Science & Mathematics - 3 November 2006

^2= squared

2006-11-03 06:25:57 · 8 answers · asked by Math Freak 1990 1 in Mathematics

2006-11-03 06:22:40 · 28 answers · asked by Anonymous in Weather

2006-11-03 06:20:55 · 16 answers · asked by Anonymous in Astronomy & Space

Most humans see all the colors in the rainbow which are called the "visible spectrum". Do some animals have a wider visible spectrum and thus see additional colors unknown to humans.

2006-11-03 06:18:41 · 7 answers · asked by franko18042 1 in Biology

A.
3r2s5

B.
r3s6

C.
3r3s6

D.
none of these

2006-11-03 06:17:15 · 4 answers · asked by Anonymous in Mathematics

2006-11-03 06:16:32 · 8 answers · asked by Anonymous in Physics

2006-11-03 06:16:32 · 6 answers · asked by Anonymous in Geography

chemical formula is KPO4

2006-11-03 06:12:34 · 4 answers · asked by blackhawkhalo 2 in Chemistry

found a nest of rats in house,
there is a bar or log (dark brown) when rats eat it , they get dehydrated & when they drink water it kills them

2006-11-03 06:10:22 · 2 answers · asked by tonyarog45 2 in Zoology

original thought or educated guess

2006-11-03 06:09:44 · 5 answers · asked by old_brain 5 in Botany

Hi...
I've got some calculus questions that are really confusing me...I'm having to teach myself, and I'm not the best at it...So please help...

1. Find the largest open interval where the function is decreasing.
f(x)=square root of (4-x)
I got the answer decreasing at (4,infinity)

2. Identify the function's extreme values in the given domain and
say where they are assumed. Tell which of the values, if any, are absolute.
x^2 -4x, (-infinity is less than or = to x less than or = to 4)
Iot the answer local min. at (2,-4) local and absolute max. at (4,0)
I'm sure I got this one wrong...

3. Determine the location of each local extremum for the function.
x^3 +5x^2-13x+1
( got local max at 1, and local min. at 1)

4. Using the derivative shown, determine the intervals where the function is increasing or decreasing.
(1-x)(5-x)
(I got decreasing at (-infinity, 1) and increasing on (5, infinity))

So please help if you can...I just need to figure this stuff out..THANKS

2006-11-03 06:04:38 · 2 answers · asked by Anonymous in Mathematics

What are the major geographical features that are noted around the world that are caused by the movement of the plates?

2006-11-03 06:02:10 · 7 answers · asked by Teehee 1 in Earth Sciences & Geology

why does speed of sound change if the temp increases as it results in a decrease in density of air but the speed of sound increases through denser substances and reduces in rarer substances.

2006-11-03 06:01:33 · 2 answers · asked by Richard 3 in Physics

Just remember the squared exponent is around the whole function, not just on the t.

2006-11-03 06:01:15 · 2 answers · asked by umphrey610 1 in Mathematics

can someone suggest a formula? where the variables are
v= velocity in m/s (what we want to know)
D=internal diamter of pressure vessel (mms)
L = length of pressure vessel
d= internal diameter of barrell (also i.d of valve leading to pressure vessel)
l = length of barrell
M = mass of projectile in grammes
P = pressure of pressure vessel in psi (which i will covert to bar....anyway know how to convert bar to pascals?)
T = time valve is open in seconds
the spud gun will consist of a pressure vessel storing compressed air, with a valve in front of it leading to the barrel. when the valve is opened air will be released pushing a projectile out the barrell
couls soem one build me an equation to calculate the velocity of the projectile using these variables? i see all these spud gun sites on the net and id love to know how fast they go...
also whats the speed of sound?

2006-11-03 06:01:13 · 3 answers · asked by mrx 1 in Engineering

why does light acquire a diferent light if it is passed through a different coloured transparent substance

2006-11-03 05:58:36 · 3 answers · asked by Richard 3 in Physics

1. trans-1-bromo-2-methyl cyclohexane + sodium tert-butoxide in tert-butanol with heat

2. cis-1-bromo-2-methyl cyclohexane + sodium tert-butoxide in tert-butanol with heat

2006-11-03 05:58:32 · 2 answers · asked by afchica101 1 in Chemistry

the chemical formula is TiO

2006-11-03 05:56:47 · 2 answers · asked by blackhawkhalo 2 in Chemistry

2006-11-03 05:56:45 · 7 answers · asked by music_king 3 in Earth Sciences & Geology

2006-11-03 05:56:44 · 4 answers · asked by Anonymous in Mathematics

Hi!!!

Does anyone know of an interesting inorganic topic I should write about?

2006-11-03 05:54:08 · 2 answers · asked by Anonymous in Chemistry

2006-11-03 05:52:19 · 5 answers · asked by asylum31 6 in Mathematics

Let A be a fixed subset of the set X
Let T={U, a member of power set of X, (U is a subset of X): U is
an empty set or A is a subset of U}

I proved that T is topology on X
and for A and B (A is a proper subset of B, B is a proper subset
of X), I guess intB = B, clB = empty set, FrB = empty set.
(int = interior, cl = closure, Fr = boundary) Is this a right guess?

2006-11-03 05:50:26 · 1 answers · asked by Jenny 1 in Mathematics

What are the differences in structure, how they divide etc.
And and links to sites would be helpful.

2006-11-03 05:48:18 · 7 answers · asked by x_prettyin_punk 1 in Biology

I work in a lab using a small machine that produces UVB. We use a curtain around the machine, but light still escapes through the openings.

2006-11-03 05:47:01 · 1 answers · asked by SJ 1 in Other - Science

2006-11-03 05:42:14 · 5 answers · asked by Anonymous in Astronomy & Space

In a home laundry drier, a cylindrical tub containing wet clothes rotates steadily about a horizontal axis, as in Figure P7.63. The clothes are made to tumble so that they will dry uniformly. The rate of rotation of the smooth-walled tub is chosen so that a small piece of cloth loses contact with the tub when the cloth is at an angle of 68.0° above the horizontal. If the radius of the tub is 0.340 m, what rate of revolution is needed?

2006-11-03 05:40:07 · 1 answers · asked by RunmanJr2 2 in Physics

2006-11-03 05:40:03 · 4 answers · asked by rambabu d 1 in Chemistry

2006-11-03 05:36:38 · 2 answers · asked by amit t 1 in Engineering

2006-11-03 05:34:28 · 2 answers · asked by kimberlyjackson03 1 in Engineering