Science & Mathematics - 22 September 2007

2007-09-22 23:37:26 · 12 answers · asked by Seraj 1 in Weather

As you know, a ring laser can measure rotation speed when it rotates around own axis (perpendicular to own's plane).
This kind of device can detect rotation speed of the Earth. But, for measure this speed, this device is placed paralel to the ground, (please see this pages:
http://www.ringlaser.org.nz/content/about_us.php
http://www.ringlaser.org.nz/content/gross_ring_facility.php)
Why the ring laser is paralel to the ground, when is suppose to be perpendicular to Earth's rotation axis when measure rotation of the Earth? What should measure then a ring laser when is positioned perpendicular to Earth's rotation axis?

2007-09-22 23:30:46 · 3 answers · asked by AFA 1 in Physics

2007-09-22 23:29:27 · 2 answers · asked by angeliki c 1 in Engineering

and geological composition in any region ? Like , what minerals could be mined in any given region ?

2007-09-22 23:25:25 · 4 answers · asked by proteusmirabilus 4 in Earth Sciences & Geology

In the following case, the set of vectors {v1, · · · , vn} forms an orthonormal basis for the corresponding Euclidean vector space Rn.
Find an expression for the given vector w in terms of this basis.

n = 2
v1 = | (1/ √2) (1/ √2) |^T
v2 = | (1/ √2) (-1/ √2) |^T
w = | 4 9 |^T

Thanks for all the help, I'm really stuck on this one!

2007-09-22 23:05:32 · 2 answers · asked by Anonymous in Mathematics

1 divided by (2-root 3)

sorry I didn't make my last question clear

show the workings out please

2007-09-22 22:53:19 · 8 answers · asked by Anonymous in Mathematics

2007-09-22 22:52:35 · 13 answers · asked by SHAW M 1 in Physics

2007-09-22 22:40:45 · 4 answers · asked by abyy 1 in Earth Sciences & Geology

Your client is receiving Theorlair in 100 mg. The drug is available in a syrup containing 80 mg/15mL. The client should receive _________________mL per dose?

Thank you for taking the time to help me best answer will be getting a perfect 10.

2007-09-22 22:25:35 · 4 answers · asked by Anonymous in Medicine

2007-09-22 22:17:04 · 2 answers · asked by Haider 1 in Physics

2007-09-22 22:13:27 · 5 answers · asked by farnush a 1 in Chemistry

2007-09-22 22:00:03 · 5 answers · asked by nenz 1 in Medicine

I think it is m^-3 x m^3??
If so I think they cancel each other out
however if this is right would my final answer be m or 0?

2007-09-22 21:58:24 · 4 answers · asked by Anonymous in Other - Science

2007-09-22 21:56:44 · 3 answers · asked by Anonymous in Chemistry

2007-09-22 21:52:36 · 3 answers · asked by Anonymous in Chemistry

Something to do with the electricity supply or the mobile phone system perhaps. I can feel it in my nervous system...

This is a serious question. Thanks :-)

2007-09-22 21:52:34 · 8 answers · asked by 2kool4u 5 in Physics

2007-09-22 21:39:06 · 12 answers · asked by Anonymous in Biology

I am doing a physics lab and included are these two questions but I'm not positive I've done my calculations correctly.

First question is: If a 2.50kg physics book is dropped from rest at a height of 1.50m, how much time would it take the book to hit the ground? Assume no air resistance.

Second question is: If a 2.50kg physics book is dropped with an initial velocity of 10.0m/s from a height of 1.50m, how much time would it take the book to hit the ground. Assume no air resistance.

My calculated answer for the first questions was .55 seconds and for the second question .16 seconds.

If anyone can work these and let me know if I've done this correctly I would appreciate it very much. If my answers are in fact incorrect if you can put down your calculations that would be a big help so I can see what I am doing wrong.

Thanks to anyone who can help.

2007-09-22 20:43:48 · 2 answers · asked by doubtful 2 in Physics

Please explain procedure.

2007-09-22 20:38:24 · 3 answers · asked by Free the monkey in you! 3 in Mathematics

The fact that the spelling is far from phonetic - the same combinations of letters can stand for totally different words, like the "ough" in "tough", "though", "drought", etc.

2007-09-22 20:26:18 · 8 answers · asked by Anonymous in Physics

Styrene has 92.26% of Carbon and 7.74% of Hydrogen. Further experimentation determines that the molecular weight of this compound is 78.11 grams per mole. What is the molecular formula of styrene?

2007-09-22 20:17:47 · 2 answers · asked by Mango 1 in Chemistry

thank you for repling my question..... xD

2007-09-22 19:57:28 · 10 answers · asked by Faye 1 in Earth Sciences & Geology

I need help.
my algebra teacher didnt explain this
very well and so i need the answer to this
thank you so much

2007-09-22 19:44:52 · 3 answers · asked by Anonymous in Mathematics

2007-09-22 19:39:48 · 6 answers · asked by Anonymous in Earth Sciences & Geology

2007-09-22 19:36:51 · 2 answers · asked by catherine_mae12 2 in Mathematics

If y = (x - 5)/2
then does y^2 = (x^2 - 25)/4
or is it y^2 = (x^2 + 25)/4

is the 25 positive or negative?

thanks in advance

2007-09-22 19:35:52 · 2 answers · asked by Anonymous in Mathematics

2007-09-22 19:34:23 · 2 answers · asked by Mastermind 1 in Geography

85 = 13.06x - 1.9x2

x2 means "x" squared.

2007-09-22 19:08:11 · 4 answers · asked by Fly Away with Me Love 1 in Mathematics

2007-09-22 19:05:24 · 14 answers · asked by Anonymous in Paranormal Phenomena

9=a^2+ 2a+1

how do I get a?

tell me how i solve dis.. step-by-step

THANKS!!

2007-09-22 18:55:30 · 9 answers · asked by jusdenise 3 in Mathematics