Science & Mathematics - 17 November 2007

a. giving narrow spectrum drug
b. culturing the pathogen and identifying it
c. performing the disk diffusion essay
d. using a broad spectrum so that the chance of killing the pathogen is greater

2007-11-17 05:38:21 · 2 answers · asked by Anonymous in Biology

2007-11-17 05:37:41 · 4 answers · asked by Sweetness 1 in Physics

Does anyone else feel this transit already impacting them in one way or another ? Personally it falls in my 7th house of relationships ( sun sign wise ), thus this is going to be one long bummer in this area and it will go direct only after the end of January.
Any feedback is much appreciated.
Where does Mars in Cancer fall in your chart?

2007-11-17 05:37:35 · 4 answers · asked by robin 2 in Astronomy & Space

2007-11-17 05:36:40 · 1 answers · asked by Sweetness 1 in Physics

I was watching "I am my own twin" on the Discovery channel and it documented people that carry their twins DNA.

In short: because they carried two seperate DNA's (one from the fused twin) their children's DNA didnt match and it looked as though the children didnt belong to the mother.


In the case of paternity, can the same thing occur? Can a woman take a man for paternity and the test come back negative? Even though he may very well be the father because he carries two sets of DNA?

2007-11-17 05:30:08 · 3 answers · asked by ♣DreamDancer♣ 5 in Biology

Assume that we know sigma (1/r!)from r=0 to infinity converges to e. Then how would we show that e - sigma(1/r!)from r=0 to n < 1/(n(n!))?

From this, can we deduce that e is irrational?

2007-11-17 05:29:48 · 2 answers · asked by Anonymous in Mathematics

2007-11-17 05:28:58 · 34 answers · asked by Hue Heff 1 in Mathematics

Solve for x if the area of the following rectangle is 20 and the perimeter is 18.


I dont get it...

2007-11-17 05:28:10 · 8 answers · asked by kykygoo 3 in Mathematics

I saw a show about a zoo im maine, and that got me thinking, "how can a kangaroo, and other warm climate animals live there?"

2007-11-17 05:26:40 · 3 answers · asked by Brian M 1 in Zoology

2007-11-17 05:22:31 · 21 answers · asked by Anonymous in Astronomy & Space

I've always been interested in astonomy and would like to purchase a telescope to view various constellations, heavenly bodies, and planets. I don't want to spend a lot of money because it would just be a hobby. What kind of telescope should I get? Like I said, I would like something powerful enough to see planets (not necessarily really detailed, just enough that it's recognizable). I'm clueless in this area and need as much advice as possible. Thanks!!! Oh... price estimates for your suggestions would be nice as well.

2007-11-17 05:07:11 · 7 answers · asked by Lindz 2 in Astronomy & Space

Give examples of the non-rectangular please :)

2007-11-17 05:02:29 · 3 answers · asked by Anonymous in Mathematics

2007-11-17 04:58:13 · 3 answers · asked by Sweetness 1 in Chemistry

I have taken Phys Ed class, and we've learned about saving somebody who is injured, unconscious, etc. In life, I want to save another's life by performing cpr.

2007-11-17 04:57:16 · 5 answers · asked by Anonymous in Medicine

i am confused can someone help me

2007-11-17 04:55:30 · 13 answers · asked by arod9802 2 in Mathematics

The Earth rotates around the sun due to d curvature of spacetime. Why does not it fall into it(followig a spiral path?)
Most wud say, because of the tangential force that keeps the earth in its orbit... But how did this force originate when d spacetime was already curved because of the sun??
Also since 'spacetime' is curved, time chould also be curved around the sun...
How can this be explained???
Any reference to the Cassini Spacecraft slingshot???

2007-11-17 04:50:52 · 5 answers · asked by Ash 2 in Astronomy & Space

can you give me an intensive description of ketones, uses in industry and simple experiments that can be conducted with them?? i need a lot of information and i have already checked several search engines but i need more info...

