Science & Mathematics - 19 December 2006

My daughter asked me and I have no idea. LOL!

2006-12-19 05:40:13 · 5 answers · asked by lilmama 4 in Biology

that food grade "poppy seeds" can cause a false positive for an illegal drug in a standard drug test?

2006-12-19 05:39:25 · 9 answers · asked by Mike M. 5 in Medicine

(a) Square root of 3
(b) 2 * square root of 3
(c) 4
(d) 4 * square root of 3
(e) 8

2006-12-19 05:38:55 · 6 answers · asked by yajman2004 2 in Mathematics

I plan on putting a home made rocket on a bicycle or sled. I'll use kerosene and nitrous oxide for fuel, but I don't know how to build the nozzle for the escaping gases........help? I'm hoping for speeds in excess of 300 mph.

2006-12-19 05:37:43 · 6 answers · asked by john S 1 in Engineering

2006-12-19 05:35:06 · 8 answers · asked by hepsi j 1 in Biology

describe these two reflections..

I can show this in the plane, but need to show it for 3 space..

2006-12-19 05:32:59 · 5 answers · asked by JAC 3 in Mathematics

I ask because, technically, everywhere is God's country, if you think about it.

2006-12-19 05:28:37 · 12 answers · asked by bullet_to_the_brain 4 in Geography

Or help of any kind on that matter?

2006-12-19 05:27:44 · 1 answers · asked by girl24gr 3 in Chemistry

Am am wondering whether mathematical thinking was developed in humans because of trade. If this is so, then money would have preceded geometry, the mathematicalisation of space, which I think was introduced by the greeks or eygyptians.

2006-12-19 05:24:02 · 6 answers · asked by jonny b 1 in Mathematics

2006-12-19 05:22:47 · 2 answers · asked by Anonymous in Engineering

-4b2/X * 2x5/B The answer is -8Bx4


The #2 and #5 are exponents just incase someone wondered.
Could someone spell this out for me? =)

2006-12-19 05:19:04 · 7 answers · asked by grem 3 in Mathematics

Consider a drop of water on a table. U cant find it after some time. Because it evaporates. But for water to evaporate at a pressure of 1 bar its temperature should increase to 100 degree centigrade. Then why did the water evaporate

2006-12-19 05:18:33 · 6 answers · asked by meghanath l 1 in Engineering

.....then the equinoxes and solstices would be the ideal globally applicable time-points to designate for a secular and rational division of the year instead of all the spurious half baked illogical religious festivals..yes?

2006-12-19 05:17:39 · 5 answers · asked by Anonymous in Astronomy & Space

One stays on earth, one goes on a journey at the speed of light for 2 years.
When he comes back, several years have passed away....???
Please explain with details....

2006-12-19 05:11:55 · 11 answers · asked by man_in_casual 2 in Astronomy & Space

I live in Iowa and I remember snow would always fall a few times before thanksgiving and by the time thanksgiving was here there was plenty of snow. For a good part of the winters snow would be more then a foot high and weather would be well below freezing.

But with in the past 5-8 years or so it seems like snow is just starting to fall less and less usually coming right before christmas. So far this year we have then maybe 1/2 inche of snow that lasted for about 24 hours and its been about 40-50 degrees out. So has anyone else around the country noticed a change in winter weather or maybe summer too that you could detail for us.

2006-12-19 05:11:55 · 9 answers · asked by kevins963 2 in Weather

2006-12-19 05:10:36 · 21 answers · asked by louisburg_27549 1 in Astronomy & Space

In Mountain Climbing?

2006-12-19 05:07:54 · 2 answers · asked by dondon 1 in Geography

Give me firstly a brief of its functions then its industrial appl..

2006-12-19 05:03:10 · 2 answers · asked by Dhruv 1 in Engineering

On either the science or discovery channel they said that due to global warming the fresh water trapped in ice caps will mix with the salt water of the oceans. This will cause the ocean currents, which distribute heat throughout the world, to stop completely. This will plunge the northern hemisphere into another ice age, and the only ones who would survive would need special protective clothing. What is this special protective clothing and where can I BUY SOME!?

2006-12-19 05:01:59 · 9 answers · asked by Anonymous in Weather

You learn in school that the sun is a ball of gas or a continuous nuclear furnace, yet many references speak of a "surface" ie. the temp on the surface of the sun...etc. Now recent images of the sun reveal volcanic activity? What gives?

2006-12-19 05:01:09 · 14 answers · asked by pishta 2 in Astronomy & Space

How many grams of Cdl can be theoretically produced by reaction between 10-g od Cd and 20-g of I2?
MM(Cd) = 112g/mol
MM(I2) = 254 g/mol
MM(Cdl) = 239 g/mol

the answer is 21, but how do you get that?
thanks

2006-12-19 04:55:58 · 3 answers · asked by Anonymous in Chemistry

2006-12-19 04:55:55 · 9 answers · asked by Anonymous in Mathematics

If two triangles are congruent, they are similar.
If two triangles are similar, the angles of one triangle are congruent to the corresponding angles of the other triangle.
Two triangles are similar if two angles of one triangle are congruent to two angles of the other triangle.
The corresponding sides of two similar triangles are proportional.

2006-12-19 04:55:00 · 6 answers · asked by Anonymous in Mathematics

What is the energy change for 2 H2 + )2 ----. 2 H20

H-H 436 kj/mol
H-O 467 jk/mol
O-O 146 kj/mol
O=O 498 kj/mol

can someone tell me how to go about doing this problem? the answer is suppose to be -498 kj/mol but im stuck on how to get it

2006-12-19 04:54:29 · 2 answers · asked by Anonymous in Chemistry

2006-12-19 04:54:02 · 2 answers · asked by Anonymous in Engineering

How many liters of a .2 M NaOH solution are required to completely react with 1.00 L of a 0.100 M solution of H2SO4 to produce sodium sulphate and water?

i know the answer, but how do i go about doing this question? thanks

2006-12-19 04:52:31 · 1 answers · asked by Anonymous in Chemistry

2006-12-19 04:44:48 · 7 answers · asked by Kunal 1 in Mathematics

2006-12-19 04:43:21 · 13 answers · asked by endlessgurl 2 in Astronomy & Space

I am thinking that if I add 50-100 gallons of liquid oxygen to the 2000 gallons of cold (35F) water in my skating rink, the temperature should drop at least 5 degrees and I can be skating in a few hours. But I am not chemist. Any thoughts?

2006-12-19 04:43:15 · 4 answers · asked by jonfrankel 2 in Chemistry

2006-12-19 04:43:10 · 4 answers · asked by Soumya 1 in Medicine