Science & Mathematics - 11 December 2007

A gas expands from I to F along the three paths indicated in http://www.webassign.net/sercp/p12-5.gif

Calculate the work done on the gas along each path
(a) IAF
I know this one is -810.4

(b) IF
I dont know how to find this one!

(c) IBF
I know this one is -202.6

2007-12-11 13:39:03 · 1 answers · asked by Brittany F 2 in Physics

2007-12-11 13:38:55 · 3 answers · asked by Anonymous in Earth Sciences & Geology

2007-12-11 13:37:14 · 3 answers · asked by Anonymous in Earth Sciences & Geology

In Figure 9-22, projectile particle 1 is an alpha particle and target particle 2 is an oxygen nucleus. The alpha particle is scattered at angle 1 = 64.0° and the oxygen nucleus recoils with speed 1.10 105 m/s at angle 2 = 47.0°. In atomic mass units, the mass of an alpha particle is 4.00 u and the mass of an oxygen nucleus is 16.0 u.

(a) Find the final speed of the alpha particle.
(b) Find the initial speed of the alpha particle.

http://i175.photobucket.com/albums/w138/kacortez/hrw7_9-22.gif

2007-12-11 13:36:09 · 2 answers · asked by Anonymous in Physics

2007-12-11 13:35:27 · 1 answers · asked by Anonymous in Biology

I was asked this question and had no answer. I would like if someone could please answer.

2007-12-11 13:34:45 · 2 answers · asked by Canon 1 in Physics

2007-12-11 13:33:13 · 3 answers · asked by kondiii 1 in Mathematics

2007-12-11 13:30:13 · 2 answers · asked by Kalia 4 in Physics

2007-12-11 13:30:02 · 9 answers · asked by Anonymous in Zoology

1. I am confused about max/min & 1st/2nd derivative. I thought the first derivative gives you max/min; but does the 2nd derivative just verify it or something?

2. I need help with this related rates problem (like how to set it up/START it):
V=1/3(pie)r^2h
*If you pour liquid in a container at 6 cubic feet per minute; the container has a height of 7 feet and the radius is 4 feet. What is the rate the liquid is rising in the container when the liquid is 3 feet deep?

3. How does a tangent line 'approximation' compare to finding the equation of a line tangent to a curve?

4. How are the mean value theorem and the intermediate value theorem related...in terms of derivatives?

5. If you have a limit problem, how do you know when to use the squeeze/sandwich theorem??? In general, WHEN do you use the aforementioned theorems?

6. How do you find the length of an interval (in regards to the bisection method)?

Thanks!

2007-12-11 13:29:28 · 1 answers · asked by StarrySprinkes 3 in Mathematics

i conducted this experment for my science project. between. tap water, orange juice, and sprite soda which dissolve a pill (motrin 1b) fatest....tap water won...the problem is i dont know why does anybody know so i can do my conclusion?

2007-12-11 13:28:56 · 1 answers · asked by love* 1 in Chemistry

would you go for it?

Would you want to have more brain cells? Especially because of pollution and toxins that kill the brain cells we need to obtain an education?

2007-12-11 13:25:48 · 2 answers · asked by ¤Elva¤ 4 in Medicine

2007-12-11 13:25:47 · 16 answers · asked by z0nezero 1 in Mathematics

2007-12-11 13:24:33 · 5 answers · asked by GHULAB D 1 in Botany

An object attached to the end of a string
swings in a vertical circle of radius 2.6 m as
shown. At an instant when theta=31 degrees, the speed
of the object is 13 m/s and the tension in the
string is 60 N.
The acceleration of gravity is 9.8 m/s^2 :

What is the mass m of the object? Answer
in units of kg.

2007-12-11 13:23:44 · 1 answers · asked by Anonymous in Physics

Have you ever watched the news about wild fire in California? Have you wonder what is the basic elements for fire to survive? Well just applied your h.s. physics into the equation. Fire needs oxygen to survive. The atmosphere on earth controls the element of h20.

