Science & Mathematics - 15 January 2007

Simplify.


a^1/2 (a^3/2 – 2a^1/2)


The 1st letter a has an exponent of 1/2
The 2nd letter a has an exponent of 3/2
The 3rd letter a has an exponent of 1/2

2007-01-15 15:08:25 · 5 answers · asked by Anonymous in Mathematics

If the thread layers are red, brown and green from top to bottom which layer will come into focus first if you are using the scope correctly

2007-01-15 15:06:46 · 2 answers · asked by Proud Moma!!! 2 in Biology

I personally don't think it is possible, but I'm really curious as to what all the of the cool people like you think.

2007-01-15 15:06:31 · 14 answers · asked by The FudgeMaster 2 in Physics

2007-01-15 15:04:48 · 6 answers · asked by Sheldon K 1 in Geography

2007-01-15 15:04:38 · 21 answers · asked by Junior C 1 in Mathematics

2007-01-15 15:04:34 · 2 answers · asked by Angela 1 in Mathematics

2007-01-15 15:02:47 · 4 answers · asked by saira n 1 in Chemistry

3+3/2= 4.5
why the calculater giving this answer for the question without giving the answer as 3... i heared there r some rules for solve tht question... what r they? plese some one explain me them.... thanx in advance...

2007-01-15 15:01:01 · 7 answers · asked by black space 1 in Mathematics

how does the flow rate of charge in a parallel circuit divide if all parallel branches have the same resistance? if different branches have different resistance? Also is a battery a device which supplies a constant current to a circuit? explain.

2007-01-15 15:00:55 · 4 answers · asked by John L 1 in Physics

My friend and I are debating

2007-01-15 15:00:38 · 4 answers · asked by will p 1 in Physics

2007-01-15 14:59:16 · 6 answers · asked by Jim R 3 in Weather

2007-01-15 14:57:48 · 10 answers · asked by Anonymous in Zoology

how does the appendix help the digestive system
how is it important to the digestive system

2007-01-15 14:54:44 · 11 answers · asked by angelice M 1 in Biology

2007-01-15 14:54:14 · 9 answers · asked by Anonymous in Physics

As in How could this knowledge help you or harm you?

2007-01-15 14:53:37 · 14 answers · asked by Mika 2 in Botany

2007-01-15 14:50:47 · 5 answers · asked by Cinnamon 6 in Medicine

HELLPP!! ALSO WHO IS LINNAEUS?

2007-01-15 14:50:21 · 5 answers · asked by ♥ rararararara 1 in Botany

2007-01-15 14:50:12 · 4 answers · asked by Kelly B 1 in Chemistry

I have a test on Wednesday and I need to know the defintion of chemical bonding. I've tried the internet and I couldn't find a simple definition. Thanks! ♥

2007-01-15 14:50:04 · 1 answers · asked by asdfgh. 4 in Chemistry

how?im suppose to write a paragraph on how transformations are used in life

2007-01-15 14:48:31 · 4 answers · asked by lol!?? 3 in Mathematics

2007-01-15 14:47:20 · 6 answers · asked by singervv01 1 in Mathematics

2007-01-15 14:46:38 · 17 answers · asked by trout 1 in Geography

I know about the gases and the sun being a big ball of fire.But what I don't understand is everything that is on fire burns out due to nothing left to burn.shouldn't the sun burn until there is no planet left to burn?

2007-01-15 14:46:36 · 28 answers · asked by Teenie 7 in Astronomy & Space

determine the possible frequencies of vibration by assuming a solution fo the form x1=a1coswt x2=a2coswt

2007-01-15 14:46:28 · 2 answers · asked by stumped on physics 2 in Physics

I already know the answer is approx 1m. What I really need is guidance on how to get there. I know that a second of arc is 1/3600 of a degree. I worked the equation using that (1/180 based on 2 seconds of arc) and the tangent function, but that was incorrect.

Any help and direction is appreciated.

2007-01-15 14:44:53 · 2 answers · asked by Linda T 1 in Physics

2007-01-15 14:44:16 · 4 answers · asked by Anthony I 2 in Engineering

Hi,

A plastic rod with linear charge density lambda is bent into a quarter circle. The quarter circle is placed in the 3rd quadrant in a way that if 3 more quarter circles were placed on the plane, the would form a whole circle (one quarter circle in each quadrant). The plastic rod has a positive charge all over. Find the electric field at the origin.

This might be hard to picture so I tried my best in paint to represent what is going on: http://i137.photobucket.com/albums/q208/infinitbelt/Figure2649.jpg


QUESTIONS:

a. Write expressions for x and y components of the electric field at the origin due to a small piece of charge at angle theta.

b. Write, but do not evaluate, definite integrals for the x and y components of the net electric field at the origin.

c. Evaluate the integrals and write Enet in component form.


Any help would be greatly appreciated!

Thanks!

2007-01-15 14:42:30 · 2 answers · asked by Anonymous in Physics

had ppl come up with in the time before us saying that the world was going to end?is the dinosour thingy about an asteroid hitting the earth real.should we actually worry about it because i mean theyre predicting that an asteroids going to hit but has it actually happened before?if it hasnt why should we say its going to happen in the future

2007-01-15 14:42:30 · 9 answers · asked by <-(‾`v ‾)-> 2 in Astronomy & Space

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2007-01-15 14:38:47 · 4 answers · asked by Girl 2 in Earth Sciences & Geology