Science & Mathematics - 22 August 2007

1. 625mm=_______hm
2. 0.000254 cg= ______pg
3. 1.047 dm^3=_______cm^3
4. 0.0065 nL=________kL
5. 17 Mn=________m

2007-08-22 09:45:03 · 1 answers · asked by Karen R 1 in Mathematics

like, the focal point or whatever.

[in other words, if the earth was flat we would see farther across the ocean because it wouldnt bend down, right?]

?

2007-08-22 09:44:58 · 6 answers · asked by Anonymous in Geography

2007-08-22 09:43:49 · 6 answers · asked by Anonymous in Physics

2007-08-22 09:43:08 · 2 answers · asked by Anonymous in Zoology

2007-08-22 09:39:40 · 4 answers · asked by nino 2 in Astronomy & Space

I figure the physcis community could help me out on this one...

So, General Relativity still depends upon human observation. The experiments, it all, etc. etc.

But if we took aware the observational element, humans, would it still be the same (the theory & spacetime being absolute)?

The observations of General Relativity are the assessment of our time measurement reconciled over large distances and speeds.

So if the universe is just out there, with no human to observe it would time exist? It would just be particle creation and deterioration-two things that I don't think solidify "time" seeing that they act contradictory.

It seems like the confirmations of General Relativity are confirmed by our own measurement system/observation. In raw reality, minus the human element, would it still be the same? Aren't we just being convinced of general relativity because of the need to undertsand velocity over huge distance?

I suck at articulating this so if you know what I mean

2007-08-22 09:33:27 · 7 answers · asked by Anonymous in Physics

2007-08-22 09:32:15 · 7 answers · asked by jennifer m 2 in Mathematics

(this data was confirmed by Al Gore's chief advisor, James Hansen) shows that the Earth has not increased in Mean Average Temperature since 1998?

2007-08-22 09:31:59 · 19 answers · asked by Eric R 6 in Astronomy & Space

do you think that humans will be able to travel to the past someday?

2007-08-22 09:31:28 · 14 answers · asked by Tara 1 in Astronomy & Space

What's the differences amoug a cougar, a mountian lion, and a puma?

2007-08-22 09:30:51 · 8 answers · asked by asiansportchic 1 in Zoology

1

f(x)=x sqrt[(x^2)+16]
defined on [-7,4] interval

f(x) concave down on the region ? to ?
f(x) concave up on the region ? to ?
inflection point?
minimum?
maximum?

2.
f(x) = x^3/[(x^2)-4]

defined on the interval [-15,15]

vertical asymptotes (2 of them)??

concave up on the region ? to ?
and ? to ?

inflection point?

2007-08-22 09:22:47 · 1 answers · asked by Anonymous in Mathematics

Name these ions or give the ion's formula:
1) _______ o2^2-
2) _______ HCOO^1-
3)_______ferrous
4)_______ plumbic
5)_______ oxalate
6)_______Hg^2+ (old)
7)_______S2O3^2-
8)_______CH3COO^1-
9)_______hyponitrite
10)______OH^1-
11)______ammonium
12)______ClO2^1-
13)______tin(IV)
14_______perbromate

2007-08-22 09:22:07 · 1 answers · asked by Karen R 1 in Chemistry

2007-08-22 09:22:05 · 1 answers · asked by fine_lil_mami2001 1 in Engineering

I know how to evaluate limits at infinity but I don't know how to evaluate it at a number. Can someone give show me the answer and explain why it is. THANKS

2007-08-22 09:20:53 · 4 answers · asked by chris s 1 in Mathematics

what is the antiderivative of this? help please?

2007-08-22 09:14:38 · 4 answers · asked by Anonymous in Mathematics

cell pphones are killing off bees cuz of tha high radiation and stuff .. hopefully we dont continually buy and buy and buy cell phones..


if bees are being chewed up, then we hsouldnt buy cell phones!

bees produce honey and crap.. without honey and crap, we would have mega poor health!!

2007-08-22 09:08:25 · 5 answers · asked by Anonymous in Zoology

1.
f(x)= 4x^3-6x^2-144x+1

decreasing on what interval?
increasing on the (MINF, ?) and (?,INF) interval

local max?
_________________________________
2.
f(x)=4x+2x^-1
local max?
value?

local min?
value?

2007-08-22 09:07:43 · 1 answers · asked by Anonymous in Mathematics

how do i solve this ?

