Science & Mathematics - 22 August 2007

2007-08-22 16:39:29 · 3 answers · asked by Chase 1 in Geography

How many different transitional forms would have had to occur during these millions, billions of years of evolution? Are there any fossils or any evidence to support any transitional forms?

2007-08-22 16:37:43 · 14 answers · asked by Anonymous in Biology

20 msec
1/40 sec
500 msec

2007-08-22 16:34:31 · 1 answers · asked by achylles11 1 in Physics

solve for xy= x+y (putting y on one side)
thanks

2007-08-22 16:26:36 · 6 answers · asked by Anonymous in Mathematics

It is a dry day and you are washing your hair to remove the natural oils, then you thoroughly dry it, and run a plastic comb through it. Why would small bits of paper be atrractd to the comb.

2007-08-22 16:25:46 · 5 answers · asked by Diane S 1 in Physics

I'm given this incorrect problem. I need to be able to find the error and correct it...but I'm not sure how to go about doing it

5/x=x-4
x(5/x)=x-4
5=x-4
9=x

????

2007-08-22 16:18:26 · 12 answers · asked by Susie 6 in Mathematics

The solutions of line m are (3, 3), (5, 5), (15, 15), (34, 34), (678, 678), and (1234, 1234).
The solutions of line n are (3, -3), (5, -5), (15, -15), (34, -34), (678, -678), and (1234, -1234).

Form the equations of both the lines.
What are the co-ordinates of the point of intersection of lines m and n?
Write the co-ordinates of the intersections of lines m and n with the x-axis.
Write the co-ordinates of the intersection of lines m and n with the y-axis.

2007-08-22 16:07:30 · 4 answers · asked by bobbie 1 in Mathematics

Cumene is a cmpd containing only C and H that is used in the production of aceton and phenol in the chemical industry. Combusetioni of 47.6 mg of cumene produces some Co2 and 42.8 mg of water. The molar mass is between 115-125. determin the mpirical formula nad molecualr formula.Please show work.

i have no idea what im doin wrong here. Seriously

2007-08-22 16:07:06 · 1 answers · asked by Krazym0nkey 2 in Chemistry

Why is it the there is only one direction in time the one that we are aware of the arrow seems to move forwrd only.
And please dont say it will start to reverse when the universe collapses as I think that is nonsense, but there again who knows.
what really is time..?

2007-08-22 16:04:51 · 10 answers · asked by emc.squared 1 in Astronomy & Space

2007-08-22 16:00:02 · 5 answers · asked by mich 4 3 in Biology

I just learned synthetic division today and I'm confused about the zeros. For example in the equation:

(5x^6 - 3x^5 + 2x - 7) divided by (x + 2)
I know there are three zeros when I divide it...BUT WHY?
Please help! D: WHAT are the zeros for?

2007-08-22 15:58:08 · 4 answers · asked by dk 3 in Mathematics

2007-08-22 15:50:09 · 3 answers · asked by playful 1 in Engineering

How many grams of oxygen are necessary to produce 4.5 moles of NO2?

How many molecules of water are produced when 2.25 moles of ammonia are completely reacted?

2007-08-22 15:47:56 · 2 answers · asked by Bucky 1 in Chemistry

2007-08-22 15:46:08 · 4 answers · asked by Anonymous in Mathematics

1. Is 100% Humidity when it is raining?
2. If so what is 99% humidity?
3. Is mist considered 100% humidity?

2007-08-22 15:45:17 · 6 answers · asked by Martha Y 2 in Weather

Arrange the following in expected order of solubility in water from lowest to highest: I2, KI, and C8H8? Could someone explain it to me plz???

2007-08-22 15:44:44 · 4 answers · asked by Dom Dom Damdum 3 in Chemistry

So far I have Sodium 23(2)
Sulfur 32(1)
Oxygen 16(4)
but not sure if that helps need to find

Na____S____O____

2007-08-22 15:44:16 · 1 answers · asked by Bucky 1 in Chemistry

Could someone check to see if I did this right? I was given an atomic number or symbol of these atoms and I had to find the rest. Should I round up the neutron number or one of the others?

1)Atomic number: 11 Symbol: Na Mass Number: 22.989 Proton Number:11 Neutron Number:11 Electron Number:11

2)Atomic number: 13 Symbol: Al Mass Number: 26.981 Proton Number:13 Neutron Number:13 Electron Number:13

3)Atomic number: 26 Symbol: Fe Mass Number: 55.847 Proton Number:26 Neutron Number:29 Electron Number:26

2007-08-22 15:41:59 · 5 answers · asked by Bucky 1 in Chemistry

2007-08-22 15:41:51 · 12 answers · asked by carayKaray 3 in Biology

I also need to find 4 points of intersection and "Show work."
I can easily graph those two in polars, although I'm not positive how to show work while finding intersecting points.

(Keep in mind I'm not in Calculus...so if you have a way with derivatives/integrals...I can't do it :p)

2007-08-22 15:41:29 · 2 answers · asked by bubblebobboy 1 in Mathematics

It is faceted into an oval shape and the flaws are light blue and very small. There are no occlusions.

2007-08-22 15:37:44 · 1 answers · asked by Anonymous in Earth Sciences & Geology

2007-08-22 15:30:46 · 9 answers · asked by Caysie101 5 in Astronomy & Space

2007-08-22 15:24:09 · 2 answers · asked by Dani J. 1 in Physics

of the line parallel to y=-1/3x-7 through (6,5)

2007-08-22 15:23:51 · 5 answers · asked by JOGOO 2 in Mathematics

Would you rather just have the answer to your problem or is it more helpful to you when people give you tips on figuring it out?

2007-08-22 15:21:18 · 7 answers · asked by Smarty-Marti 5 in Mathematics

2007-08-22 15:17:04 · 8 answers · asked by Darryl H 1 in Chemistry

are they whit or black?

2007-08-22 15:11:26 · 7 answers · asked by Anonymous in Zoology

plz tell me

2007-08-22 15:03:05 · 7 answers · asked by Anonymous in Astronomy & Space

How many ways can you give 20 cents in change?

2007-08-22 14:59:32 · 15 answers · asked by Anonymous in Mathematics

ok i mean like insted of going to left or right you go down whats there?

2007-08-22 14:58:24 · 8 answers · asked by penguin1597 1 in Astronomy & Space