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Science & Mathematics - 7 November 2007

[Selected]: All categories Science & Mathematics

Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

The diagram represents a portion of the esophagus. Which is a correct statement about the process shown in the diagram?

1) It transports nutrients within the digestive tract.
2) It must occur prior the mechanical digestion of food in the oral cavity.
3) It emulsifies fats for hydrolysis in the small intestine
4) It increases water absorption by the esophagus

this is the picture:

http://schoolisland.com/review/Courses/le/bio106.gif

thanks.

2007-11-07 07:58:45 · 3 answers · asked by jesixishere 1 in Biology

2007-11-07 07:58:20 · 14 answers · asked by Aurelia 3 in Mathematics

help me..I need it ASAP

2007-11-07 07:56:41 · 8 answers · asked by group5 1 in Engineering

Compute the following integral

∫ e^(-x-y) with respect to y from 0 to infinity.

2007-11-07 07:54:51 · 1 answers · asked by cornzxo1 1 in Mathematics

2007-11-07 07:52:30 · 6 answers · asked by cuppa_tea63 2 in Biology

2007-11-07 07:52:19 · 2 answers · asked by brewers07 2 in Medicine

my daughter is in the second grade and she have science roject and i need a little help! Thank You!

2007-11-07 07:51:14 · 14 answers · asked by lashawnj30 1 in Botany

show step by step how to find the limit using L' hopitals rule limit x-->0 (x2^x)/ (2^x-1)

P.S I have done my homework but this question for test review and I am getting wrong answer even when i used LN to find the answer.
Thank you for your help.

2007-11-07 07:50:22 · 2 answers · asked by Devils advocate 1 in Mathematics

If I got 117 out of 150, and the median is 124 and the mean is 122.1 and the standard deviation is 13. What is the diff between the median and mean? What is my letter grade probably be?

2007-11-07 07:47:07 · 4 answers · asked by naingzaw 2 in Mathematics

its 65 degrees here in north florida and with the wind chill it feels like 55 degrees....very bone chilling....not used to this...anyone suspect we are in for a hard winter this year?....last year seemed kind of mild to me......noooooo i dont like cold weather...what are your temp and skies like right now and what part of the country are you in?

2007-11-07 07:46:59 · 14 answers · asked by cookiesmom 7 in Weather

ive yawned even when someone has on tv...

2007-11-07 07:44:30 · 26 answers · asked by Anonymous in Other - Science

2007-11-07 07:43:09 · 22 answers · asked by James R 1 in Astronomy & Space

I haven't decided which one I want to do, I like them both. Which one makes more money? I really have a passion for both.

2007-11-07 07:41:23 · 2 answers · asked by Alex Borges 1 in Engineering

Is Anthracite a mineral found in New Mexico or a coal? All I can find is that it's a mineral coal.

2007-11-07 07:40:04 · 8 answers · asked by Anonymous in Earth Sciences & Geology

2007-11-07 07:37:20 · 7 answers · asked by TheElite 3 in Geography

This question has pondered through my puny infant mind for at least a millenia.

2007-11-07 07:37:20 · 16 answers · asked by Anonymous in Other - Science

9y + 5 = 2y + 3 with working out really easy one (but not for me)

2007-11-07 07:36:45 · 13 answers · asked by Anonymous in Mathematics

If you could show work it would be awesome, I can't remember how to do these...

Mandy invests $800. She invests part of it a fund that pays 9% per annum and the rest in a fund that pays 5% per annum. After one year, she had earned $54 interest. How much did she invest in each fund?

2007-11-07 07:34:42 · 6 answers · asked by Anonymous in Mathematics

Thanks!!

2007-11-07 07:30:51 · 2 answers · asked by delilah123 4 in Engineering

Whats the best time to go out and look?

2007-11-07 07:30:29 · 6 answers · asked by curious_inquisitor 1 in Astronomy & Space

A car with a velocity of 27 m/s slows down at a rate of - 8.5 m/s2 to a stop in a distance
of 43 m on a dry road. The same car traveling at 27 m/s slows down at a rate of -6.5 m/s2 to a stop on a wet road.
a. How much farther does the car travel on the wet road before coming to a stop?
b. What maximum car speed will allow the car traveling on the wet road to stop in a distance of 43 m?


. A car traveling at 14 m/s encounters a patch of ice and takes 5.0 s to stop.
a. What is the car’s acceleration?
b. How far does it travel before stopping?


THANKS

2007-11-07 07:29:09 · 2 answers · asked by Bill B 1 in Physics

5 causes please

2007-11-07 07:26:40 · 5 answers · asked by Anonymous in Earth Sciences & Geology

If yes, what is the best kind to use?

2007-11-07 07:26:35 · 12 answers · asked by Sherry 1 in Paranormal Phenomena

Can you find two 3-digit numbers that add to a third 3-digit number, such that all the digits from 1 through 9 are used exactly once?

I don't have an answer. The puzzle occurred to me as I was answering Mandy's question http://answers.yahoo.com/question/?qid=20071107115447AAkD2Ah

2007-11-07 07:25:56 · 7 answers · asked by DWRead 7 in Mathematics

2007-11-07 07:24:10 · 3 answers · asked by osnap 1 in Mathematics

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