Now I am going to go and applied this method and use it in the universe, space, and galaxy. The question I do not know is what element(s) do their atmosphere contain? If on earth, we need h20 to survive, then what do the universe needs to survive all this time and infinity? There must be somekind of space-atmostpheric thing that keeps them growing, right?

Any scientists could answer to my question would be a great help.

2007-12-11 13:21:14 · 6 answers · asked by Anonymous in Astronomy & Space

in a city like Fremont, CA

2007-12-11 13:21:00 · 9 answers · asked by Nikki 3 in Earth Sciences & Geology

carnivores live in san Francisco ??
i don't think so

2007-12-11 13:10:29 · 2 answers · asked by Anonymous in Geography

2007-12-11 13:09:52 · 1 answers · asked by MICHELE W 1 in Earth Sciences & Geology

what would be the difference in the 2 when heated

2007-12-11 13:04:36 · 19 answers · asked by Anonymous in Engineering

see the image at this link:
http://i68.photobucket.com/albums/i11/forealms/chem.png

2007-12-11 13:03:15 · 4 answers · asked by Jared W 2 in Chemistry

Distribute twenty apples among ten students in class, 20/10 = 2 apples for each student
And, distribute ten apples among ten students in class, 10/10 = 1 apple for each student
Now, distribute ten apples when there is zero student (no students in the class). 10/zero= then why it is always infinity for each student. And why is not = 0 or 10 ( because nothing is distributing and 10 apples are still there waiting for distribution) OR impossible division.

2007-12-11 13:01:14 · 5 answers · asked by ? 3 in Mathematics

solve each equation

m(squared)-24m=-144

determine whether each trinomail is a perfect square trimonial if so factor it. t(squared)+16t-64

2007-12-11 12:59:44 · 1 answers · asked by Anonymous in Mathematics

2007-12-11 12:58:45 · 0 answers · asked by Simone P 1 in Mathematics

Choose the item in colimn b that bets matches the term in column a


a.granite b.mixture of minerals
a.quarry
a.ore
a.marble
a.sandstone
a.limestone
a.rock b.formed from animal shells
b.formed for weathered sediments
b.place from which certain rocks are taken
b.an igneous rock
b.mineral that contains usable amounts of a metal
b.a metamorphic rock

2007-12-11 12:57:04 · 3 answers · asked by Anonymous in Earth Sciences & Geology

help me please!!!!! help me please!!!!! help me please!!!!! help me please!!!!! help me please!!!!! help me please!!!!! help me please!!!!! help me please!!!!! help me please!!!!! help me please!!!!! help me please!!!!!

2007-12-11 12:56:23 · 7 answers · asked by im_iz bust it baby>3 2 in Botany

2007-12-11 12:52:43 · 2 answers · asked by coolkids52001 1 in Other - Science

I was doing some searches concerning paranormal, etc. and found a lot of what appeared to be older pictures of mediums, psychics, etc. producing entities from their noses, etc. supposedly made from "ectoplasm". I assume that these were recognized psychics of the time. One photo showed what appeared to be a full body apparition appearing out of the psychics nose, another a face, etc.

Do any modern day psychics ever duplicate this phenomena, or was this just an old claim, and ectoplasm has now evolved to a different form, etc? Was any of this material ever scientifically analyzed to see what it was?
Are there any newer pictures of present day psychics doing this? Just wondering.

http://ghosts.monstrous.com/extrusion.htm
http://www.prairieghosts.com/ectoplasm.html

2007-12-11 12:51:40 · 6 answers · asked by madcat 5 in Paranormal Phenomena

Consider the sinusoidal wave function:
y= 15cous (.157x-50.3t)

At a certain instant let point A be at the origin snf point B be the first point along the x axis where the wave is 60.0 out of hase with A. What is the coordinate of B?

Please help me with this question, by showing the steps to find the answer.

Thanks in advance.

2007-12-11 12:51:08 · 1 answers · asked by Anonymous in Physics

A) a phosphate, sugar and a lipid
B) a protein, sugar, and a base
C) a phosphate, sulfur, and a base
D) a phophate, sugar, and a base

2007-12-11 12:50:12 · 7 answers · asked by Kat 1 in Biology