Science & Mathematics - 1 September 2007

how does it Work??

2007-09-01 23:57:40 · 5 answers · asked by micah :P 2 in Physics

Hi, for my GCSE DT courswork I need to make a piece of wood move outwards from a cupboard. I thought that there was such a thing as an electric pistion, but it seems not.
I did some research on wikipedia and found a linear motor. I found this, (http://www.zaber.com/products/product_group.php?group=T-LLS)

However this is too much money for me,or my school, so I either need a cheaper alternative or an easy(ish) way of making my own.

The sizes and weights are the same as the link above, Thanks.

2007-09-01 23:50:21 · 1 answers · asked by fenfe1 1 in Engineering

2007-09-01 23:49:23 · 3 answers · asked by roberto a 2 in Engineering

2007-09-01 23:40:49 · 4 answers · asked by Anonymous in Engineering

West Side walk it OUT out
North Side walk it OUT out
East Side walk it OUT out
South Side walk it OUT out

2007-09-01 23:39:10 · 7 answers · asked by Government Cheese 3 in Geography

2007-09-01 23:33:41 · 8 answers · asked by dark knight 1 in Physics

2007-09-01 23:30:41 · 14 answers · asked by Anonymous in Zoology

2007-09-01 23:30:38 · 9 answers · asked by dalehyd 1 in Astronomy & Space

2007-09-01 23:30:17 · 5 answers · asked by shra_taurus 1 in Geography

2007-09-01 23:26:12 · 6 answers · asked by Mr. Nobody 5 in Other - Science

The tendency of the universe to gradually drift toward total disorganization.

2007-09-01 23:06:49 · 2 answers · asked by galacticsleigh 4 in Physics

ok so i need help with math problems because i have no idea what the problems are asking me to do

its says write an equivalent experession
4+m
9y
3a+5

how to i write the equivalent problem? use different numbers move them around?
give direction and answers

also how to write using an exponential notation?

n times n times 2 times n times n

and 5 times c times c times ctimes c

thanx in advance

2007-09-01 23:00:03 · 5 answers · asked by heart 2 in Mathematics

I would like to know if its just me or is it every one is time moving faster and if any one can tell me why ?

I mean I have a few Theory's but i want to know what you think

2007-09-01 22:53:21 · 10 answers · asked by Cypher 2 in Astronomy & Space

A helicopter is flying vertically above a fixed point....i mean its fixed & it does not move.....but earth is moving.....so after some time(say 5-6hrs),why is it still above that point only?????

2007-09-01 22:52:39 · 5 answers · asked by gamer2kool 1 in Physics

My grandkids have doubts about the validity about the Apollo missions, and having told them about the retroreflectors and proving it with a visit to a local planetarium. I got to thinking that if the reflector will reflect a laser beam, Will it relect sunlight? If so, how do you calculate the time of reflection?

2007-09-01 22:43:49 · 6 answers · asked by mountaindesertminer 3 in Astronomy & Space

i want cut or drill or melt granite stones without any sounds.that instruments must be carry bull in a bag

2007-09-01 22:42:04 · 6 answers · asked by naresh j 1 in Earth Sciences & Geology

how do you simplify these problems im really confused

12/21

54/9

a/3ac

plz tell me how to? and plz if you could include the answer as well

2007-09-01 22:26:05 · 11 answers · asked by heart 2 in Mathematics

2007-09-01 22:23:49 · 17 answers · asked by kec g 1 in Zoology

I just took 2 anadin ultra (liquid tabs) and i'm wondering how long its gonna take to work?

2007-09-01 22:16:08 · 12 answers · asked by Azure 1 in Medicine

2007-09-01 22:12:29 · 7 answers · asked by Lutfor 3 in Biology

Theres some kind of rock that moves across deserts supposedly by themselves? Whats the name of these rocks can anyone tell me?

Thanks!

2007-09-01 22:09:50 · 3 answers · asked by Zonnxy 2 in Earth Sciences & Geology

Thanks in advance for those who'll answer!

2007-09-01 22:00:06 · 1 answers · asked by anonymous 2 in Physics

The mythical chupacabra certainly looks like a dog here: http://macrocosm-magbook.blogspot.com/2007/09/remains-of-mythical-chupacabra-creature.html

2007-09-01 21:55:03 · 11 answers · asked by alvinwriter 2 in Zoology

2007-09-01 21:53:39 · 11 answers · asked by Anonymous in Physics

2007-09-01 21:53:07 · 14 answers · asked by Anonymous in Parapsychology

i want a ultrasonic driller for drill holes in hard granite stones with the depth of 4 to10 inches without any sounds.that driller must be carry bull in a bag.

2007-09-01 21:52:35 · 3 answers · asked by nani12340000 1 in Earth Sciences & Geology

what is the structural formula of diethyl ketone, methyl ethyl ketone, acetaldehyde, methyl phenyl ketone?

2007-09-01 21:41:54 · 3 answers · asked by honey_106 2 in Chemistry

Which happened first. Accepting big bang theory it would be easy to say that the cause of gravity is the primordial motion which began with the explosion, But it seems that motion can also be stated as the result of gravity. Please comment., keeping in mind whether it is possible to have gravity in the absence of motion, or whether it is possible for motion to exist without gravity being presesnt.

2007-09-01 21:40:17 · 9 answers · asked by polymath 1 3 in Astronomy & Space

2007-09-01 21:39:13 · 5 answers · asked by honey_106 2 in Chemistry

Show that the triangle is either isosceles or right angled triangle.

2007-09-01 21:38:06 · 3 answers · asked by Anonymous in Mathematics