Science & Mathematics - 15 October 2007

from sunlight, pollution, radioactivity usage etc

anything which might risk something

will it happen?

2007-10-15 09:12:35 · 8 answers · asked by Anonymous in Biology

2007-10-15 09:11:48 · 1 answers · asked by Terri L 2 in Biology

2007-10-15 09:10:52 · 5 answers · asked by Mimi 2 in Biology

a) OF2


b) N3-


c) NO2-


d) IF5


e) C2H6O

2007-10-15 09:10:06 · 1 answers · asked by harrisiticcheese 1 in Chemistry

CH2=CH2 + Br2 → BrCH2CH2Br

2007-10-15 09:08:59 · 1 answers · asked by harrisiticcheese 1 in Chemistry

A.slightly less

B. much less

C. slightly greater

D. the same

2007-10-15 09:06:50 · 4 answers · asked by cuerpito_15 1 in Physics

my data:

Green = 33
Albino = 8
Total = 41

I need to find the expected for both.

2007-10-15 09:05:08 · 3 answers · asked by Anonymous in Mathematics

2007-10-15 09:04:42 · 4 answers · asked by Anonymous in Astronomy & Space

http://tinypic.com/view.php?pic=bdqy45&s=2
Which of the following statments correctly identify the above molecules that are equivalent to each other ?

A) a and b
B) a and c
C) a and d
D) b and c
E) c and d



You must enter all the letters of your choices

2007-10-15 09:04:40 · 2 answers · asked by physicsisgay 2 in Chemistry

Go to this link and skim through and then answer the question please :D

http://www.popsci.com/popsci/science/65510b4511b84010vgnvcm1000004eecbccdrcrd.html

So, what is one scientific claim you have encountered today?

One that I can remeber from the top of my head is "Prefer ON". Its like the "Head On" stick for headaches but for scars claiming to "fade any scar".

2007-10-15 09:02:03 · 1 answers · asked by Anonymous in Other - Science

2007-10-15 09:01:58 · 1 answers · asked by navya 1 in Physics

farmhand attaches a 25 Kg bale of hay to one end of a rope passing over a frictionals pulley connected to a beam in the hay barn.then another farmhand pulls down on the opposite end of the rope with force of 277N. ignoring the mass of the rope, find the magntuide and dirction, gravitional force is 245N.

2007-10-15 09:01:03 · 1 answers · asked by big daddy 2 in Physics

A ball is thrown straight up with an initial
speed of 70 m/s.
How high does it go? Assume the accelera-
tion of gravity is 10 m/s2 : Answer in units of
m.

How long is it in the air? Answer in units of
s.

2007-10-15 09:00:51 · 1 answers · asked by Sarah B 1 in Physics

I am currently working full-time but I am not really happy with what I am doing right now. I have a B.S. in Mechanical Engineering Technology and almost done with my M.S. in Management. Do you think it would be wise to go back to school for a B.S. in Environmental Studies or Environmental or Civil Engineering if I were really interested in the environment?

2007-10-15 09:00:47 · 1 answers · asked by aj_ophtha1med 1 in Engineering

At a local festival, the entire town showed up, a total of 500 people. The
event raised $3,000. Tickets were priced as follows:

$7.48 per ticket for men
$7.12 per ticket for women
$0.45 per ticket for children.

How many children were there?

2007-10-15 08:59:26 · 7 answers · asked by Anonymous in Mathematics

The tallest volcano in the solar system is the
31 km tall Martian volcano, Olympus Mons.
Assume: An astronaut drops a ball off the
rim of the crater and that the free fall acceler-
ation of the ball remains constant throughout
the ball's 31 km fall at a value of 2.9 m/s2.
(We assume that the crater is as deep as the
volcano is tall, which is not usually the case
in nature.)
a) Find the time for the ball to reach the
crater floor. Answer in units of s.


b) Find the magnitude of the velocity with
which the ball hits the crater floor. Answer in
units of m/s.

2007-10-15 08:57:51 · 1 answers · asked by Sarah B 1 in Physics

What are two reasons why membranes must separate the inside from the outside of a cell??? can't find it nowhere!!!

2007-10-15 08:54:04 · 3 answers · asked by sand_illusions 4 in Biology

2007-10-15 08:53:29 · 8 answers · asked by Anonymous in Weather

3- tiered bithday cake rests on a table. from bottom to top the cake tiers weigh 16, 9, 5 respectively
find the magnitude and direction of normal force acting on 2nd tier?

2007-10-15 08:52:48 · 1 answers · asked by big daddy 2 in Physics

Write the 14 sets of quantum numbers that describe the 14 electrons of Silicon. How would I do this?

2007-10-15 08:51:48 · 3 answers · asked by Anonymous in Chemistry

2007-10-15 08:51:28 · 1 answers · asked by Anonymous in Biology

You are the substitute teacher for a high school biology lab and you need 5.00 L of 0.20 M acetate buffer, pH 4.50. You discover that the buffer available in the lab is actually pH 5.0. Since you do not have time to make up fresh buffer, you will need to adjust the pH using acid. How many milliliters of 6.00 M HCl do you need to add to the 5.00 L of 0.20 M buffer to adjust the pH from 4.50 to 5.00?

Hint: determine (HA) and (A-) at pH 5.00 and then at pH 4.50 and then calculate how much HCl is needed to react with A- to create more HA and less A-.

2007-10-15 08:51:26 · 2 answers · asked by SJ 1 in Chemistry

What happened?

Only serious answers please.

2007-10-15 08:50:57 · 9 answers · asked by mikey 3 in Paranormal Phenomena

2007-10-15 08:50:57 · 5 answers · asked by The Oxford College of Life 2 in Zoology

Some scientist think they have seen in a photo from there satelite that it has seen another galaxy.

2007-10-15 08:50:34 · 36 answers · asked by Umka_J_N. III 1 in Astronomy & Space

2007-10-15 08:49:10 · 2 answers · asked by Anonymous in Physics

An object is released from rest on a planet
that has no atmosphere. The object falls
freely for 4.7 m in the first second.
What is the magnitude of the acceleration
due to gravity on the planet? Answer in units
of m/s2.

2007-10-15 08:48:58 · 1 answers · asked by Anonymous in Physics

of isolating mechanism will have contributed to this speciation process?
a. behavioral isolation
b. mechanical isolation
c. geographical isolation
d. temporal isolation

2007-10-15 08:47:07 · 3 answers · asked by ry ry 3 in Biology

I am an attorney at law, this not a homework assignment, it is more of a hobby. I heard/read some time ago that the universe was 40 light years across before the BB, but now I note that is more likely just really well compressed singularity. What is the current collective theory?

I am just interested.

2007-10-15 08:46:24 · 8 answers · asked by Songbyrd JPA ✡ 7 in Astronomy & Space

Supposedly 2012 the Mayan calender ends, so, so does the earth...any one believe this? Support your answer please, and if so, are you a Christian? I don't know much about this so thats why I am asking :)

2007-10-15 08:45:26 · 10 answers · asked by holiday♥ 4 in Earth Sciences & Geology