Science & Mathematics - 4 December 2006

im doing a research article on antibiotics and stuff for organic chem . . i chose an article in chemical and engineering news . . the date on the aritcle is april 12, 2004 and its called NEw approach to antibiotics i could really use the help as the paper is due tomorrow morning

2006-12-04 13:16:44 · 1 answers · asked by sailorc_ko2000 1 in Chemistry

2006-12-04 13:16:21 · 3 answers · asked by Lillian 1 in Mathematics

...3
...6
...5 and 10
...9

2006-12-04 13:16:01 · 6 answers · asked by a 4 in Mathematics

What restictions need to be applied?

2006-12-04 13:15:25 · 1 answers · asked by Frank L 2 in Engineering

2006-12-04 13:12:16 · 12 answers · asked by G-Man 3 in Astronomy & Space

2006-12-04 13:12:13 · 5 answers · asked by Michael B 2 in Astronomy & Space

x+1/2 =9
what dose x =

2006-12-04 13:10:57 · 9 answers · asked by Anonymous in Mathematics

Can any one show me how to find the exact value of Cos 30 + Sin 30, the question I have is actually a little tougher but I think from here I can get it...

2006-12-04 13:10:31 · 2 answers · asked by gg 4 in Mathematics

2006-12-04 13:10:17 · 30 answers · asked by blah 1 in Physics

A firefighter friend of mine has this question. If they had a tank 8'diam x 13' long with a 6" diam line from it down to the ground, what would the flow be when they open the valve? The bottom of the tank would be 11' off the ground, it is a gravity fed system. Assume two 90s for fittings, standard cs pipe (if required), I don't need it to the thousandth of a gpm :)

a) What is the flow (gpm) from the tank when full?
b) What is the flow (gpm) from the tank with 1" of level?
c) What is the time to empty the tank completely (starting from full)?

Thanks all.

2006-12-04 13:09:26 · 2 answers · asked by Mukluk 2 in Engineering

A 3.00kg toy falls from a height of 10.0 m. Just before hitting the ground, what will its kinetic energy be? (Disregard air resistance; g=9.81m/s^2.)

A. 98.0J C. 29.4 J
B. .98J D. 294 J

2006-12-04 13:09:23 · 1 answers · asked by strawberrylollipop12345 1 in Physics

Alzheimer's disease and Parkinson disease .....

they look similar to me cuz they share common symptom. For instance, one of the similar symptom is patients show difficulties in moving and walking.

Please point the main difference between them.

Please also show me if there is another similarity between them.
Thank you so much!!!

2006-12-04 13:07:18 · 7 answers · asked by Anonymous in Medicine

2006-12-04 13:07:17 · 1 answers · asked by sue m 2 in Mathematics

could someone help me out please, i'm sure this is childs play for most of you, but for some reason i cant get it :p thank you in advance :)

2006-12-04 13:07:07 · 13 answers · asked by daveyboii 2 in Mathematics

x+3=9/2
what dose x =

2006-12-04 13:07:03 · 4 answers · asked by Anonymous in Mathematics

2006-12-04 13:05:14 · 9 answers · asked by Anonymous in Zoology

Define f : R→R by f(x) = 3x^2 – 2x + 1. Show that f is continuous at 2.

2006-12-04 13:03:09 · 2 answers · asked by MMM 1 in Mathematics

2006-12-04 13:01:55 · 5 answers · asked by light 1 in Physics

For me its 40F with no windchill

2006-12-04 13:01:14 · 8 answers · asked by mark v 2 in Weather

For various polynomial regression models (2^,3^,4^,5^,6^,7^,8^,9^), I have corresponding values for the Durbin-Watson Test Statistic and P-values for each model. The Durbin-Watson values for each model are .589, .602, .663, .723, .767, .041, .035, .034. The corresponding P-values at 95% confidence are .6, .152, .002, .006, .003, .006, .0205, .0204.

With this in mind, which Model is the best?

2006-12-04 12:58:09 · 4 answers · asked by Anonymous in Mathematics

how do u convert this to slope intercept form step by step and whats the answer?

2006-12-04 12:55:21 · 7 answers · asked by Ellen 4 in Mathematics

How would you slove/setup this problem? Calcium is normally present in plasma at a concentration of about .1g/l. Calculate the mEq/L of Ca2+ in the plasma. The atomic weight of ca is 40

2006-12-04 12:54:52 · 1 answers · asked by qutiepy9 2 in Chemistry

A glass bottle of soda is sealed with a screw cap. The absolute pressure of the carbon dioxide inside the bottle is 1.65 x 10^5 Pa. Assuming that the top and bottom surfaces of the cap each have an area of 4.60 x 10^-4 m2, obtain the magnitude of the force that the screw thread exerts on the cap in order to keep it on the bottle. The air pressure outside the bottle is one atmosphere.

Okay, I know Pressure equals Force/Area. I believe is the 4.6e-4 and the Pressure is 1.65e5. I plug those in and solve for F but that is wrong. What am I doing wrong and not taking into consideration?

2006-12-04 12:54:30 · 2 answers · asked by Confused 1 in Physics

2006-12-04 12:54:22 · 4 answers · asked by sue m 2 in Mathematics

There is an answer!! its a math riddle:

Twice eight are ten of us, yet ten is just three.
Seven of us are five.
Can you now see?
If this is not enough, I will tell you a bit more,
Nineteen of us are eight, and nine is just four.

2006-12-04 12:53:47 · 7 answers · asked by abs of steel 3 in Mathematics

Lim (x^2-2x/x^2-sin x) = Lim (2x-2/2x-cosx) = Lim (2/2+sinx) = 1
x-> 0 x->0 x->0

2006-12-04 12:52:35 · 3 answers · asked by Anthropomorphic 2 in Mathematics

'Mono' means one 'di' means two and 'poly' means many. why are these terms used in describing the three types of sugars/?

A change in the type of fatty acid results in a different type of a
fat molecule. What molecule remains unchanged in all fats?

List two ways that a fatty acid molecule differs from glycerol.




Please ANSWER these QUESTIONS!!!!!!!!!!!!!!!!!T T

2006-12-04 12:52:34 · 1 answers · asked by eun l 1 in Chemistry

What is ;; x - 3y= -1 // 2x + 3y=16... you have to use substitution though.... what is the solution?

2006-12-04 12:52:21 · 2 answers · asked by Anonymous in Mathematics

Can someone help set up this problem:

How many formula units are in 5.1 g of TiO2?

2006-12-04 12:50:19 · 1 answers · asked by Mia16 3 in Chemistry

Please help me out and also put the formula if you know please..thank you

2006-12-04 12:47:54 · 4 answers · asked by Anonymous in Chemistry