Science & Mathematics - 24 September 2006

2006-09-24 07:22:46 · 8 answers · asked by jame2226 1 in Mathematics

2006-09-24 07:22:32 · 14 answers · asked by Kristi J 1 in Biology

2006-09-24 07:21:11 · 10 answers · asked by jame2226 1 in Mathematics

what are some good technical science degrees.

2006-09-24 07:19:49 · 3 answers · asked by almostageniusbutsomuchtoknow 2 in Other - Science

is not replaced so what is the probability of two marbles in a row that r not purple

2006-09-24 07:19:43 · 5 answers · asked by loooooio l 1 in Mathematics

2006-09-24 07:19:22 · 4 answers · asked by jame2226 1 in Mathematics

33.
The length of a rectangle is 8 in. more than twice its width. If the perimeter of the rectangle is 64 in., find the width of the rectangle.

A) 10 in. B) 7 in. C) 8 in. D) 9 in.

2006-09-24 07:19:00 · 6 answers · asked by pjaxdriver13 1 in Mathematics

If there were no air resistance, how long would it take a free-falling parachutist to fall from a plane at 3200 meters to an altitude of 350 meters, where she will pull her ripcord? What would her speed be at 350 m? (in reality the air resistance will restrict her speed to perhaps 150 km/hr.)

2006-09-24 07:19:00 · 3 answers · asked by micheal j 1 in Physics

2006-09-24 07:17:21 · 7 answers · asked by jame2226 1 in Mathematics

Explain the concepts of human seetlement, land and food needs, increase in consumption, effects on social and civic facilities.

I have got to finish it in less than 1500 words. Please do tell me. Even if you give a site (except wikipedia, which i have checked) I would award 10 points only hat the site should be really nice.

2006-09-24 07:16:35 · 7 answers · asked by Saket108 2 in Geography

2006-09-24 07:16:33 · 7 answers · asked by Anonymous in Chemistry

2006-09-24 07:15:35 · 21 answers · asked by rdbul 1 in Other - Science

I know the moon has an affect on large bodies of water creating high tide low tide...and I was just curious if it would affect the human body since we are made up of so much water

2006-09-24 07:13:07 · 4 answers · asked by hello 2 in Earth Sciences & Geology

2006-09-24 07:12:24 · 2 answers · asked by Bre G 1 in Mathematics

29.
The product of two consecutive positive even integers is 360. Find the integers.

2006-09-24 07:10:02 · 4 answers · asked by pjaxdriver13 1 in Mathematics

HELP! I''m BLOCKED!! I need to know steps to do this:
This is a mcg/kg/min Q:
Order: Med "X" 450 mg IV per 500 mL NS at 4 mcg/mg/min? WT= 198 lbs.
What is the Rate in mL/min? & What do you give in mcg/min?

2006-09-24 07:09:59 · 1 answers · asked by Ca-C 3 in Medicine

The 2 vectors 3i-7j (no k) and 2i+3j-2k define a plane (its the plane of the triangle with both tails at one vertex and each head at one of the other vertices).
Which of the following vectors is perpendicular to the plane?
a 4i+6j+13k
b -4i+6j+13k
c 4i-6j+13k
d 4i+6j-13k
e 4i+6j

I did the cross product and got
=i(AyBk-AkBy)+j(AkBx-AxBk)+k(AxBy-AyBx)
=14i+6j+23k

How do I go from here?

2006-09-24 07:09:38 · 2 answers · asked by dutchess 2 in Mathematics

I'm really having a difficult time learning Managerial Accounting. Is there an easier way to learn or could somebody help me? I basically need to know EVERYTHING! HEEELLLLLPPP!!!

2006-09-24 07:05:53 · 2 answers · asked by sweetieface19 2 in Mathematics

The equation for calculating the relativistic mass of a moving object is...

m = m0/ square root(1-(v^2/c^2))

where m is the relativistic mass of the object, m0 is the rest mass of the object, v is the velocity of the object, and c is the velocity of light.

Calculate the relativistic mass to rest mass ratio, m/m0, for an electron that has a velocity with respect to the observer that is 80.0% of the velocity of light.

2006-09-24 07:00:57 · 4 answers · asked by dreamz 4 in Physics

2006-09-24 07:00:11 · 1 answers · asked by loooooio l 1 in Mathematics

Q: 2a + 5b

a = 4i + 3j
b = 2i - j

A: From what I read since I'm a bit rusty:

(a+b) = (a1+b1)i + (a2+b2)j + (a3 + b3)k

for:
(2a + 5b) = (2xa1+5xb1)i + (2ax2+5xb2)j + (2xa3 + 5xb3)k

is this method correct?

2006-09-24 06:58:39 · 3 answers · asked by Anonymous in Mathematics

2006-09-24 06:58:35 · 4 answers · asked by miss Ann 1 in Biology

2006-09-24 06:57:03 · 11 answers · asked by hypnogirl 3 in Zoology

Ok, here's the problem...

"Calculate the height from which a block of ice at 0degrees celsius must be dropped for it to completely melt upon impact. Assume that there is no air resistance and that all the energy goes into melting the ice (Hint: equate the joules of gravitational potential energy to the product of the mass of ice and its heat of fusion (335,000 J/kg)).

My problem is that I have no clue what formulas/equations to use for this. I realize that the equation for Potential Energy is PE = mgh. And the equation for Quantity of heat is Q = cmDT. But how would I apply them to this problem?

2006-09-24 06:55:31 · 3 answers · asked by Anonymous in Physics

There is a room in space floating out in no where. Inside this closed room is a tennis ball. The tennis ball is bouncing around the room at about 25 km/h. The room is 10 foot by 5 foot by 8 foot. Suddenly the universe is split into 1000 different universes. Each universe is exactly the same at the first moment. Now as soon as the universes start off on their own things start changing because of quantum uncertainty. The question is, to the human eye, how long would it take to notice differences in the velocity and position of the tennis balls. Will the difference be noticed in the first year? A thousand years? A million? Never? Immediatley?

And how long would it take to notice differences in a person who was in the same situation as the tennis ball? (IE: The brain)

I'm not expecting anyone to get this down very precise but I'd enjoy opinions/estimates. Thank you!

2006-09-24 06:55:07 · 4 answers · asked by Someone 2 in Physics

how do you calculate volume from mass and density and density from volume and mass?

2006-09-24 06:54:45 · 7 answers · asked by George B 2 in Mathematics

2006-09-24 06:54:04 · 3 answers · asked by toni41sanders 1 in Mathematics

2006-09-24 06:50:22 · 7 answers · asked by Anonymous in Other - Science

Is this in an algebraic form? I got this wrong on a test, and somehow I came up with -16.08 . Problem is, this test was 4 weeks ago, and I did not show my work. What did I do wrong?

2006-09-24 06:50:22 · 4 answers · asked by Anonymous in Mathematics

probibility of two blues marbles in a row this is based on my first question

2006-09-24 06:43:30 · 2 answers · asked by Anonymous in Mathematics