Science & Mathematics - 17 September 2007

Can they use your blood if you smoke medicinal herbs?

2007-09-17 14:04:07 · 4 answers · asked by malachitemom 3 in Medicine

The source I heard this from, his reasoning is that there is no oxygen underwater, so the boots (or any other articles left over from the wreck), can't oxidize and ruin. This is also why dumping waste into the sea won't work, because it won't decompose. How true is this?

2007-09-17 14:02:26 · 2 answers · asked by Anonymous in Other - Science

six cows can do 1 job in 9 days. how many cows would it take to do 3 jobs in 5 days?

2007-09-17 14:01:46 · 6 answers · asked by judykharrison 1 in Mathematics

A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 24 m/s at an angle of 52° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. What is the vertical height between the two climbers?
m

2007-09-17 14:01:10 · 2 answers · asked by Marianna E 1 in Physics

2007-09-17 14:01:09 · 2 answers · asked by Karissa C 1 in Mathematics

five years ago, orville was twice as old as wilbur. five years from now, orville will be 1 1/2 times as old as wilbur. how old are both now?

2007-09-17 13:56:52 · 5 answers · asked by judykharrison 1 in Mathematics

Many tire manufacturers guarantee their tires for 50,000 miles. If a tires has a 16 in radius, how many revolutions of the tires are guaranteed? There are 63,360 inches in a mile. Round to the nearest revolution.

2007-09-17 13:56:19 · 10 answers · asked by Anonymous in Mathematics

So, if anyone has ever done that experience.
Please explain those steps.

1-What does blending the onion do?
2-What does soap and NaCl (table salt) does?
3-Why do we have to heat the onion at 65 C for 15 minutes?
4-Why put the mixture on ice for 5 minutes right after?
5-Why filter the mixture? (Sounds stupid but...)
6-Why does putting ethanol in the mixture separate the DNA of the onion from it's source?

Thank you.
I know, I didn't get any of my experimentation but the teacher said we had to search the web to understand it.
That's what I'm doing.
Thank you.

2007-09-17 13:55:14 · 4 answers · asked by Anonymous in Biology

2007-09-17 13:52:48 · 5 answers · asked by To-the-Stars 4 in Physics

I'm curious because I want to be an astronomer and don't know were in the country (the USA) I would live. Anywhere but the southeast would be helpful.

2007-09-17 13:51:06 · 12 answers · asked by mjvast1014 3 in Astronomy & Space

its for my homework

2007-09-17 13:50:32 · 4 answers · asked by jsweetz 1 in Weather

answer in scientific notation.

2007-09-17 13:49:19 · 12 answers · asked by James H 1 in Mathematics

The gym is 21 years newer than the auditorium. The gym is also one fourth as old as the auditorium. How old is each building?

This is my equation:
x = auditorium
x-21 = gym
1/4x = gym

Therefor..

x - 21 = 1/4x

When I try to solve it, I just can't seem to figure it out. Is this the right equation? Please solve it and explain for me please.

2007-09-17 13:49:03 · 13 answers · asked by Kim 2 in Mathematics

By this i mean should Canada start building there own space vehicles and take a fully active part in outer space exploration?

2007-09-17 13:47:42 · 5 answers · asked by Anonymous in Astronomy & Space

I'm pretty sure it is, but how does it produce waste? HOw does it reproduce and repair itself? What other characteristics of a living thing does it have? Basically anything you can tell me would be appreciated.

2007-09-17 13:47:40 · 4 answers · asked by Miss Klezmer 4 in Biology

Can someone please give me a summary comparing and contrasting the variety of amino acids with that of monosaccharides and fatty acids? Which group exhibits the greatest structural variability and why/how?

2007-09-17 13:46:42 · 1 answers · asked by Anonymous in Chemistry

remind me of old architecture like the parthenon and the colloseum
in europe

2007-09-17 13:45:19 · 7 answers · asked by Anonymous in Astronomy & Space

In the following sequence, what could be the next term?

1,4,27,256...........

2007-09-17 13:45:06 · 5 answers · asked by John 2 in Mathematics

When chasing a hare along a flat stretch of ground, a greyhound leaps into the air at a speed of 12.7 m/s, at an angle of 25° above the horizontal.
(a) What is the range of his leap?
____ m
(b) For how much time is he in the air?
____s

2007-09-17 13:43:37 · 1 answers · asked by Santina E 1 in Physics

This problem is so twisted. I tried like three times but could not get it:
The length of a rectangle is twice its width "w". A second rectangle, which is 8 cm longer and 3 cm marrower than the first rectangle, has perimeter 154 cm. Find the dimensions of each triangle.
Explain to me please? And do not call me stupid!

2007-09-17 13:43:17 · 5 answers · asked by |♥*/♥\*♥| 3 in Mathematics

2007-09-17 13:40:02 · 4 answers · asked by diiA b. 1 in Physics

Calculations for % composition of alloy. That is the question. I have a table of lab results and stuff just need to know the furmula in order to find it out. THANKS!

2007-09-17 13:39:51 · 3 answers · asked by maggie c 1 in Chemistry

I need a bolt that can stick out the other side of the surface it is threaded into. The exposed portion of the bolt should be smooth, so as to be used as a bearing surface for a transverse load.

2007-09-17 13:39:41 · 4 answers · asked by Jdude 2 in Engineering

I have the answers to the problems but I need to know how to work it out if anyone can help that would be great! Thanks.

Consider the polynomial (x-a) (x-b) and the real number line

a) identify the points on the line at which the polynomial is zero. (see figure)
b) In each of the three subintervals of the line, write the sign of each factor and the sign of the product.
c) for which x-values does the polynomial change signs?

figure:
---o-----------------------o----->
a b

o stands for a closed circle btw

2007-09-17 13:39:29 · 2 answers · asked by billf39 2 in Mathematics

Need help understanding pressure/pressureless steam cooking very confusing.....what's convection....I know it's alot....thanks

2007-09-17 13:39:00 · 2 answers · asked by Moza 3 in Engineering

2007-09-17 13:38:38 · 1 answers · asked by Anonymous in Chemistry

2007-09-17 13:38:18 · 2 answers · asked by Sato 1 in Weather

I'm at work and there is a noisy whore that sits next to me,but I'll write as much,well last night me & tony were in our room I was laying down and tony was in the bathroom brushing his teeth,I put the baby monitor in my room,so I can here the boys in there room,and andrew was already asleep & anthony was just laying down talking,playing w/ his toes and fingers.
I had the monitor on and it was low and I heard some noise coming from the monitor,so I put it on my ear so I can hear it clearly,I figured oh its anthony making noise,and when I did that I heard a man talking,but it wasnt clear it sounded kind of electronic,w/ a little raspy to me,he said a couple of words but I heard anthony just talking,and the fan blowing,and the man's voice,tony heard it to when I put the volume up a little,girl I was scared me and tony got the kids and made them sleep in our room.I prayed,yeh,but I'm scared,Im home by my self at night..............can baby monitors pick up other noises from other houses?

2007-09-17 13:37:52 · 5 answers · asked by Anonymous in Paranormal Phenomena

i have AC flothing through the house right? what if i want soler panels? what do i need to get install and what do i need to do, to do that?

2007-09-17 13:37:00 · 2 answers · asked by DANIELL 1 in Engineering

2007-09-17 13:36:47 · 9 answers · asked by Anonymous in Biology