Science & Mathematics - 2 July 2007

I am teaching a high school class and i am trying to explain just how small atoms and molecules are compared to our normal scales and how the nanosecond/picosecond are such small scales....i am looking for say a video or demo that can be shown in class. If anyone knows of a link or can help it would be much appriciated.

Thanks so much

2007-07-02 05:49:06 · 4 answers · asked by nathaniel49 2 in Other - Science

This particular experiment involves the oxidation of aromatic side chain. It is used as a way to crystallize chlorobenzoic acid. I want to understand why its important not to simply use an ice bath.

2007-07-02 05:46:11 · 1 answers · asked by Anonymous in Chemistry

2007-07-02 05:45:38 · 2 answers · asked by ahpiau22 1 in Chemistry

Help, im going to live the simple life...what do I do?
Im going to a small farm somewhere in Puebla Mexico for 2 weeks.
I forget my spanish many times because I speak English all the time.
What can I do, no computers, Music, people your age, and no cell phones.
lots of chickens running around, cows waking you up in the morning.
OH no...is my life over?
I am staying with my uncles and they have a wonderful view of a big volcano.
"I hate waking up at 6 AM!"
LOL but my mom say "its an experience youll never forget" I love the city hehehehe

2007-07-02 05:42:40 · 5 answers · asked by Anonymous in Geography

2007-07-02 05:42:12 · 7 answers · asked by Dheeraj G 1 in Engineering

can someone help me.

2007-07-02 05:41:41 · 9 answers · asked by jacquierose1125 2 in Mathematics

a boat carrying illegal drugs leaves a port and travels @63km/h.a coast guard cutter leaves the port 24 min. later &travels @75km/h in pursuit of the boat.find the times each has travelled when the cutter overtakes the boat with drugs

2007-07-02 05:40:03 · 3 answers · asked by elva f 2 in Chemistry

2007-07-02 05:39:04 · 5 answers · asked by pompygal 1 in Zoology

i hate shots the site of a needle makes me week at the knees!!!i will cry, scream, kick, and refuse to take a shot!!!! but im going into middle school and i have to get the mother of all shots!!is there something else i can do? or can they give me something so im not awake when they put a needle in my skin!!!!!!!!!? HELP ME!!!!!!!!

2007-07-02 05:38:53 · 14 answers · asked by **$**Jane**$** 1 in Medicine

From the big bang came the universe with all of its complexities and from all of the complexities made there shall be questions and my question is could there be one universe that allows friction to create a fire and another universe that allows you to create a fire in a totally different way? Basically what I am asking is could there be more than one universe?

2007-07-02 05:38:29 · 7 answers · asked by Anonymous in Astronomy & Space

If p and q are non negative real numbers such that p+q=r then the min value of the expression

p+q+2pq
-------------------
1+p+q+pq

(a)

2r
---------
1+r^2

(b)
r
--------
1+r

(c)
2r^2
-------
1+r^2

(d)
2r
----------
1+r

I want to choose the correct option with less time consuming...........can we apply some trick rather than solving the big eqn ?

what would be the answer .

2007-07-02 05:34:25 · 5 answers · asked by sanko 1 in Mathematics

2007-07-02 05:33:46 · 11 answers · asked by crazytrain565 1 in Mathematics

From the book Dark Moon--Apollo & The Whistleblowers by Percy & Bennett, page 289: "As Whistle-Blower Kaysing has said: "If I am wrong in my claim that we did not go to the Moon with Apollo---any of these astronauts, with their hands-on experience and technical knowledge of the event---would be able to demolish my theory within five minutes."

"Although Kaysing is still waiting and still happy to debate the matter with any of the Apollo astronauts, so far, there have been no takers. According to David Wise, the author of The Politics Of Lies, at least 25% of the American population also think that the Moon landings were faked. The Mori poll concluded the figure was nearer to 30%!

Kaysing had worked for Rocketdyne (contractors to NASA). Kaysing was head of technical publications in the Propulsion Field Laboratory in the Simi Hills, California from 1956 until 1963. He has been blowing a loud whistle for many years and has written a book about the Apollo Hoax.

2007-07-02 05:33:20 · 22 answers · asked by ? 3 in Astronomy & Space

I have a 40' tall redwood in my backyard. I'm just curious to learn more about having such a tree having never been a homeowner, let alone tree owner, before. I know the roots grow shallow and intermingle with other roots (or other things that might be a root - a water pipe for instance), but not sure what the roots will do when then hit something like a pool?

