Science & Mathematics - 24 November 2007

How much work is done in moving Avogardo's number of electrons from an inital point where the electric potential is 9.00V to a point where the potential is -5V?

This is how I attempted the question
Delta V = V2 - V1 = -5 - 9 = -14V
W = U = Vqe

2007-11-24 06:11:00 · 2 answers · asked by Anonymous in Physics

If someone donates blood to another person,it may lead to alteration of DNA of the recipient.When recipient male or female person gives birth to a child,it may lead to the genetic modification in the offspring,as per the blood donor^s.

2007-11-24 06:07:56 · 6 answers · asked by praveen s 2 in Medicine

This is a science experiment ive been so crazy about lately! i can't get it right!!!!
okay. My point here is to see which energy sources produce the highest voltage.

im using a 3 volt battery, a dc generator, a voltaic cell[vinegar], and the human body[static] .

problems are: can you make a simple generator? i just want something using electromagnetism to light up a lightbulb! and how can i measure the voltage produced by the human body[static]?
[also for the body one, is there another way to light up a lightbubl using static?]

please, tell me where to place the voltmeter and with specific directions on how to measure everything/
and also tell me personnally what you think of this project.

2007-11-24 06:07:15 · 2 answers · asked by Anonymous in Engineering

and they showed a sneak peak about a planet with alot of water on it. What is that planet called again?

2007-11-24 06:05:00 · 2 answers · asked by Anonymous in Astronomy & Space

2007-11-24 06:03:47 · 2 answers · asked by IcanHelpyou:) 3 in Chemistry

as you approach the speed of light time slows down, and at light speed time stops. so wouldn't that meant that light travels instantaneously.

2007-11-24 06:03:37 · 5 answers · asked by Anonymous in Physics

2007-11-24 06:03:02 · 1 answers · asked by bobsuealex@verizon.net 1 in Botany

thank you!

2007-11-24 06:02:49 · 3 answers · asked by dark_angel 1 in Mathematics

Please Help me out here!! My Teacher is prone to making mistakes in the problems so even if it doesn't make any sense answere it with "There's a mistake."

2007-11-24 06:01:01 · 10 answers · asked by Anonymous in Mathematics

find the median of 463, 582, 401, 533, 457, 514, 438

2007-11-24 05:58:10 · 4 answers · asked by Anonymous in Mathematics

A) H2O(g)

B) NaCl(l)

C) NaCl(s)

D) H20(s)

2007-11-24 05:55:59 · 4 answers · asked by yoooo 4 in Engineering

2007-11-24 05:54:42 · 6 answers · asked by Anonymous in Earth Sciences & Geology

I'v made a very simple telescope:
two lenses concaved one and a convex.
but it is not strong enough.
the convex has the focal length 25cms and a diameter of 50mm.

what should I do to gain more powerful telescp, more than 5 times.
please give me the focal lengths and diameteres of the suitable lenses.

2007-11-24 05:51:46 · 1 answers · asked by Jamal 3 in Astronomy & Space

2007-11-24 05:50:14 · 5 answers · asked by IcanHelpyou:) 3 in Physics

2007-11-24 05:47:34 · 3 answers · asked by mugen_ex 1 in Earth Sciences & Geology

There isn't anything else to add really. Any help would be GREATLY appreciated :)

2007-11-24 05:42:17 · 2 answers · asked by Sienna 1 in Mathematics

A spring has a force constant of 600.0 N/m.

(a) Determine the potential energy stored in the spring when the spring is stretched 3.90 cm from equilibrium.

(b) Determine the potential energy stored in the spring when the spring is stretched 2.99 cm from equilibrium.

2007-11-24 05:38:44 · 1 answers · asked by Anonymous in Physics

Would it be smart to send all our toxins and garbage to the sun? Everything would burn up without even hurting the sun! Then at least we could clean up our poor Earth. Or do you think there has to be some kind of ramifications? If so, like what? Or is it true that we are all brilliant at least once a year?!

2007-11-24 05:38:05 · 14 answers · asked by gmoney 3 in Astronomy & Space

A 50.0 kg diver steps off a diving board and drops straight down into the water. The net force when in the water is an upward 1350 N. If the diver comes to rest 4.8 m below the water's surface, what is the total distance between the diving board and the diver's stopping point underwater?

2007-11-24 05:37:44 · 1 answers · asked by Anonymous in Physics

2007-11-24 05:33:48 · 4 answers · asked by Azubuike O 1 in Engineering

WHICH MATERIAL MAKES THE BEST HIGHWAY SOUND BARRIER?

2007-11-24 05:33:36 · 2 answers · asked by Anonymous in Other - Science

does increasing the temperature favor the exothermic or endothermic reaction in an equilibrium system? Explain.

2007-11-24 05:33:29 · 2 answers · asked by $Cashmoney$ 1 in Chemistry

does increasing the temperature favor the exothermic or endothermic reaction in an equilibrium system? Explain.

2007-11-24 05:32:41 · 1 answers · asked by $Cashmoney$ 1 in Chemistry

Please explain the theory. The guys feel better when a conversation is technical.

2007-11-24 05:31:14 · 2 answers · asked by Margy 3 in Physics

2007-11-24 05:30:58 · 1 answers · asked by bilinmz 1 in Chemistry

I just want the idea on what to do.
The real question I want to solve is this:
What is the pH if I add .01 moles of NaOH to a buffer which has a pH of 3.44?

2007-11-24 05:28:48 · 3 answers · asked by TurkishGamer13 3 in Chemistry

2007-11-24 05:23:08 · 10 answers · asked by Boogie 2 in Mathematics

I think it is because of the white coating. It stores energy and then releases it as light, but, I could not explain the flicker. Do you know why?

2007-11-24 05:17:49 · 3 answers · asked by Anonymous in Physics

http://www.telescope.com/control/product/~category_id=reflectors/~pcategory=telescopes/~product_id=09184

2007-11-24 05:10:31 · 5 answers · asked by Jansen J 4 in Astronomy & Space

first spider i ever seen in my house in like 8 years and it was on my shoulder and scared the hell out of me i think it was white or brown but down know cause i killed it to fast but it was like the size of a half dollar coin or a little bigger, i live in oakland CA and i reallly wanna know what that spider is

2007-11-24 05:07:30 · 2 answers · asked by Anonymous in Zoology