-
b)-OH
c) -COO-
d)-COOH-

2007-08-23 03:33:40 · 2 answers · asked by ashley t 1 in Chemistry

2007-08-23 03:30:53 · 6 answers · asked by neha m 1 in Chemistry