Science & Mathematics - 6 October 2007

2007-10-06 05:09:38 · 15 answers · asked by Lee Lee 5 in Weather

i took the derivative of this equation and then subtracted teh value of f prime(7) - f prime(9). But i dont know if i am right.

2007-10-06 05:05:25 · 2 answers · asked by Amer 1 in Mathematics

2007-10-06 05:03:06 · 3 answers · asked by Elle 1 in Biology

I tried every single way but for some reason could not get the right answer. Here is what i did: i used product rule for the middle term and ended up getting an equation which looks right but is not. teh equation i got after solving is 4x^3+3e^x*sin(x)+e^6

2007-10-06 05:02:20 · 2 answers · asked by Amer 1 in Mathematics

Arrange a number from 1 to 19 and give a sum that when arranged along the boxes below gives that sum you supplied. Remember that you only add it diagonally in more than 2 boxes and horizontally (all horizontal).

.............
............
..........
........... 
.............

2007-10-06 05:00:45 · 1 answers · asked by RJJM14 1 in Mathematics

I am doing a newspaper project for biology and i need to find articles that have to do with biology. I really need to know some of the types! Please help.

2007-10-06 04:58:27 · 6 answers · asked by Anonymous in Biology

there are only 5000 stars in universe and they're fixed to solid firmament as mentioned in Genesis. scientists are devils pawns.

solar system is a lie and earth is flat immobile circle.

please take bible literally or you are a fool.

scientists should stop being so arrogant and respect it instead of spreading lies!!!

http://www.theflatearthsociety.org/

2007-10-06 04:49:34 · 15 answers · asked by Anonymous in Astronomy & Space

Two points A and B have position vectors a and b respectively. In terms of a and b find the position vector of
a point U on the straight line AB for which AU/U B = 1/3.

I'm not sure how to calculate the different proportions of a and b. I know if U was the mid point then it would simply be 0.5a+0.5b but I can't think how to alter this. I'm thinking maybe 0.25a+0.75b perhaps, but I'm not 100% sure why. Cheers.

2007-10-06 04:47:02 · 2 answers · asked by Anonymous in Mathematics

i have to give a reason for that and suggest the trough(if formed) is likley to be broadened.

2007-10-06 04:46:36 · 1 answers · asked by Anonymous in Chemistry

f(x)= (8x-2)/ (x^2-1x-30)
find the following
vertical asymptotes
horizontal asymptotes
and the x-intercepts

2007-10-06 04:43:48 · 2 answers · asked by star baller 360 5 in Mathematics

mmk so i have to know the normal temperature of hot water coming out of the faucet! like when you cant put your finger in the water cause its too hot. and also the really cold temp. of water coming out of the faucet. just the average, doesnt have to be real specific. k thx!

2007-10-06 04:39:49 · 2 answers · asked by flowerchild 4 in Physics

The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of v = 3.9 m/s, what is the largest value that the radius r can have if the car is to remain in contact with the circular track at all times?

I tried doing

PE = KE
mgh = 1/2mv^2
2gh = v^2
2g(2r) = v^2
4gr = v^2
4(9.8) r = (3.9)^2

r = 0.388

but it was wrong. anybody helP?

2007-10-06 04:31:52 · 3 answers · asked by Alan W 2 in Physics

evolutionists: If the canyon in texas that just opened formed so quickly (in 2002) how can you be sure everything else (like grand canyon, or the forest of spirit lake) took millions of years.

2007-10-06 04:29:42 · 5 answers · asked by james s 3 in Earth Sciences & Geology

If an airplane covered 13 miles of its route while decreasing its altitude by 42,000 feet. Find the slope of the airplane's line d to the nearest hundredth. [Hint: 1 mi = 5280 feet.]

can someone help me please?

2007-10-06 04:28:39 · 4 answers · asked by momscharm1964 1 in Mathematics

also which of the two compounds has a broadened trough(peak) at this wavenumber?

2007-10-06 04:26:46 · 4 answers · asked by Anonymous in Chemistry

What are we suppoesed to evolve to next?
A donkey? birds? horses?

2007-10-06 04:26:25 · 2 answers · asked by Anonymous in Earth Sciences & Geology

Wood?
is that data collected?
a varible
or hypothesis?

2007-10-06 04:22:40 · 2 answers · asked by Halisha S 1 in Physics

The ones that use a parking orbit or the ones that use direct injection
Which launch system is more reliable:Ariane 5 or Proton-M Briz-M? which could you choose and why?

2007-10-06 04:20:17 · 2 answers · asked by Omar 1 in Astronomy & Space

Is it possible to separate (a+b)! into terms strictly involving a! and b!?

(Obviously (a+b)! = a!b![(a+b)!/a!b!]. I'm looking for something like (a+b)! = a!b!*k, where k is also a function of strictly a! and b!)

2007-10-06 04:19:10 · 5 answers · asked by rcf1105 2 in Mathematics

2007-10-06 04:17:12 · 11 answers · asked by Anonymous in Medicine

(a)structual formula of the compound
(b)dissociation of ions in the compounds
(c) number and arrangement of electrons in the atoms of the elements
(d) model of the atom

2007-10-06 04:15:48 · 3 answers · asked by nana ♥ 2 in Chemistry

2007-10-06 04:15:44 · 6 answers · asked by minh t 1 in Chemistry

porportions

2007-10-06 04:15:10 · 4 answers · asked by Anonymous in Mathematics

We know that fire is the biproduct of the rapid decomposition of a substance, such as wood. We also know how to use it, classify it based on it's heat and color, and handle it. But, *what is it*? What does fire itself consist of? With sophisticated enough technology, could we theoretically capture fire particles, or condense them into a liquid or a solid? What are actual fire particles, or are there any particles? Even light consists of photons, and all energy is essentially matter on one level or another.

2007-10-06 04:12:33 · 4 answers · asked by Michael F 3 in Physics

I know this compound is insoluble, but what's its numerical solubility at 0 and 100 deegres Celcius? (or anywhere between these temperatures)

2007-10-06 04:12:18 · 3 answers · asked by Chris D 1 in Chemistry

There is too much money to be made by governments and leaders and agencies for there ever to be a cure for these ! Even if there were cures it would never be made public and would be guarded as top secret. Do people actually believe there will one day be cures for these??

2007-10-06 04:07:00 · 7 answers · asked by nikond40rob 1 in Medicine

what desisons do you make that would add less carbon dioxide to the environment that you currently add ?

2007-10-06 04:03:51 · 3 answers · asked by jevee 5 in Earth Sciences & Geology

2007-10-06 04:02:55 · 12 answers · asked by Anonymous in Mathematics

ethanol
propan-2-ol
propan1-ol
cyclohexanol
b)name the four compounds
please help me on this

2007-10-06 04:01:53 · 2 answers · asked by Anonymous in Chemistry

A cone is filled with ice-cream. It also has one scoop of ice cream on top in shape of a half sphere. The diameter of the sphere is 2 in and the height of the cone is 5 in. Calculate the volume of the ice-cream in cubic yards.

note: If you do know the answer can you please explain to me how you got it. Thank you.

2007-10-06 03:52:40 · 6 answers · asked by Anonymous in Mathematics