2007-08-22 09:06:54 · 4 answers · asked by Anonymous in Mathematics

Recently there's been a commercial on the Discovery Channel for a program called Blue Planet. At one point it shows some very odd looking fish. They are black and red, and the strange part about them is that they almost look like they have buck teeth. I highly doubt they have actual large squarish teeth like that, being fish, so I assume they are very convincing white markings. I would just like to know what kind of fish these are because I found them interesting. Would anyone happen to know what they are called?

(I can't find any pictures of them because I don't have their name, and I also can't find the promo for the show online)

2007-08-22 09:06:44 · 6 answers · asked by Emily H 2 in Zoology

Choices are (only one):

Io in orbit around Jupiter

Mercury in orbit about the sun

The moon in orbit about Earth

Co-orbiting Pluto and Charon

Neptune and Uranus in orbit about the sun


thanx in advance...

2007-08-22 09:05:10 · 5 answers · asked by jethaz 2 in Astronomy & Space

14. which gas will diffuse mostly rapidly at the same temperature and pressure?
a)fluorine, F2
b) Chlorine Cl2
c) ammonia, NH3
d)nitrogen(II) oxide NO

15. Which household product contains acetic acid, CH3COOH?
a) bleach
b) vinegar
c) drain cleaner
d) household ammonia

16. When the expression is balanced using smallest whole numbers, what is the coefficient of CO?
_K2CO3 + _C > _CO + _K
a)2
b)3
c)4
d)6

17. A 500.oo cm3 container is filled with 2.20 g of carbon dioxide gas, CO2 at 127 C. What is the pressure exerted by the gas?
a) 3.32 x 10^-1 kPa
b) 1.06 x 10^2 kPa
c) 3.32 x 10^2 kPa
d) 1.46 x 10^4 kPa

19. What is the empirical formula of a compound that contains 6.42 g sulfur, S, and 22.8 g flourine, F?
a)SF2
b)SF3
c) SF4
d)SF6

20. what is the total number of electrons in a sodium ion, Na+?
a) 1
b) 10
c) 11
d) 12

21. what mass of water is released, when 10.0 g of MgSO47H2O is completely dehydrated?
MgSO47H20 > MgSO4 + 7H2O
a)0.0407 g
b)0.285 g
c) 5.12 g
d) 51.1 g

2007-08-22 09:01:35 · 4 answers · asked by ashley t 1 in Chemistry

2007-08-22 08:59:28 · 7 answers · asked by Alexander 6 in Mathematics

I live in New England where the weather is weird anyway.

2007-08-22 08:58:53 · 9 answers · asked by Anonymous in Weather

2007-08-22 08:58:10 · 11 answers · asked by Sana 3 in Zoology

1:Which of the following equations has a slope of ½ and a y-intercept of -2?
A:y = -2x + ½
B:y = ½x + 2
C:y = ½x - 2
D: ½x - 2y = 4

2: Write the equation of the line that contains the points (2, 2) and (-3, 12).
Here is part of the answer. Please identify the missing part?
y = -2x + ___

3:Match the terms with the definitions.
Term Definition
m = 2, b = -4 A) y = 2
m = 2 and contains the point (0,4) B) y = 2x + 4
m = -4 and contains the point (0,2) C) y = 2x - 4
m = 0 and contains the point (0,2) D) y = -4x + 2

4:Which equation has a slope of 2 and contains the point (4,-4)?
A: y = 4x - 4
B:y = 2x + 2
C: y = 2x - 12
D: y = 2x - 4

5: The line y = 3x + 5 crosses the y axis at ______?

6:Write the equation of a line which contains the point (2,4) and (-2,2)
y = -2x + 2
y = 2x + 4
y = ½x + 3
y = -4x + 2

2007-08-22 08:55:50 · 4 answers · asked by Anonymous in Mathematics

please ASAP

2007-08-22 08:54:18 · 2 answers · asked by elvislover1963 1 in Mathematics

2007-08-22 08:53:40 · 3 answers · asked by Aurelia R 1 in Geography

I have recently taken delivery of a 20X microscope objective that I will be using to expand my reference beam for holography. At some point in the future (when budget allows), I will be incorporating said objective into a spatial filter. In determining pinhole size necessary, I will need to know the focal length of my objective.

Specs I know so far:

532nm
1.5mm beam
20X microscope objective

How do I determine the focal length of the lens in question? It is not marked with anything except 20/0.40...

2007-08-22 08:53:35 · 1 answers · asked by nowyermessingwithasonofabitch 4 in Physics

2007-08-22 08:51:04 · 25 answers · asked by mirrorbee 6 in Astronomy & Space

2007-08-22 08:49:08 · 1 answers · asked by Anonymous in Engineering