Science & Mathematics - 11 October 2007

2007-10-11 16:08:34 · 3 answers · asked by Anonymous in Biology

7/9-(-13/18)

2007-10-11 16:07:18 · 5 answers · asked by Anonymous in Mathematics

Also how are the leaves the same?

2007-10-11 16:04:15 · 1 answers · asked by Anonymous in Botany

I personally believe three states: PA, OH, & MO, are three typical or ordinary st8s. All three have @ least two metropolitan areas. The topography is modest (OH has a river plain; MO has a small mtn. range down south; PA is a mountainous exception). The populace don't have distinctive accents, @ least in the cities. & I think urban sprawl is an issue; I do no it's a issue in Missouri. But that's just my opinion. Let's discuss. Which states do u think seem 2 b ordinary? How different is IL from HI? NY from SC? MI from CA?

2007-10-11 16:02:56 · 3 answers · asked by The Glorious S.O.B. 7 in Geography

A Clorox advertisement published in 1993 carried the following message: "Raw foods like chicken can carry germs that cause salmonella sickness. It's important to kill the bacteria on any surface raw foods touch with a little Clorox. Soap and water won't do the trick." Immediately above the statement was a photo of a raw chicken, a green pepper, three carrots and a red Bermuda onion. At the bottom of the page a box describes "a little Clorox" as a solution made by mixing a sink full of water with 1/8 cup of Regular Clorox Liquid Bleach. How many things can you find wrong with this advertisement?

2007-10-11 16:01:57 · 5 answers · asked by monkeymel1003 2 in Biology

When vector A is added to vector B, which has a magnitude of 5.0, the vector representing their sum is perpendicular to A and has a magnitude that is twice that of A. What is the magnitude of A.

Im pretty much stumped, though I know the answer is 2.2. Could anyone explain? Thanks.

2007-10-11 15:57:31 · 2 answers · asked by Anonymous in Physics

A mol of photon in the red visible region of the electromagnetic spectrum has an energy of 181 kj/mol

calculate the wavelength in nm of the photons


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I have a solution but i dont understand it. i guess im supposed to change kj/mol to j/photon, why? how?

2007-10-11 15:56:46 · 1 answers · asked by Anonymous in Chemistry

is it true that canada really have days without light ???

2007-10-11 15:53:42 · 7 answers · asked by young_an_ inlove86 1 in Astronomy & Space

What is the answer to this question? What is 5 to the power of 123?Try to answer this.

2007-10-11 15:50:54 · 5 answers · asked by Joseph D. 1 in Mathematics

i had to do a lab in biology class and now i have to answer if cheeks cells are dead or alive and why. I had wipe the inside of my mouth with a toothpick and rub my saliva on the slide then view it. The cells seemed to stay still but i dont know whether they are dead or alive.

2007-10-11 15:50:40 · 15 answers · asked by ManUnited!Ole!Ole!Ole! 3 in Biology

If I drop an eyedropper drop of ordinary unleaded petrol into a container of exactly 1 litre, once it evaporates, what will the concentration of petrol vapour be, measured in PPM.

2007-10-11 15:45:23 · 1 answers · asked by Anonymous in Chemistry

where is the median from the following set of numbers.
463,582,401,533,457,514,438 ?

2007-10-11 15:45:19 · 8 answers · asked by Brittandbaby 2 in Mathematics

2007-10-11 15:44:14 · 2 answers · asked by sojo3 1 in Physics

2007-10-11 15:43:09 · 2 answers · asked by sojo3 1 in Physics

2007-10-11 15:42:48 · 7 answers · asked by DeAd DiScO 4 in Weather

I am one of those people that do not remember what they dreamt about as soon as they wake up. I go 98% of the month not remembering a single dream.But some strange coincidences have been happenong and apparently family members claims it happens to them to. I will have a extremely unvivid (hazed, foggy, brief) dream of something and wake up not to remember it.But a few months or on several occasions a year will pass and something will happen that i had an exact dream of.(Something out of the ordinary because most times its with people or a place I hadnt known or been.My whole childhood has been like this.And recently I have been having the same occurances and but this time I remember them happening in my dream and do something I know I didnt do.Changing the outcome of the dream I previously had of the situation.Soon afterwards i would feel funny like enlightened because my mind wont stop wondering "what if" or "what could have happened".What is going on.What is Deja Vu.Y am i affected?

2007-10-11 15:42:24 · 7 answers · asked by Anonymous in Paranormal Phenomena

I know that salt is primarily composed of NaCl, but how does the sodium and the chlorine get there if not all acids have sodium and chlorine?

2007-10-11 15:40:15 · 4 answers · asked by Rice R 1 in Chemistry

The mass of a box is 50kg sliding down a bank angled 30 degrees to the horizontal. The coefficient of friction is 0.20.(a)
What is the acceleration of the box? (b) What is the frictional force on the box?

2007-10-11 15:38:05 · 4 answers · asked by mike h 1 in Physics

2007-10-11 15:33:22 · 3 answers · asked by Anonymous in Chemistry

Many years ago, maybe 15 or 20 I saw a show on PBS that explained Einstein’s theories very well. They use computer animated balls and grids to show space warping and went into black holes and such. Does anybody remember this TV show and its name? I would love to find a DVD of it or one like it.

2007-10-11 15:30:57 · 4 answers · asked by Steve L 2 in Astronomy & Space

A swimming pool is 12 meters long, 6 meters wide, 1 meter deep at the shallow end, and 3 meters deep at the deep end. Water is being pumped into the pool at 1/4 cubic meter per minute, and there is 1 meter of water at the deep end.

(a) What percent of the pool is filled?
(b) At what rate is the water rate rising?

2007-10-11 15:30:44 · 2 answers · asked by bosox08 4 in Mathematics

I need the scientific name of many plants along with interesting facts about the plant.

2007-10-11 15:30:40 · 5 answers · asked by abacab11 1 in Botany

2007-10-11 15:28:58 · 2 answers · asked by Anonymous in Chemistry

Two circles (x + 4)^2 + (y - 7)^2 = 2 and (x - 3)^2 = 2 have common tangents. Find the equation of the common external tangent that has the largest y-intercept. Give your answer in the form y = mx + b.

2007-10-11 15:27:01 · 2 answers · asked by Anonymous in Mathematics

2007-10-11 15:26:06 · 16 answers · asked by cv v 1 in Medicine

2007-10-11 15:24:10 · 2 answers · asked by Anonymous in Physics

2007-10-11 15:23:42 · 6 answers · asked by West 3 in Chemistry

im definetaly a left brain. i really want to strengthen my right side of my brain. is there any exercises/techniques i can do to acheive this???????

2007-10-11 15:22:08 · 13 answers · asked by SFL305 2 in Parapsychology

i know your going to say god. but how did god do it and how did god here? why cant our brains comprehend this? it sucks. whatever put god here, who made that? i think our brains can only understand things that have a start and end, am i right? well any theories will be interesting so post here.

2007-10-11 15:21:06 · 4 answers · asked by Im At Dat Wh!t3 Boi StaTuZ!!! 1 in Other - Science

A man and a woman each have dark eyes, dark hair and freckles. The woman is heterozygous for each trait while the man is homozygous for each trait. What are the chances their baby will have dark eyes, dark hair and freckles. What are the chances their baby will have the genotype as the father? What are the chances their baby will have the same genotype as the mother?

B=dark eyes b=blue eyes
H=dark hair h=blond hair
F=freckles f=no freckles

2007-10-11 15:16:38 · 2 answers · asked by damigurl05 1 in Biology