2007-07-02 05:29:14 · 3 answers · asked by Anonymous in Botany

2007-07-02 05:28:38 · 3 answers · asked by Anonymous in Chemistry

2007-07-02 05:24:57 · 1 answers · asked by brian b 1 in Chemistry

I need to find out why a F6F-3 Hellcat reach mach-1 on a dive from 20,000 and 30,000 ft. Given information is Zero-lift drag is .0211, Wing area 334 sq feet, weight 12,441 lb, 1500 hp engine, Zero-lift drag at mach-1 .211, and propeller efficiency is .3 at mach-1

2007-07-02 05:23:50 · 4 answers · asked by Howard 1 in Engineering

thank you for taking your time to answer this question

2007-07-02 05:23:38 · 8 answers · asked by Anonymous in Physics

The perimeter of a church window is 60 inches. If the window is in the shape of a regular pentagon, what is the length of each side of the window?
A. 12 inches
B. 10 inches
C. 6 inches
D. 8 inches
a?

What is the circumference of a circle with a diameter of 30 centimeters?
A. 188.4 centimeters
B. 47.1 centimeters
C. 94.2 centimeters
D. 9.55 centimeters
c?

The spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 42 inches, how long is each spoke? Round your answer to the nearest hundredth.
A. 7 inches
B. 6.25 inches
C. 13.38 inches
D. 6.69 inches
d?
In order for a button to fit through its buttonhole, the hole needs to be the size of the button's diameter. What size buttonhole is needed for a button with a circumference of 9.42 centimeters?
A. 3 centimeters
B. 6 centimeters
C. 1.5 centimeters
D. 4 centimeters
a?

2007-07-02 05:21:49 · 10 answers · asked by wolf_in_da_room 1 in Mathematics

I am planning to take Melatonin due to my insomnia problem, but I was worried if it will affect to the med I am taking, the Seroquel.

The problem starts from here; I have been trying to get off of the Seroquel for some time, but when I stop taking the Seroquel, I can not sleep.

I am having the insomnia anyway while taking the Seroquel.

Do you think, it wiil be more difficult to quit the Seroquel if I begin taking the Melatonin?

Please help me on this.

Thanks

2007-07-02 05:17:52 · 5 answers · asked by davegesprek 1 in Medicine

Added detail: Personally, I have a thought or a theory, that the large civilisation stone circle people who lived in the British Isles, and France and Belgium, at around 2,000 - 4,000BC, and probably earlier, who didnt leave any kind of writing, had a name! from the people who lived outside that civilisation, and that name would probably have been "O", obviously representative of the shape of their circles.

Going on a bit more, it is known conventionally that writing is developed from numbers, which were known to have developed from recording debts of exchange (money). Hence from this,it can be deduced that this was a large sharing civilisation. Circles are representative of community, community bonding ie. people holding hands in a circle, which our voluntary group sector uses as their chief symbol today the world over. It means zero, no score, no competition, it means love, community, sharing. and abundance

2007-07-02 05:16:34 · 5 answers · asked by green_womble 1 in Astronomy & Space

2007-07-02 05:15:39 · 5 answers · asked by bihariraja 3 in Physics

2007-07-02 05:12:32 · 2 answers · asked by usman a 1 in Chemistry

2007-07-02 05:12:26 · 12 answers · asked by Anonymous in Astronomy & Space

Can someone give me some simple explanations of symbols used in maths such as !, ^, ∑, ∏, ∫, and any others that are important?

Thanks

2007-07-02 05:12:18 · 13 answers · asked by Cloudburst666 3 in Mathematics

2007-07-02 05:11:06 · 26 answers · asked by vgplamondon 2 in Astronomy & Space

2007-07-02 05:08:38 · 2 answers · asked by usman a 1 in Physics

i want to ask that what is between the two energy packets?

2007-07-02 05:06:03 · 3 answers · asked by usman a 1 in Physics

A lamina occupies the part of the disk x2+y2≤25 in the first quadrant and the density at each point is given by the function ρ(x,y)=3(x2+y2) .

A. What is the total mass?

B. What is the moment about the x-axis, ∫xρ(x,y)dxdy ?

C. What is the moment about the y-axis, ∫yρ(x,y)dxdy ?

D. Where is the center of mass? ( , )

E. What is the moment of inertia about the origin, ∫(x2+y2)ρ

2007-07-02 05:04:45 · 1 answers · asked by Anonymous in Mathematics

what is the specific factor of the two compounds that could distinguish one from the other? reply asap!!! tnx!

2007-07-02 05:04:19 · 3 answers · asked by louie 2 in Chemistry