Science & Mathematics - 3 November 2007

fire and gas system or automatic shutdown system

2007-11-03 13:48:54 · 4 answers · asked by geoff w 1 in Engineering

2007-11-03 13:46:15 · 13 answers · asked by jonathon f 1 in Zoology

I'm helping my brother with a Geometry project. The object of the project is to provide pictures along with each vocabulary term. There were 30 terms and now I'm down to needing just two more pictures! I need a picture ideas for: diameter and radius. They can't just be a drawing of the vocabulary term. The pictures have to be creative. I would really appreciate your help :)

2007-11-03 13:44:58 · 5 answers · asked by Anonymous in Mathematics

I know in a lot of cultures eating bugs is considered disgusting and strange. But are bugs really good for us? Should humans eat bugs?

2007-11-03 13:42:22 · 9 answers · asked by Anonymous in Biology

such that h(x) =(f of g)(x) when h(x) =3rd sq.root (7-x^2).

2007-11-03 13:41:18 · 2 answers · asked by student 2 in Mathematics

2007-11-03 13:38:07 · 8 answers · asked by Anonymous in Astronomy & Space

A 2480-Newton bobsled leaves a horizontal track with a speed of 26.9 m/s. It then moves onto a horizontal track lightly sprinkled with sawdust and comes to a stop in a distance of 147 meters. What is the coefficient of kinetic friction between the runners of the sled and the sawdust-covered surface?

2007-11-03 13:32:24 · 1 answers · asked by ags101 2 in Physics

I am measuring friction and was wondering how the weight of a block affect friction?

2007-11-03 13:28:16 · 4 answers · asked by The Motherload 2 in Physics

you know, those big window 3 speed fans. I assume nowhere near an AC. Would it even be more or less electricity used compared to keeping a lamp on?

2007-11-03 13:27:39 · 3 answers · asked by Anonymous in Engineering

N2O gas was generated from the thermal decomposition of ammonium nitrate and collected over water. The wet gas occupied 126mL at 21C when the atmospheric pressure was 758 torr. What volume would the same amount of dry N2O have occupied if collected at 758 torr and 21C? the vapor pressure of water is 18.65 torr and 21C.

this is what i setted up so far
P1= .99atm P2= .025 atm
T1= 294 K T2=294K
V1= .126 L V2=?

I know we have to set this up in this eqn
P1V1 / P2V2 = N1R1T1 / N2R2T2
since R is constant that is cancelled...but what about N?

2007-11-03 13:27:12 · 2 answers · asked by pnetecos 1 in Chemistry

i need a sci-fi ish music clip or music/song .

please suggest something. include song name and artist

2007-11-03 13:16:10 · 5 answers · asked by David S 6 in Astronomy & Space

Like whats the evidence?

Im not sure..
pleasee.

2007-11-03 13:15:48 · 2 answers · asked by Destiny 1 in Biology

Each rivet has a radius of 4.8 x 10^-3 m and is to be exposed to a shearing stress of no more than 5.1 x 10^8 Pa. What is the maximum tension T that can be applied to each beam, assuming that each rivet carries one-fourth of the total load?

2007-11-03 13:14:55 · 1 answers · asked by Anonymous in Physics

i need to know one for my forensics class

and know what he/she contributed to forensic science

any you know of???

2007-11-03 13:11:02 · 4 answers · asked by Anonymous in Other - Science

2007-11-03 13:10:49 · 6 answers · asked by merary e 1 in Mathematics

Who's excited about daylight savings time change tomorrow? Any special plans for that extra hour we gain?

2007-11-03 13:06:51 · 3 answers · asked by Anonymous in Other - Science

and do you have any idea where i can get a graph or list that shows the time of the sunset and sunrise last year or a few years ago?

2007-11-03 13:06:12 · 5 answers · asked by tatafranco2000 1 in Astronomy & Space

Can every animal have an orgasm or is it exclusively human?

2007-11-03 13:03:31 · 3 answers · asked by Anonymous in Zoology

I requesting some help to help me *understand* how to do this. Thanks.

2007-11-03 13:03:04 · 3 answers · asked by RogerDodger 1 in Chemistry

please??

2007-11-03 12:58:41 · 2 answers · asked by Destiny 1 in Biology

if a cell loses or ejcts its nucleus, what is its fate and why?

2007-11-03 12:57:24 · 3 answers · asked by Sarah 3 in Botany

A 2.8 kg block is between two horizontal springs. Neither spring is strained when the block is at the position labeled x = 0 m in the drawing. The left spring constant is k(left) = 470 and the right spring constant is k(right) = 660. The block is then displaced a distance of 0.057 m from the position where x = 0 m and is released from rest.

(a) What is the speed of the block when it passes back through the x = 0 m position?

(b) Determine the angular frequency of this system.

http://www.webassign.net/CJ/p10-22.gif

2007-11-03 12:54:06 · 1 answers · asked by Unkown 2 in Physics

2007-11-03 12:53:19 · 8 answers · asked by Keva T 1 in Agriculture

There's this show on WE TV called Rescue Mediums. I know John Edwards & Ghost Hunters and whatnot is staged, but this show I'm telling you DOES NOT SEEM STAGED TO ME. Their website is http://rescuemediums.com Has anyone seen this show? It's impossible for this show to be staged. I believe it's real. Opinions?

2007-11-03 12:49:30 · 2 answers · asked by Anonymous in Paranormal Phenomena

I think the sky is clear but im not quite sure if its blue. Because without water vapor reflection in the sky then the sky would be clear.

2007-11-03 12:48:08 · 7 answers · asked by rudybilliejo 2 in Weather

http://x-o-best-answer-princess-o-x.piczo.com/?preview=y&g=38384624&cr=5&rfm=y

2007-11-03 12:46:59 · 12 answers · asked by Anonymous in Mathematics

2007-11-03 12:34:17 · 2 answers · asked by Anonymous in Mathematics

2007-11-03 12:31:20 · 2 answers · asked by Anonymous in Biology

One of my daughter's friends told me this out of the blue yesterday, and I've been wondering. (The entire province of BC is devastated by the Pine Beetle.) My second question: who the f*ck planted pine and why is it better than cedar, fir and spruce? (the native species)

2007-11-03 12:27:36 · 4 answers · asked by Shinigami 7 in Botany

2007-11-03 12:27:10 · 13 answers · asked by Joanne C. L 2 in Earth Sciences & Geology