Science & Mathematics - 13 January 2007

After talking with my son about why the dinosaurs are extinct we came up with the theory that they may have suffered from methane poisoning. Considering that they were predominantly herbivorous, especially the largest creatures, then the methane created from flatulence would have been excessive to the point of polluting the air and thus causing the animals to suffocate. Any thoughts on this?

2007-01-13 11:43:17 · 6 answers · asked by inquiz55 1 in Biology

1. x² - 10x + 26 = 0
2. x² + 10x + 26 = 0
3. x² +10x + 24 = 0
4. x² - 10x + 24 = 0

Please explain it. I want to know how to work with imaginary numbers with roots.

2007-01-13 11:40:12 · 5 answers · asked by TheMiddleisSafe 3 in Mathematics

(0, -1/2) (0, 8)

2007-01-13 11:40:01 · 2 answers · asked by Anonymous in Mathematics

I just bought it today and it is very healthy, small to medium size.

2007-01-13 11:39:38 · 6 answers · asked by michael_p_8291 1 in Botany

2007-01-13 11:38:07 · 11 answers · asked by bingba n 2 in Physics

2007-01-13 11:30:04 · 4 answers · asked by warrr1 1 in Zoology

i need at least 10 good professions and i little definition please thank you soo much

2007-01-13 11:30:00 · 5 answers · asked by nick r 2 in Mathematics

A survey consists of 10 questions. Each question has 5 possible answers. If each respondent is to be classified according to the number of responses of each type. How many categories are possible?

2007-01-13 11:25:55 · 3 answers · asked by brennen 1 in Mathematics

2007-01-13 11:24:25 · 5 answers · asked by Betty S 1 in Weather

I plan to zoom in on 'earth at night' maps located on the Internet and count the number of pixels in a certain 'area' (e.g. midsized city) and see if light pollution naturally occurs in areas where there is population. Unfortunately, few (or no) maps on the Internet are reliable enough for me to look at (because of low res, no state or country boundaries, chance of being Photoshopped to make the image look 'better', etc...) and the process seems too tedious (city boundaries hard to 'distinguish', time in counting pixels, etc...). Can anyone help me, like introduced me to some special software or a good image (ahem...I mean really good, and better than the IDA stuff or the World Atlas of Night Brightness)? And if you can find the latter (an image) please give me a suggestion on how I can make the project less tedious. If you think I should have a new project, please keep it so I don't have to go outside during the nighttime or have to buy too many things. Thank you!

2007-01-13 11:22:08 · 6 answers · asked by Anonymous in Astronomy & Space

2007-01-13 11:22:07 · 2 answers · asked by bingba n 2 in Physics

Its a chemistry question..

2007-01-13 11:19:30 · 7 answers · asked by Shariq J 2 in Chemistry

I see a lot of people, mainly on the science boards, pasting answers stuff from straight from the internet without quoting it. Isn't that illegal? Shouldn't there be a rule about that? It just seems even weirder that these people often get high ratings for their answers.

2007-01-13 11:16:58 · 8 answers · asked by Vincent L 3 in Other - Science

The acceleration of a particle is defined by the relation a = -kv^2, where “a” is expressed in m/s^2 and “v” in m/s. The particle starts at x = 0 with a velocity of 9 m/s and when x = 13 m the velocity is found to be 7 m/s. Determine the distance the particle will travel before its velocity drops to 3 m/s and before it comes to rest.

Any help would be appreciated.

2007-01-13 11:15:39 · 5 answers · asked by Johnny 3 in Mathematics

Your empty hand is not hurt when it bangs lightly against a wall. Why is it hurt when it bangs the same wall while carrying a heavy load? What Netwon's law is this?

I need it for my science hw
help is appreciated
=/

2007-01-13 11:14:53 · 3 answers · asked by Anonymous in Physics

2007-01-13 11:11:18 · 8 answers · asked by aiyana 2 in Geography

What are the odds of rolling 6 of a kind from 6 dice? I just did it and wanted to know the stats

2007-01-13 11:08:21 · 7 answers · asked by impromptu_57 4 in Mathematics

Vesna Vulovic survived the longest fall on record without a parachute when her plane exploded and she fell 6 miles, 551 yards. What is this distance in meters? (Give your answer to the nearest meter.)

2007-01-13 11:06:36 · 7 answers · asked by Foxx 1 in Mathematics

2007-01-13 11:05:53 · 2 answers · asked by Anonymous in Mathematics

2007-01-13 11:04:54 · 6 answers · asked by prometida 3 in Zoology

2007-01-13 11:02:14 · 5 answers · asked by Plato 5 in Biology

While watching football one of the commentators made the statement, "That will throw some cold water on their fire". My husband then asked, does the temperature of the water really make a difference? Won't any water thrown on the fire have the same effect? My Father in Law thinks it will have a different effect. My husband and I both think water is water and will have the same effect. But I also think that cold water will also cool embers and any rocks that were in the fire. Along with the wood. Thus cooling the remains quicker.

Now I want your thoughts on this oh so pressing matter.

2007-01-13 11:00:26 · 7 answers · asked by Amy R 4 in Physics

Annie ordered 38 pizzas for the class party. Small pizzas cost $9.00 and Large pizzas cost $12.50. If the total bill was $415.50, how many small pizzas did Annie order?
I cannot seem to get my head aroundthis. The more I look the more confused I get. Help please !!

2007-01-13 10:57:17 · 9 answers · asked by Anonymous in Mathematics

2007-01-13 10:55:32 · 3 answers · asked by raven12490 2 in Zoology

blahh
science project

2007-01-13 10:53:56 · 2 answers · asked by K 1 in Zoology

2007-01-13 10:52:17 · 9 answers · asked by wish 2 in Mathematics

What makes a person feel that they are sweating all over their face neck and chest when the sun starts going down..We live in a very cold climate and high altitude.I have talked to many people that live here ..Its a valley..I have found that its pretty normal to feel this way.clammy but yet cold..It really starts around sundown and gets worse as the night progresses..Just a really bizarre feeling.My wife and I both experience this so its not just me.We have been to doctors and both healthy and in good shape..If you have experienced this and know how to handle it please let me know.We really like where we live but it gives me the creeps and makes me think that im sick although im sure im not..This is indoors mostly .. and seems to happen when there is snow coming in..other times we don't have it but we have alot lately due to it snowing almost everyday .. Please advise...

2007-01-13 10:47:52 · 3 answers · asked by Michael M 2 in Geography

can someone please explain this?

2007-01-13 10:46:43 · 5 answers · asked by Anonymous in Mathematics

I have two friends who have seen UFOs over the Barnegat Bay one sighting was in the late 1190s. Has anyone elce seen one or thought they did over this same bay? Both of my friends said with their sightings the craft was hovering over the water.One friend saw it speed off and the other said it suddenly disappeared but she really didn't see it leave...

2007-01-13 10:44:19 · 13 answers · asked by Jean 1 in Astronomy & Space

I'm working on a math problem and there is a step that involves a number outside of the radical and in the radical. How do I simplify this? Example 3/3 (/ being the radical)

2007-01-13 10:39:48 · 8 answers · asked by Edward T 1 in Mathematics