Science & Mathematics - 20 September 2007

its height in feet t seconds later is given by y = 44t - 16t2.

Find the average velocity for the time period beginning when t = 2 and lasting 0.5 second.

Find the average velocity for the time period beginning when t = 2 and lasting 0.1 second.


Estimate the instantaneous velocity when t = 2.

2007-09-20 04:44:40 · 4 answers · asked by Anonymous in Mathematics

Is the person who made the inspection sheet an idiot?

2007-09-20 04:40:18 · 1 answers · asked by Anonymous in Physics

2007-09-20 04:39:36 · 12 answers · asked by robin s 1 in Mathematics

What is difference between them?

2007-09-20 04:38:19 · 1 answers · asked by karan s 1 in Engineering

ex:

an unknown solution that buffers against acids contains a OH group
an unknown solution that buffers against bases contains a H group


what does a solution that DOES NOT buffer against either acid or base contain?

2007-09-20 04:34:49 · 2 answers · asked by Anonymous in Chemistry

...yesterday, and it was a beauty. It was about a foot-and-a-half long, shiny black, and had a single, bright red stripe running down the middle of its back. At first glance I thought it might have been a garter, but it seemed to be darker and had the red stripe instead of the two yellow ones. What kind of snake was this?

2007-09-20 04:32:20 · 2 answers · asked by Buffalo1 4 in Zoology

If the net force on a system is zero, is the net torque also zero?If the net torque on a system is zero, is the net force zero?

2007-09-20 04:29:41 · 4 answers · asked by hanani 1 in Physics

I need help finding out what these are made out of.

Covalents Bonds
Protons
Neutrons
Electrons

2007-09-20 04:27:46 · 3 answers · asked by steffi32086 2 in Chemistry

while doing qualitative inorganic salt analysis, why does sodium carbonate extract need to be acidified with an acid besides the acid radical?

2007-09-20 04:22:13 · 1 answers · asked by Tower Of Babel 2 in Chemistry

Name two Organic salts formed with help of Carbon Monoxide?
Name two organic acids formed by carbon Monoxide?
I suppose one of the organic acids is "Carboxylic acid"

2007-09-20 04:21:30 · 1 answers · asked by Anonymous in Chemistry

Consider a small block sitting atop a much more massive block. There is some friction between the two blocks (call it μ sub 0). However, the bottom block sits on a frictionless surface. Initially the two blocks are at rest. Someone then gives the top block a push until it begins moving at a speed. At this point no further external forces are applied.

We observe that the small block begins to slow down and the large block begins to speed up. Explain why this happens (what forces are responsible), and write down expressions for velocity versus time for the 2 blocks. Compare both forces and accelerations on the 2 blocks. Then find the time it takes before the 2 blocks reach the same speed relative to the ground.

2007-09-20 04:21:13 · 1 answers · asked by Yea Op 1 in Physics

How do I put a matrix in tabular form?

2007-09-20 04:20:53 · 1 answers · asked by Rutgers101 2 in Engineering

just need to know if the moon comes out every night or does it miss the odd night cheers????

2007-09-20 04:17:53 · 8 answers · asked by DEBBIE D 3 in Astronomy & Space

Three allotropes of phosphorus are observed. One has a molecular weight of 31. How many atoms of phosphorus are in the molecule? (It should be a whole number.)


THNKUUUU FOR UR HELP!!!

2007-09-20 04:17:32 · 1 answers · asked by Anonymous in Chemistry

21.00 mL of 0.2000 M AgNO3 is mixed with 50.00 mL of 0.2000 M NaCl. Determine the identity with a chemical formula and the mass in grams of the precipitate that forms

2007-09-20 04:12:01 · 1 answers · asked by Anonymous in Chemistry

I have to factorise the following:
X3-4X2-X+4
(Xcubed-4Xsquared-X+4
Could Someone please explain what steps I need to do to factorise the expression, and other similar ones and don't know the method.

2007-09-20 04:10:41 · 10 answers · asked by irashymisfit 3 in Mathematics

2007-09-20 04:03:37 · 9 answers · asked by Andromeda 3 in Astronomy & Space

I got 3x / 5x. Is this right?

2007-09-20 04:00:49 · 8 answers · asked by Anonymous in Mathematics

2007-09-20 04:00:43 · 5 answers · asked by Anonymous in Biology

Particularly in southeastern Virginia (Hampton Roads area). What is a good pesticide to use for my home (in and around my house)?

2007-09-20 03:56:02 · 3 answers · asked by AF 1 in Zoology

i'd do it myself, but i CANT.
in a triangle, the angle A = 71 degrees 48 minutes
|bc| = 18 cm
and |ac| = 12 cm
find i) (angle of) abc
ii) |ab| correct to the nearest cm

how do i do this??

2007-09-20 03:53:05 · 2 answers · asked by plasticbag 2 in Mathematics

How far down is it inside the earth?

2007-09-20 03:51:48 · 2 answers · asked by Balrog 2 in Earth Sciences & Geology

I am assigned to find a type of invertebrate on which I can conduct experiments and examine one or more of their innate behaviours.
_______________

NOTE: Innate behaviour refers to the actions of an animal or human that aren't quite described in genes, but are expressed without prior experience through watching another individual. They are the responses to a stimulus that are quickly figured out through an attempt. (definition from Wikipedia)

2007-09-20 03:51:07 · 4 answers · asked by Anonymous in Biology

2007-09-20 03:47:39 · 4 answers · asked by ? 3 in Biology

What is the atomic wave of oxygen? I found atomic weight but not atomic wave.

2007-09-20 03:46:43 · 8 answers · asked by eagle 1 in Physics

just curious

2007-09-20 03:46:31 · 9 answers · asked by Randall 3 in Weather

what are the proofs of the particles nature of light?

2007-09-20 03:45:38 · 5 answers · asked by jessamen o 1 in Physics

Lansing, MI USA i just got out of college and i noticed two of the parking ramp attendants pointing to this light in the sky. It blinked three times then moved incredibly fast to the northeast blinked once more and was gone. I have never seen anything like that in my entire life. I jokingly said to the parking attendant looked like a UFO and he said yeah i couldnt identify it, but i was sure it couldnt of been a plane. Has anyone had a UFO encounter in your area and describe what happened?

2007-09-20 03:42:32 · 6 answers · asked by Balrog 2 in Astronomy & Space

10 points to the most creative question to go with these 3 pictures.

http://s223.photobucket.com/albums/dd78/floodtl/?action=view¤t=Takeoff.jpg

2007-09-20 03:38:48 · 1 answers · asked by Anonymous in Physics

I need it this sunday. I gotta pass it, so please, someone help me!!

2007-09-20 03:37:07 · 3 answers · asked by Shawn Lyn Camaongay 1 in Biology