Science & Mathematics - 16 September 2007

2007-09-16 10:07:56 · 7 answers · asked by scott 3 in Astronomy & Space

For example: sin 300, cot 315, cos 180.

2007-09-16 10:07:34 · 2 answers · asked by metro900 3 in Mathematics

a. a comet’s path through the solar system
b. the height of tides during a full moon
c. an iridium-laden rock layer produced by meteorites
d. the amount of solar energy absorbed by a tree

2007-09-16 10:03:55 · 2 answers · asked by andrew b 1 in Earth Sciences & Geology

I've heard that in our solar system there are no eliens.
Do you think there are eliens in onother solar system, and if they do exist why do they not contact with us? Because I am sure if they do exist their technology will be much higher than ours. why dont they just stay here for everybody to see.
And one more question if they do exist do you think they believe in god or in something else?

2007-09-16 10:00:01 · 5 answers · asked by Anonymous in Astronomy & Space

all i know is that this is a quadratic inequality inequality and we have to write the solution in interval notation

2007-09-16 09:59:46 · 8 answers · asked by Negra 2 in Mathematics

I already heard of telekinesis, pyrokinesis, electrokinesis(favorite), hydrokinesis, and aerokinesis. Are there more?

2007-09-16 09:58:35 · 5 answers · asked by Walter 5 in Parapsychology

2007-09-16 09:56:57 · 8 answers · asked by AppledVolaxin 2 in Zoology

you know about the alien interview. does the alien talk at all and were can i watch the movie. and what happened to the alien after the interview. give me a website

2007-09-16 09:55:11 · 5 answers · asked by Dude 3 in Astronomy & Space

2007-09-16 09:54:11 · 7 answers · asked by Anonymous in Engineering

A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 12 m/s skates by with the puck. After 3.0 sec, the first player makes up his mind to chase his opponent. If he accelerates uniformly at 4.0 m/s squared, how long does it take him to catch his opponent??

Answer is 8.2 sec.
How do you get that?

2007-09-16 09:49:36 · 3 answers · asked by J 2 in Mathematics

can someone show me an easy way to find the LCM of a set of numbers

2007-09-16 09:48:10 · 3 answers · asked by Anonymous in Mathematics

graph the inequality in a corrdinate plane

x<=6

i know its going to be a vertical line but are u suppose to shade left or right?

if the statement is true...do you shade the left side always? and if its false then do u shade the right side everytime?

2007-09-16 09:47:53 · 7 answers · asked by Anonymous in Mathematics

How do you find the domain of a derivative. I did a problem where i found the derivative of f(x)=.5x-1/3 and i got 1/2. Now how do i find the domain of "1/2".

Do I find the domain of the tangent line which has a slope of 1/2?

Thanks!

2007-09-16 09:47:25 · 4 answers · asked by Anonymous in Mathematics

vertical spring of constant, 19.6 N/m - (A) determine the maximum compression of the spring. (B) what is the answer to part A, if the putty is dropped onto the spring from a height of .500 m from the top of the spring?

I need step by step instructions on how the answer for B is done. I have part A just need help step wise to resolve B.

2007-09-16 09:45:30 · 1 answers · asked by JustMe1962 3 in Physics

Are microwaves dangerous. If so, how?
Is it the light that can cause cancer or somthing? Or anything other dangers?

Also do they have any medical uses?

2007-09-16 09:44:11 · 11 answers · asked by Anonymous in Physics

what is the maxium mass of CO2 that can be produced by the cumbustion of _____g of ethonal how do you do this problem?

2007-09-16 09:42:00 · 2 answers · asked by Anonymous in Chemistry

2007-09-16 09:41:41 · 7 answers · asked by moonbow 6 in Astronomy & Space

I want to study astronomy (stars, galaxies,comets... ) when i grow up. Does this mean that I'll be a physicist, astrophysicist or an astronomer. But I thought that astronomers actually go outside into space, not study them. I'll probably want to work for NASA, but what would I be doing in NASA? It's kinda complicated for me. Thanks for answering.

2007-09-16 09:40:10 · 3 answers · asked by Anonymous in Astronomy & Space

the question should read five and one quarter divided by 7over 2.

2007-09-16 09:39:39 · 10 answers · asked by Anonymous in Mathematics

A ball bearing rolls backwards and forwards on the vertical track shown in the diagram:
http://i14.photobucket.com/albums/a348/Drakhys-2/slope4a.gif
It always starts to roll from the top of the track, either at the left or at the right. The shadow of the ball is seen on the horizontal ground beneath the track, and the position of the shadow is measured along the ground, with the origin at the bottom of the track at point O. The four statements below concern the motion of the shadow. Identify whether each is true or false.


1. For motion from right to left, the velocity and the acceleration at the point B are both negative.
2. For motion from left to right, the position and the acceleration at point B are both negative.
3. For motion from left to right, the position and the velocity at the point A have opposite signs.
4. For motion from right to left, the position and the velocity at point A are both negative.

I said: F, T, F, T. Is this correct. If not, why?

2007-09-16 09:39:30 · 2 answers · asked by Bikki 3 in Physics

i no 9-2/11=9 9/11 but i wanna know how you get to 8 9/11

2007-09-16 09:29:09 · 7 answers · asked by cutie2007 2 in Mathematics

oil hardening wood

2007-09-16 09:26:10 · 2 answers · asked by Anonymous in Engineering

Differentiate the function.

y = sqrt(x)(x-1)

2007-09-16 09:25:32 · 2 answers · asked by Anonymous in Mathematics

I have often seen a textbook on ebay titled "Calculus and Analytic Geometry" and was wondering what level of calculus would that book be assigned to. In other words, is it calculus 3 or 4 or what?

2007-09-16 09:25:05 · 4 answers · asked by journey 1 in Mathematics

this was quite a few weeks ago, and there is probably no one that can give me this answer, but it doesnt hurt to try.

there was a program on either the discovery channel or the history channel (although im pretty sure it was discovery) that had a program about Stephen Hawking on it. during one part of the program it was talking about some dr. or someone that did psychological experiments on people in rooms or something...and i did not quite catch his name.

if anyone has seen the program or would somehow know this, it would really help cause i have been thinking about this for weeks and weeks. i know that its not really enough information, and ive tried checking the discovery website, but to no avail. so, please, dont give me answers about how you dont know. i just want some help!!! haha.

thanks in advance. (and good luck!)

2007-09-16 09:19:33 · 2 answers · asked by The Joy Massacre 2 in Astronomy & Space

2007-09-16 09:18:16 · 1 answers · asked by deannahndrsn 2 in Mathematics

2007-09-16 09:14:33 · 4 answers · asked by M.K 2 in Astronomy & Space

2007-09-16 09:11:53 · 2 answers · asked by princesstinachan 1 in Chemistry

1. 6h+5 (h-5)
2. -5d+3 (2d-7)
3. 7+2 (0.20a - 3)
4. -6 - 3 (2k+4)

2007-09-16 09:10:59 · 12 answers · asked by Anonymous in Mathematics

2007-09-16 09:09:52 · 7 answers · asked by poulocsange 1 in Earth Sciences & Geology