Science & Mathematics - 25 January 2007

2007-01-25 16:27:13 · 4 answers · asked by Anonymous in Weather

How high is Nuclear physics in education level? I willl be a junior next year in high school and i might take this. Is it hard?

2007-01-25 16:27:03 · 1 answers · asked by gowrifleman 2 in Physics

AlCl3 Show me the covalent bond

2007-01-25 16:26:03 · 2 answers · asked by veranda b 1 in Biology

2007-01-25 16:25:15 · 14 answers · asked by Rachel 3 in Zoology

2007-01-25 16:24:20 · 8 answers · asked by bin25 1 in Physics

It's something about.. -16m or... something strange.. I forgot the word for this too...

2007-01-25 16:22:34 · 7 answers · asked by SafiMoyo 2 in Physics

Don't know how to solve for a

-4a-8=-3a+7

2007-01-25 16:21:07 · 9 answers · asked by Arnold 3 in Mathematics

Please show your work

2007-01-25 16:20:22 · 7 answers · asked by laweezer08 1 in Mathematics

2007-01-25 16:19:01 · 4 answers · asked by sadaw a 1 in Geography

A particle that moves along a straight line has velocity v(t)=t^(2)e^(-2t) meters per second after t seconds. How many meters will it travel during the first t seconds?

2007-01-25 16:17:19 · 5 answers · asked by Shayna 2 in Mathematics

2007-01-25 16:16:10 · 7 answers · asked by mallela chinna 1 in Zoology

Please help...not good with math

2007-01-25 16:15:06 · 15 answers · asked by Anonymous in Mathematics

The route followed by a hiker consists of three displacement vectors, (vector)A, (vector)B and (vector)C. Vector A is along a measured trail and is 1550 m in a direction 25.0˚ north of east. Vector B is not along a measured trail, but the hiker uses a compass and knows that the direction is 41.0˚ east of south. Similarly, the direction of vector C is 35.0˚ north of west. The hiker ends up back where she started, so the resultant displacement is zero, or (vector)A+ (vector)B+ (vector)C =0. What are the magnitudes of vectors B and C?

So far I've come up with the Xcomponent of A being 1404.8 and the Ycomponent is 655.1. I also figured vector B to pointing at 319˚ (in reference to the coordinate plane) and vector C is pointing at 145˚.

Can anyone please give me any help possible?

2007-01-25 16:13:34 · 2 answers · asked by vwmanxter 2 in Mathematics

What is the importance of the dipole nature of water to the chemistry of life?

2007-01-25 16:13:20 · 5 answers · asked by Anonymous in Biology

2007-01-25 16:13:16 · 6 answers · asked by shelia c 1 in Chemistry

Please tell about it using isotopes.
Thank you so much!

2007-01-25 16:12:34 · 6 answers · asked by Anonymous in Chemistry

Let Q be the region bounded by the graph of the parabola y=1-x^2 and the x-axis. There is a line y=c that divides Q into two regions of equal volume when Q is rotated around the x-axis. Find the value of c.

does anyone know how i would go about solving this?? any help would be wonderful! thanks!!

2007-01-25 16:12:27 · 3 answers · asked by leksa27 2 in Mathematics

2007-01-25 16:12:20 · 8 answers · asked by savannah_banana03 1 in Mathematics

In the following case: 1+2+3+.....+36=

2007-01-25 16:11:56 · 6 answers · asked by emanuel s 1 in Mathematics

HELP!

2007-01-25 16:09:32 · 4 answers · asked by savannah_banana03 1 in Mathematics

ok its a word problem if you have $16.00 on line 20 and you have $19.00 on line 15 and my question is when its asked you subtract line 20 from line 15 which number goes on top in the problem...call me dumb (dont care) just want an answer ....thanks for your help in advance!

2007-01-25 16:08:58 · 4 answers · asked by annv06 2 in Mathematics

A 35kg trunk is dragged 10m up a ramp inclined at an angle of 12deg to the horizontal by a force of 90N applied at an angle of 20deg to the ramp. At the top of the ramp, the trunk is dragged horizontally another 15m by the same force. Find the total work done. (What is the process of solving this? Using Dot Product)

2007-01-25 16:08:34 · 2 answers · asked by Anonymous in Mathematics

Hitler was trying to produce a master race. He only did what women do every time they pick a partner to reproduce. Strong, good looking, smart. It's how evolution works, Hitler was just trying to speed it up. For example "hairy men". Most women don't like hairy men. Therefor they won't breed with them, and eventully there will be more bare cheasted Homo Sapiens and hairy men will become extinct.

Now he went overboard when he killed the jews and such. Obviously. But sientists kill off bad embryos so as not to pass a defective gene onto another human being. Is this not the same thing?

Technology has evolved greatly in the past 200 years. Isn't it about time we evolve the human race ourselves instead of waiting for evolution to do it?

2007-01-25 16:08:21 · 10 answers · asked by Jonathan S 2 in Biology

First problem i need help with: (x-3)(x+7)-(x+1)(x+5)= 0
and
Express as a polynomial: The square of n^2+2n-1
The cube of a-3
Subtract the product of 2x-y and x-2y from x^2 +y^2
If anybody can help with any of them i would greatly appreciate it. Thank you!

2007-01-25 16:08:17 · 4 answers · asked by gurlygurl 3 in Mathematics

a pillar 12 feet tall casts a shadow 4 feet long on the ground. if the pillar was 15feet tall. how many feet in length would the shadow be?

2007-01-25 16:07:55 · 6 answers · asked by emanuel s 1 in Mathematics

Any kind of liqiud, that can be poured into a confined space, that will harden quickly, polymers,crystals...etc..........

2007-01-25 16:01:51 · 4 answers · asked by chem info 1 in Chemistry

Hello circuit friends, I am not a electronician. I have a transistor BC 549 and a circuit diagram where its symbol is printed but I dont know which one of the three leads is collector or emitter. I have both digital and anlog multimeters. is it possible to find out which is emitter with these? Please help me !

2007-01-25 16:01:44 · 2 answers · asked by Vertiiical Axiiis 2 in Physics

i have everything but this info for my science project and i have been looking all week but apperntly i am not lookin in the right place so can you please either leave me what you know about the chemicals listed below or site urls that has the info 10 points to the person that gives the most info on the most chemicals here are the chemicals
sodium benzoate
sodium metabisulfite
caffeine
citric acid
phosphoric acid

and if any one knows the full ingredent list for clorox bleach that would be super helpful (first person to give the full list gets the ten points!!!!!!!)

2007-01-25 16:01:10 · 1 answers · asked by babygirl629 1 in Chemistry

I mean when they tell u a spefic thing is going 2 happen at a certain day and time. has it really happened to anybody?

2007-01-25 16:00:37 · 22 answers · asked by Lisa Z 1 in Physics

2007-01-25 15:56:39 · 4 answers · asked by Kazzy 2 in Biology