Science & Mathematics - 1 September 2007

2007-09-01 15:38:16 · 9 answers · asked by TTU fan 2 in Engineering

Find the supplementary angle to theta= 35.6 degrees

2007-09-01 15:34:55 · 4 answers · asked by Anonymous in Mathematics

2007-09-01 15:34:25 · 3 answers · asked by Dave H 2 in Engineering

2007-09-01 15:25:26 · 14 answers · asked by Anonymous in Astronomy & Space

Most of you have used steel cooking pots, exposed to gas
flames, or even an open campfire.

Some of you have even tried oxy-acetylene or arc welding,
to heat up steel to its melting point.

So what do you observe when you heat up steel below its
melting point?

Does it explode violently, or does it simply behave like weak
flaccid rubber and start sagging?

Watch this video to help you decide:

http://www.youtube.com/watch?v=Qa7PN-8T2VY

http://www.911weknow.com/index.php?option=com_content&task=view&id=34&Itemid=31

Just remember: popular opinion is NOT always correct!

Hundreds of years ago, most Europeans and so-called
scientists believed that the Earth was flat, and that if you
sailed too far from land, your ship would fall off the edge of
the Earth. Even religious leaders castigated and outcast
anybody who claimed that the sun was not the centre of the
Universe.

Watch the 3 half-hour movie parts to "9/11 Mysteries",
narrated by Dr Judy Wood, PhD.

2007-09-01 15:24:45 · 5 answers · asked by Anonymous in Engineering

Thanks!

2007-09-01 15:19:58 · 4 answers · asked by martinashasha 2 in Mathematics

What us the PH of sulphuric acid in the following concentrations:
- 0.05Molar
- 0.025 Molar
- 0.25 Molar
- 0.5 Molar
Thanks alot fot your help!!!

2007-09-01 15:17:23 · 5 answers · asked by Anonymous in Chemistry

Please show the solution.....Use the equation: 3Fe + 2O2--> Fe3O4...

2007-09-01 15:16:15 · 1 answers · asked by Anonymous in Chemistry

is it good?

2007-09-01 15:16:05 · 2 answers · asked by Anonymous in Geography

cape of good hope, cape verde, gulf of guinea, maghreb, mt. kenya, mt. kilimanjaro, namib desert, serengeti plain, strait of gibraltar, victoria falls!!!!!

2007-09-01 15:15:13 · 5 answers · asked by Anonymous in Geography

2007-09-01 15:07:22 · 14 answers · asked by brutaltric 1 in Astronomy & Space

2007-09-01 15:03:37 · 4 answers · asked by Andreu 2 in Zoology

How the modern atomic theory changed sinced atoms were discovered?

2007-09-01 15:03:21 · 2 answers · asked by Javier G 1 in Chemistry

ur school is 18 3/4 miles south of pittsburgh and ur house is 44 1/4 miles south of pittsburgh. u leave ur school at 5:00 pm, traveling south by bicycle at an average speed of 15 miles per hour. ur father leaves pittsburgh in a car at 5:45 PM. He is driving south at an average speed of 55 miles per hour. let 't' represent the time it takes ur father to drive from pittsburgh toward ur house.


3. write an equation to find ur distance 'd1' from pittsburgh after 't' hours. the answer is d1=18 3/4 + 15(t +3/4)

4.write an equation to find ur father's distance 'd2' from pittsburgh after 't' hours. the answer is: d2=55t

5. use ur equations from exercises 3 and 4 to find how long it takes ur father to pass you

is the answer an hour and 33 minutes?

and how do i get the answer to this question

6. find the number of hours you rode your bicycle when your father passes you.

2007-09-01 15:02:32 · 2 answers · asked by Kendra C 2 in Mathematics

more infomation are really welcome and appreciated!

2007-09-01 15:02:13 · 1 answers · asked by writer 1 in Botany

a triangleis divided by a bisector thus forming two triangles. the length of the base is unknown for both triangles.the first triangle's leg measurement is 20.the other one is 13. the bisector measures 12. what is the measurement of the length of the base?

2007-09-01 15:02:08 · 2 answers · asked by avenger 2 in Mathematics

who is messing wit it?

2007-09-01 14:57:03 · 2 answers · asked by Anonymous in Geography

thus, forming two right triangles out of the triangle.what is the measurement of the bisector?

2007-09-01 14:56:35 · 5 answers · asked by avenger 2 in Mathematics

A circular ring of charge of radius a and total charge Q lies in the x-y plane with it center at the origin. The direction of the force on a very small segment of this ring is directed __________ if Q is negative.


a. inward toward the origin
b. outward from the origin
c. along the negative z-axis
d. in no direction since the force is zero

Thanks!

2007-09-01 14:54:33 · 3 answers · asked by Anonymous in Physics

2007-09-01 14:51:00 · 9 answers · asked by Mark B 2 in Mathematics

What should be internal diameter of a pipe to let 160L/second water flow vertically (at 75o angle water fall).

2007-09-01 14:49:20 · 2 answers · asked by infoseeker 1 in Engineering

4y^2 + 4 = 10y

2007-09-01 14:46:39 · 9 answers · asked by Nana Callie loves to sing 4 in Mathematics

2007-09-01 14:46:29 · 3 answers · asked by Anonymous in Physics

bhla blah blah................

2007-09-01 14:44:56 · 5 answers · asked by Anonymous in Botany

a.-burette
b.-conical flask
c.-pipette
d.-drops on end of pipette or burette

2007-09-01 14:42:55 · 2 answers · asked by Anonymous in Chemistry

I have to draw a transect of the topography along this line, and I need to know some of the major (or biggest at least) towns or villages along the Tropic of Capricorn.
Also what are the points of interest along it, like rivers, lakes, Uluru, mountain ranges, deserts etc.

2007-09-01 14:42:08 · 5 answers · asked by Stella 2 in Geography

what percentage of the volume of a hydrogen atom is protons? assume the atom is a sphere and the volume of a sphere is 4/3(pi)r^3

2007-09-01 14:40:11 · 2 answers · asked by Anonymous in Physics

2007-09-01 14:39:23 · 2 answers · asked by hilanger23 1 in Chemistry

why is it that, when i held the evaporation dish over the flame of a tirrell burner, the flame follows the dish where ever we move it?

2007-09-01 14:38:28 · 1 answers · asked by Anonymous in Chemistry

if you have - (-5) ^3 do the two negatives cancel out each other and you are left with possitive 125? U guys should know because u are smart. thanks for the help!!

2007-09-01 14:37:52 · 4 answers · asked by Anonymous in Mathematics