2007-11-17 04:45:09 · 2 answers · asked by curiousperson 2 in Chemistry

2007-11-17 04:43:45 · 2 answers · asked by Selim K 1 in Physics

A space shuttle has a mass of 2.5 x 10^6 kg. At lift-off the engines generate an upward force of 30 x 10^6 N. What's the weight of the shuttle in newtons? What's the acceleration of the shuttle when launched in m/s^2? The average acceleration of the shuttle during its 10 minute launch is 14 m/s2. What velocity does it attain in km/s?

2007-11-17 04:43:26 · 2 answers · asked by Anonymous in Physics

Equipment to be used in airplanes or spacecraft is often subjected to a shake test to be sure it can withstand the vibrations that may be encountered during flight. A radio receiver of mass 5.25 kg is set on a platform that vibrates in SHM at 116 Hz and with a maximum acceleration of 93 m/s2 (= 9.5 g).
(a) Find the radio's maximum displacement.
m
(b) Find the radio's maximum speed.
m/s
(c) Find the maximum net force exerted on it.
488.25 N

I found answer c but i do not know how to find a or b and have been trying to solve it for hours now.

2007-11-17 04:38:50 · 1 answers · asked by Anonymous in Physics

NOTE: They have equal kinetic energies!!!

2007-11-17 04:38:47 · 3 answers · asked by Selim K 1 in Physics

A photon of ultraviolet (UV) light possesses enough energy to mutate a strand of human DNA. What is the energy of a single UV photon having a wavelength of 39 nm?
5.1e-18 J

that was the first question...but then it asks:
What is the energy of a mole of UV photons having a wavelength of 39 nm?
-the answer is in Joules


please explain it!

2007-11-17 04:38:43 · 1 answers · asked by s.weiss 1 in Chemistry

If you never heard of Newman, please do a search of him.
Over 40 scientist has signed affidavits stating the possibility of this new technology. Do you believe the reason this new technology has not come about because of national security concerns?
This is my reply to dansinge from the last time I posed this question: The problem with many academia physics is they haven't had an original thought in their life. So please don't mimic the First Law of thermodynamics to me. In addition, it would nice if so-called physicist on this site explain how forty scientist supposedly got dupe by Joseph Newman. Please don't give lame explanations for t

2007-11-17 04:31:41 · 1 answers · asked by Anonymous in Physics

For example:
what is the difference between 2O and O2?
And how would you write something like in a word equation?

2007-11-17 04:30:29 · 1 answers · asked by ..... 1 in Chemistry

2007-11-17 04:24:46 · 13 answers · asked by diva 1 in Mathematics

Calculate the number of moles of nitrogen collected.
n= PV/RT
P= Patm -Ph2o - (23.5/13.6)
V=28.5 ml .0285L
R= .082
T = 22c 295.15K

I keep getting a negative number for P is this right.


formula given for P
(760 mmHg/ 1) x (1 atm/ 760 mmHg) - (Ph2o in torr/ 1) x (1 atm/ 760 mmHg) - ( height of bubble 23.5 cm h2o/ 1) x (760mmHg/ 13.6 cm h2o) x (1atm/ 760mmHg) =
Report It

2007-11-17 04:24:00 · 1 answers · asked by Anonymous in Chemistry

does anyone know the balanced chemical equation for the combustion of 1-pentanol please?!

2007-11-17 04:21:46 · 1 answers · asked by cksb 1 in Chemistry

Consider:

Georges Cuvier
Charles Lyell
Louis Aggassiz
Colin Patterson
Pierre Grasse
RH Brady
Douglas Dewar
David Raup
Michael Denton

et al.

2007-11-17 04:21:27 · 5 answers · asked by Jack 5 in Biology

2007-11-17 04:21:18 · 3 answers · asked by Davie J 1 in Chemistry

I would like to make a permanent magnet (Neodymium). So anyone there can give me informations on how to make it? This is because I don't know at all how magnets are made besides electromagnet. I've done electromagnet before, but now want to try something different. Thanks.

2007-11-17 04:18:03 · 3 answers · asked by Anonymous in Engineering