Science & Mathematics - 30 July 2007

Solve algebraically and check your potential solutions:
√x+2-x=0

2007-07-30 03:10:13 · 6 answers · asked by DEE H 1 in Mathematics

Find the missing diagonal of the rhombus that has an area of 12 feet squared and one diagonal of 6ft.

2007-07-30 03:09:34 · 3 answers · asked by zerokun4 1 in Mathematics

Find the area of a rhombus with diagonals of 4 feet and 5 feet.

2007-07-30 03:09:04 · 5 answers · asked by zerokun4 1 in Mathematics

A beaker with 190mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.1M . A student adds 8.70mL of a 0.420M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.76.

Express your answer numerically. Use a minus (-) sign if the pH has decreased.

2007-07-30 03:08:44 · 1 answers · asked by Anonymous in Chemistry

2007-07-30 03:07:49 · 13 answers · asked by ramboo 1 in Physics

Jon’s backyard is in the shape of a rectangle and measures 200 feet by 140 feet. In his backyard he has a rectangular pool that measures 30 feet by 15 feet. Jon’s entire back yard is grass except for the swimming pool. What is the total area of Jon’s back yard that has grass? Do not forget to show your work.

2007-07-30 03:03:31 · 8 answers · asked by zerokun4 1 in Mathematics

I am lookg for Tape that can withstand very high heat (like mufflers or chimneys). I am also looking for denatured alcohol. Where can I find those online or at local stores?

2007-07-30 03:03:10 · 2 answers · asked by soccerlover1616 1 in Other - Science

Look at the following videos, proving controlled demolition
and an "inside job" false-flag fabricated terror attack on 9/11:

http://www.truth911.net

Watch the 90 minute films:

9/11 Mysteries

Loose Change 2

Terror Storm 2

and look at these ABC News videos & amateur videos

http://www.youtube.com/results?search_query=molten+metal+wtc&search=Search


showing MOLTEN METAL dripping out of the South Tower,
just moments before its complete free-fall collapse right down
to the ground... Steel has a melting point of 1532 Celcius, but
open air fires (due to limited oxygen supply) only burn as hot
as 233 - 250 Celcius... not even hot enough to start softening
steel at 300 Celcius! SO HOW COULD AIR FIRE MELT
STEEL? when you all know that your cooking pots and pans
and BBQ hotplates made of steel do not melt, or glow yellow
or red hot when exposed to air fire? HOW?

Why is it people are too stubborn to accept this physical
evidence that proves an inside job?

2007-07-30 03:01:09 · 5 answers · asked by Anonymous in Physics

For example could you have a chair to a different scale compared to the house

eg scale of house 1:50
scale of objects 1:25

2007-07-30 02:55:39 · 1 answers · asked by yahooligan! 3 in Engineering

Two squares are similar. The ratio of a set of sides is 2:4. What is the ratio of their areas?

2007-07-30 02:54:51 · 5 answers · asked by zerokun4 1 in Mathematics

The diagonals of a square each measure 7 feet. Find the area of the square.

2007-07-30 02:54:28 · 6 answers · asked by zerokun4 1 in Mathematics

C = (5/9)(F - 32) C is expressed in terms of F..

5/9)(F - 32) = C
F - 32 = (9/5)C How did 9/5 exist???
F = (9/5)C + 32

Pls explain this step by step........

2007-07-30 02:53:04 · 6 answers · asked by Anonymous in Mathematics

2007-07-30 02:50:56 · 2 answers · asked by phyu z 1 in Engineering

Explain briefly why it is or is not possible in each case

2007-07-30 02:50:05 · 5 answers · asked by polol 2 in Physics

2007-07-30 02:47:30 · 12 answers · asked by Anonymous in Paranormal Phenomena

2007-07-30 02:26:21 · 13 answers · asked by Anonymous in Astronomy & Space

without any calculator, by algebra.

2007-07-30 02:24:25 · 10 answers · asked by Anonymous in Mathematics

It's hotter than blazes here.

2007-07-30 02:21:47 · 4 answers · asked by jimmymae2000 7 in Weather

an interesting and detail answer will be preffered. Thank you!!!

2007-07-30 02:21:25 · 10 answers · asked by dhivu 1 in Geography

2007-07-30 02:19:11 · 16 answers · asked by moonrider 6 in Weather

case in point: A friend of mines' girlfriend told me recently about how his deceased father suddenly and unexpectedly appeared to her, who actually passed away a couple of years ago. she and my friend were watching television together when it happened (this happened a couple of months ago), and it must've scared the dookie out of her. my friend said that he didn't see the apparition, but he believed her because she was quite visibly spooked when it happened. he also said that he believed his father knows that he doesn't want to see him, and for that reason did not appear to him- he only appeared to his girlfriend. these are two very serious people, and i know they wouldn't kid around about something like this- in fact, the girlfriend told me that she never believed in anything like that until her experience a few months ago- both of them have no idea how or why this happened, but are now very curious about such phenomena. Is anyone familiar with such experiences? How can this happen?

2007-07-30 02:12:48 · 9 answers · asked by gradenko65 2 in Paranormal Phenomena

Since every thing in the universe is made of chemicals, which has cooled (earth) still hot (sun) etc so everthing is energyeither directly or by their position, gravity. So Living human could be just moving energy

2007-07-30 02:11:59 · 9 answers · asked by owor 1 in Astronomy & Space

2007-07-30 01:56:25 · 3 answers · asked by Al 2 in Medicine

Given A ={(t^2)/2} -{[(1-t)^3]/5} find dA/dt thx

2007-07-30 01:56:05 · 4 answers · asked by bordemeriste b 1 in Mathematics

2007-07-30 01:53:44 · 13 answers · asked by Anonymous in Astronomy & Space

1) 5√2
------------
√8 - √7
how can i rationalise the denominator of this, as the ones i have been doing so far were simple ones like this one below:-
1
----------
3 - √7
where i can use the rule.
please help
thanks

2007-07-30 01:52:08 · 3 answers · asked by Anonymous in Mathematics

2007-07-30 01:50:59 · 5 answers · asked by jassi s 1 in Earth Sciences & Geology

2007-07-30 01:50:42 · 2 answers · asked by Anonymous in Biology

2007-07-30 01:49:44 · 3 answers · asked by adam a 1 in Mathematics

This is for all UFO believers. May I have your opinion?

It is alleged US astronauts ever encountered extraterresterials when they go to the moon. Some web sites also alleged the extraterresterials told the astronauts to get lost.

If this was the case, do you think the US can ever successfully establish a moon base and lay claim to it if extraterrestrials are already there?

What do you think will happen if they try to do so?

http://www.ufocasebook.com/moon.html...

http://www.youtube.com/watch?v=kx2GfkzDwBs

2007-07-30 01:46:53 · 12 answers · asked by Street Smart 4 in Astronomy & Space