Science & Mathematics - 2 January 2007

I don't get why you can't use Koch's postulates if the suspected pathogen causes a disease only in humans.... is it that it needs to be tested in multiple organisms.?? idk confused help please

2007-01-02 11:35:26 · 3 answers · asked by Joe S 1 in Biology

2007-01-02 11:35:06 · 8 answers · asked by PORCHA B 1 in Mathematics

2007-01-02 11:33:36 · 6 answers · asked by Anonymous in Biology

1) A(w) = 20w - 1.285 w^2

2) A(w) = 20w - 1.57w^2

3) A(w) = 20w - 1.5 w^2

4) A(w) = 20w - 2w^2

2007-01-02 11:33:12 · 4 answers · asked by Anonymous in Mathematics

1)When u climb a mountain your eardrums “pop” out ward as the air pressure decreases. When you come down they pop inward as the pressure increases. At the sea cost there is cave that can be entered only by swimming through a completely submerged passage and emerging into a pocket of air within the cave. The cave is not vented to external atmosphere. As the tides comes in the water level in the cave rises and your eardrums pop. Is the popping analogous to wht happen as you climb up or down a mountain? Give ur reasoning..

2)The kinetic theory assumes that a gas molecular rebounds with the same speed after colliding with the wall of container. Suppose the speed after the collision is less thn that before the collision would the pressure of the gas be greater thn equal to or less thn that predicated by kinetic theory? Give reason.

3)a)which if either contain a greater number of molecular a mole of hydrogen or mle of oxygen? B) which one has more mass? Give ur reason?

2007-01-02 11:32:54 · 1 answers · asked by Kshitil 1 in Physics

At what distance does the force of gravity between the moon and earth negate each other and equal zero. give answer in percentage or fraction ie 60% of earth & 40% of moon or 50%of moon 50 %of earth

2007-01-02 11:31:29 · 2 answers · asked by Anonymous in Physics

2007-01-02 11:30:51 · 14 answers · asked by hartwellm 1 in Mathematics

I need help setting up these problems

1. a container with a volume of 893 L contains how many moles of air at STP?

2. A chemical reaction produces 0.37 mol of N2 gas. What volume will that gas occupy at STP?

Thanks for the help!!!

2007-01-02 11:30:31 · 3 answers · asked by Mia16 3 in Chemistry

2007-01-02 11:30:19 · 3 answers · asked by suril 1 in Mathematics

2007-01-02 11:29:18 · 1 answers · asked by 1234 1 in Biology

2007-01-02 11:29:01 · 3 answers · asked by Paul P 1 in Physics

show me how to do this because i dont know how thanks

2007-01-02 11:28:47 · 6 answers · asked by Philip P 3 in Mathematics

2007-01-02 11:28:15 · 3 answers · asked by lindi 2 in Physics

2007-01-02 11:27:11 · 3 answers · asked by lindi 2 in Physics

2007-01-02 11:26:46 · 3 answers · asked by Codo 1 in Earth Sciences & Geology

before you answer please understand i am not going to boot leg, but trying to speed up the process of purifing store bought ethonol (which is deffinity unsuitable for drinking).

Is the sugar found in wine making/ fermentaion and common house hold sugar the same? they are both considered simple sugars but im still not sure.

also is there a difference in the yeast organism, or do all yeasts convert sugar into CO2 and ethonol?

2007-01-02 11:26:10 · 1 answers · asked by Flaming Pope 4 in Chemistry

If you want to cause a nuclear explosion:

It takes protons (or electrons, please answer) and shoots them at an atom. The atom then, once it is split, it releases a great amount of atomic thermal radiation.

If you want to fuse:

I you want to mix atoms such as atom 114 then you would shoot out calcium and mix it with the element Plutonium and they fuse together with all the friction/radiation.

2007-01-02 11:25:10 · 5 answers · asked by Anonymous in Physics

This organism is able to carry out both photosynthesis and cellular respiration. Choose one of these processes and write the name of the process you chose. Also state one reason why the process you chose is essential for the survival of the Euglena.

2007-01-02 11:23:51 · 3 answers · asked by Chrisy 1 in Zoology

help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

2007-01-02 11:23:06 · 12 answers · asked by Michael 2 in Astronomy & Space

2007-01-02 11:21:33 · 29 answers · asked by Karina 1 in Mathematics

Would you justify going with a 16 parallel GPS if the 12 parallel one seems better in other ways, like software, electronic compass, etc?

2007-01-02 11:21:18 · 1 answers · asked by STFU Dude 6 in Physics

List 3 systems, other than the skeletal system, the animal had when alive that helped it to survive. Describe how each of these 3 systems contributed to maintaining homeostasis.

2007-01-02 11:18:45 · 11 answers · asked by Chrisy 1 in Zoology

California/Nevada in the past week alone. Now granted most of these were level 1 and 2, with an occasional 3 tossed in for good measure. My question is...were they all really EQs? how sensative are the monitors--would they give a false read for say, a building demolition? Please don't flame me. I went to the local science museum last week and they had a really interesting display-- enough to catch my interest and do some web surfing...
http://earthquake.usgs.gov/eqcenter/recenteqsus/Maps/US10/32.42.-125.-115.php

2007-01-02 11:18:05 · 4 answers · asked by wholenote4 4 in Earth Sciences & Geology

There is paranormal activity in my home. something breathing, tapping, bad odors, and even physical contact. And at one time, mocking a voice of a person of this household currently living here.

2007-01-02 11:18:00 · 13 answers · asked by Rally 1 in Paranormal Phenomena

Conclusion: Throughout the fetal pig lab, my group was able to identify important external structures of the fetal pig, major structures associated with a fetal pig's digestive, respiratory, circulatory, urogenital, and nervous system. After we finished identifying the organs one by one, we compared the functions of certain organs in a fetal mammal with those of human organs throughout answering questions.

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this is a part of my fetal pig lab conclusion.
what else should i put more?

2007-01-02 11:17:58 · 9 answers · asked by heyheyhey 2 in Biology

2007-01-02 11:17:43 · 9 answers · asked by Kymberlee M 1 in Mathematics

2007-01-02 11:16:18 · 3 answers · asked by Anonymous in Biology

2007-01-02 11:16:13 · 3 answers · asked by Anonymous in Geography

White
Yellow
Blue
or
Violet

2007-01-02 11:15:19 · 3 answers · asked by Anonymous in Other - Science

What is the process of extrating oxygen from carbon dioxide. Or does it have any oxygen at all? If not why the O2 is in it?

2007-01-02 11:15:16 · 7 answers · asked by thewiseone 3 in Chemistry