Science & Mathematics - 11 July 2007

Identify "u"
integration formula

2007-07-11 16:13:00 · 3 answers · asked by Cantthinkofanickname 1 in Mathematics

2007-07-11 16:12:20 · 2 answers · asked by lil_krisha 1 in Medicine

identify u
integration formula.

2007-07-11 16:11:30 · 4 answers · asked by Cantthinkofanickname 1 in Mathematics

I have asked this question, yet i still don't understand?? please someone can you thoroughly explain it.

2007-07-11 16:10:17 · 3 answers · asked by Misbah 2 in Mathematics

2007-07-11 16:10:06 · 23 answers · asked by hussen e 1 in Parapsychology

Air pressure decreases with an increase in altitude. This happens because air pressure is determined by the weight of the overlying air. Consequently, air rising upward experinces lower pressure and expands. What must happen to the temperature of air rising through the atmosphere?

What happens to the temperature of air when it moves downward in the atmosphere?

2007-07-11 16:10:00 · 8 answers · asked by Kerri L B 1 in Weather

2007-07-11 16:08:31 · 3 answers · asked by lil_krisha 1 in Medicine

If the atomic radius of metallic ytterbium is 193.92 pm, and the density of the metal is 6.96 g/mL, what type of unit cell does metallic ytterbium contain?

2007-07-11 16:07:59 · 2 answers · asked by Anonymous in Chemistry

I live in the Midwest, U.S.
What is the bright star(?) in the southern sky at about 40 degrees above the horizon?

2007-07-11 16:07:26 · 6 answers · asked by Ming 2 in Astronomy & Space

2007-07-11 16:07:21 · 2 answers · asked by Cheryl M 1 in Zoology

is it possible to take out part of Ur brain????

2007-07-11 16:06:55 · 7 answers · asked by badgirl34 2 in Other - Science

I need to know for a recipe.

2007-07-11 16:02:28 · 6 answers · asked by CW 2 in Other - Science

2007-07-11 16:01:41 · 7 answers · asked by rose 1 in Mathematics

Need to know about the particle model of matter timeline (the yr, the person and what they discovered)

also need to know what particle model of matter is

and

about John Dalton's contribution to the particle model of matter theory.

2007-07-11 15:56:32 · 5 answers · asked by whoopedy 2 in Physics

what is the sum of all real numbers?

2007-07-11 15:56:11 · 6 answers · asked by Jay 4 in Mathematics

what is the air temperature
air pressure
surface wind direction and strength

for areas in lattitudes
0-30 degrees
03-60 degrees
60-90 degrees
and 90 degrees?

2007-07-11 15:55:03 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2007-07-11 15:52:41 · 12 answers · asked by Anonymous in Mathematics

i need a 15 minutes video, of an inorganic chemical...something that talks about it !! please help meª

2007-07-11 15:51:11 · 1 answers · asked by axenstar91 1 in Chemistry

Classify the following, if possible. 7x2 + 10xy + y2

A) Not classified B) Trinomial C) Monomial D) Binomial

2007-07-11 15:50:20 · 6 answers · asked by Somebody 2 in Mathematics

Could x^2+5x+6.25 be simplified into a binomial?

2007-07-11 15:45:31 · 4 answers · asked by jumba 1 in Mathematics

If 1.5 chickens lays 1.5 eggs in 1.5 days, how many eggs can 24 chickens lay in 24 days?

2007-07-11 15:43:27 · 8 answers · asked by Anonymous in Mathematics

like in fehreheit

2007-07-11 15:41:56 · 0 answers · asked by Stunt M 3 in Astronomy & Space

2007-07-11 15:39:37 · 4 answers · asked by Man Who Disproves All 1 in Physics

Plane Trigonometry

2007-07-11 15:38:29 · 3 answers · asked by Peter 1 in Mathematics

It can therefore be concluded that darkness is imaginary/not real...

2007-07-11 15:37:48 · 9 answers · asked by Hitladen 1 in Astronomy & Space

On my globe the earth is round but is the earth actually like that?

2007-07-11 15:37:25 · 14 answers · asked by rydude1232 1 in Astronomy & Space

Which of the following is not a polynomial?

A) 24 B) 4x3 + 5x – 1 C) 2x – D) 3xy2 + xy

2007-07-11 15:30:22 · 3 answers · asked by cw21 1 in Mathematics

f(x) = the integral from 0 to x

(t^2-49)/(1+cos^2t) dt

... at what value of x does the local max of f(x) occur?

What I have is... FTC1 lets me get rid of integration sign so all I have left is:

t^2-49)/(1+cos^2t

find the 2nd derivative to find the critical points and set it to 0.

I'm having trouble dealing with the trig functions what I have so far from the quotient rule is

f"(x)=0=((1+cos^2t)(2t)) - ((t^2-49)(-2costsint))

but then ok - when i figure out t - that will be.... what exactly? An inflection point right? But I'm looking for a maximum value. Hmmm... Ideas?

2007-07-11 15:22:51 · 2 answers · asked by Anonymous in Mathematics

I am not sure how to solve physics problems on my own, and this one especially baffles me. It is the following

1. A radioactive form of uranium has a half-life of 2.5x10^5 years.

what's the remaining mass of a 1.0g sample after t years


2. a tennis ball is dropped from a height of 10m. each time the ball touches the ground, it bounces up to about 45% of the max. heighut of the pervious bounce. determine its height after 5 bounces.


I want to impress the males in my class who think that girls can't be as smart so maybe they will accept me.

2007-07-11 15:12:40 · 3 answers · asked by orangegreenyellow 1 in Mathematics

2007-07-11 14:58:19 · 3 answers · asked by lzhnyk 1 in Mathematics