Science & Mathematics - 27 January 2007

how would I determine which are not proportional.

2007-01-27 01:56:05 · 6 answers · asked by jdeyo05 1 in Mathematics

ive been doing wanting to do this experiment on corrosion so i finally am doing it and im trying to find out if density affects the corrosion rate??

2007-01-27 01:53:22 · 6 answers · asked by Anonymous in Physics

I'm doing a project on Mangroves which are located in Asia. Could someone tell me what exactly are mangroves and how they create an impact on nature (like climate changes, sea level etc)?

2007-01-27 01:51:27 · 3 answers · asked by tempo_tranquillo 2 in Botany

Something large,like Earth, we can measure the rate (speed) that the Earth is spinning.like one revelution takes aprox.24 hrs.In electrons,that are much smaller and faster,is there a way to measure the rotational speed.

2007-01-27 01:47:56 · 3 answers · asked by Anonymous in Physics

2007-01-27 01:46:51 · 2 answers · asked by luvnbluealwayz 1 in Engineering

2007-01-27 01:46:09 · 3 answers · asked by Anonymous in Engineering

anybody have any idea for a physics project for high school student...the project have to bring benefit to us..any idea plz...

2007-01-27 01:44:27 · 5 answers · asked by natasha 1 in Biology

Can someone PLEASE help me figure out a recipe for "small" salt crystals? (the ones that take only a few days)

2007-01-27 01:44:11 · 1 answers · asked by .BiteMe 5 in Chemistry

2007-01-27 01:39:40 · 6 answers · asked by Anonymous in Physics

I want to know that how much £1=$?

2007-01-27 01:37:50 · 12 answers · asked by reena p 1 in Mathematics

2007-01-27 01:33:31 · 9 answers · asked by Razieh S 1 in Chemistry

London detectives just reported that one teapot was highly radioactive weeks after Litvenenko's death. The Milennium Mayfair is a five-star hotel. You would think it would have been washed several times since.

2007-01-27 01:33:23 · 5 answers · asked by greydoc6 7 in Chemistry

on a homework it askes what the bending of light rays is called.

2007-01-27 01:30:56 · 13 answers · asked by nfbookworm16 2 in Physics

2007-01-27 01:30:39 · 4 answers · asked by pavan 1 in Physics

2007-01-27 01:28:05 · 19 answers · asked by pavan 1 in Physics

I mean, from what I understand, everything in the universe attracts everything else. But that means every tiny molecule... but does that mean every electron? An electron is spinning... i.e. moving very fast. So that must mean its gravitational centre is shifting as it orbits the atom. i.e. every other molecule in the universe is being attracted to a slightly different point as this electron moves in its orbit. If you multiply such a fiddly relationship for every single molecule in the universe... I just don't understand how there is enough room for that sort of complexity. Like, random electron A in one part of the universe, is actually related via gravity with random electon B. Multiply that by the number of electrons in the universe! Do things smaller than electrons have gravity? Quarks? How does a tiny little quark emit gravity!? Communicating with the entire universe!? Please explain!

2007-01-27 01:24:32 · 6 answers · asked by Steve C 1 in Physics

2007-01-27 01:23:21 · 6 answers · asked by avril 1 in Mathematics

2007-01-27 01:20:33 · 22 answers · asked by juststu777 1 in Earth Sciences & Geology

or Why are they taken as equal in general relativity?

2007-01-27 01:20:21 · 11 answers · asked by Anonymous in Physics

explain to me

2007-01-27 01:19:45 · 18 answers · asked by vince 17 1 in Zoology

2007-01-27 01:15:12 · 7 answers · asked by Anonymous in Engineering

2007-01-27 01:14:32 · 3 answers · asked by cornell c 1 in Physics

The equation for thermal conductivity has a term (change in temperature). If this thermal conductivity is expressed in farenheit, how do I change it to degree celsius?
If it is from kelvin to degree celsius or vice versa, it is the same for both since this is a temperature difference.
However, why is this not the same for farenheit to degree celsius or vice versa?

Can anyone help me this? Thanks a lot.

2007-01-27 01:13:48 · 6 answers · asked by sky_blue 1 in Physics

2007-01-27 01:13:44 · 3 answers · asked by annaliese 1 in Botany

Will you find metabolites of dopamin, epinepherine, or norepinepherin - and what would they be?

2007-01-27 01:12:48 · 6 answers · asked by John P 1 in Medicine

15.If a = –5 and b = 2, evaluate 3a – 4b.







16.Use your calculator to evaluate the following expression if x = –2.57, y = 1.55, and z = –1.98. Round your answer to the nearest tenth.









17.List the like terms in the following group of terms.
–5t, –3st2, 3s2t, –7st2, –2st2, –5s2








18.Combine like terms.
2w – 3x – 8w
A)–w – 8x
B)–9w + x
C)–9wx
D)–6w – 3x








19.Divide.


A)m4n4
B)m4n3
C)m2n3
D)m2n4






20.Multiply.
a4b2 ab3
A)a5b5
B)a4b5
C)ab6
D)ab5

2007-01-27 01:11:20 · 4 answers · asked by Dave 4 in Mathematics

I'm having a high school project about "Nanotechnology in Biology" & wanted to get vast info about the use of this new field of sience in Biology.

2007-01-27 01:10:09 · 3 answers · asked by Andromeda 1 in Biology

The electrical and magnetic properties of Mn perovskites are critically dependant on the Mn oxidation state.

2007-01-27 01:08:46 · 1 answers · asked by Student 1 in Chemistry

2007-01-27 01:08:29 · 8 answers · asked by Louise 2 in Chemistry

2007-01-27 01:06:39 · 3 answers · asked by graphyclub g 1 in Geography