Science & Mathematics - 29 October 2006

I need to write a paper on how specific cultures confict with medical practice, and I need an interesting topic!! Some examples include doctors dealing with jehovah's witness patients; how it's against their religion to have blood transfusions, or christian scientists, who are not allowed to have any medical treatment. Basically, anything where science conflicts with culture. Any ideas? Thanks! =)

2006-10-29 13:50:03 · 5 answers · asked by Anonymous in Medicine

2006-10-29 13:49:24 · 12 answers · asked by Stephanie 4 in Biology

Let say 5 million years ago the giraffes ancestor's neck was 2 inches long, then a random mutation occured that made one giraffes ancestor's neck a couple inches longer and then that individual could eat leaves higher in the branches and survive and pass on the genes. Today the giraffes neck is like 60 inches or longer, so does this mean that an additional random mutation needed to occure for each incremental increase in the giraffes neck. For example the neck was 2 inches, then 4, then 6..... and so on, with an individual random mutation responsible for each increase. Or was it just ONE initial random mutation that occured 5 million years ago and the rest of the length increase in the neck occured because of other reasons.

2006-10-29 13:48:44 · 4 answers · asked by Ken 2 in Biology

A tower outside the Houses of Parliament in London has a famous clock commonly referred to as Big Ben, the name of its 13-ton chiming bell. The hour hand of each clock face is 2.7 m long and has a mass of 60.0 kg. Assume the hour hand to be a uniform rod attached at one end. (a) What is the torque on the clock mechanism due to the weight of one of the four hour hands when the clock strikes noon? The axis of rotation is perpendicular to a clock face and through the center of the clock. (b) What is the torque due to the weight of one hour hand about the same axis when the clock tolls 9 AM?


(a) 395 N·m; (b) 395 N·m
(a) 0; (b) 0
(a) 0; (b) 790 N·m
(a) 790 N·m; (b) 395 N·m
(a) 395 N·m; (b) 790 N·m

2006-10-29 13:48:43 · 1 answers · asked by L F 2 in Physics

I have no idea why this is?

A molecule of formaldehyde has the same shape as a methane molecule but the boiling points are a lot different. explain the difference between the boiling points, include lewis structures.

I have no idea why they are different in boiling point. One's a gas and ones a solid, but how would i draw them to show the difference?

2006-10-29 13:46:49 · 4 answers · asked by Anonymous in Chemistry

i need to know what these things are by wednesday , nov 1, 2006 becuz i have a test....have a general idea but i need more info....the internet has WAY to much info.

* cellular respiration"
* aerobic
*anaerobic (alcoholic & lactic acid fermentation)
* whats ATP and how is it produced
* endergonic & exergonic reactions
* some process invilving glucose, production of ATP, Krebs Cycle , electron transport chain.
*photosynthesis and it's cylces and processes.

PLZ give me some good info on those topics....any1 or all of them, it dont matter.

One more thing.....Whats the best way to get prepared for a test?

2006-10-29 13:45:55 · 5 answers · asked by Anonymous in Biology

(a) 0.20 M CH3NH2 (Kb = 4.40*10^-4) with 0.20 M HCl
what is the pH at equivalence point?

2006-10-29 13:45:49 · 1 answers · asked by buttrefly007 1 in Chemistry

a. They all have solid, rocky surfaces.
b. Their orbits are relatively closely spaced.
c. They are relatively smaller than the outer planets.
d. They all have substantial atmospheres.
e. They have very few, if any, satellites.

2006-10-29 13:45:36 · 8 answers · asked by Coco 2 in Astronomy & Space

The solid Ag2CrO4 forms when 2.7*10-5 g of AgNO3 is dissolved in 15 mL of 2.1*10^-3 M K2CrO4. (Assume no volume change.) What is the Qsp and Ksp?

2006-10-29 13:44:25 · 1 answers · asked by buttrefly007 1 in Chemistry

2006-10-29 13:44:20 · 15 answers · asked by The brainteaser 5 in Botany

2006-10-29 13:43:39 · 2 answers · asked by Sema 3 in Earth Sciences & Geology

a)Most planets rotate in the same direction in which they orbit.
b)Most planets orbit at the same speed.
c)Almost all moons orbit their planet in the same direction as the planet's rotation.
d)All planets orbit the Sun in the same direction.
e)Most planetary orbits lie nearly in the same plane

2006-10-29 13:43:28 · 8 answers · asked by Coco 2 in Astronomy & Space

I'm writing a hypthesis for my science project backed up by research. I need to add more..but what? My proj.: Can you make two raw eggs float in a glass of salt and plain warm water? My hypothesis so far: My hypothesis is that the raw egg will float in a glass of salt water because salt water is thicker and denser than plain water. This is because the denser a liquid, the more buoyancy it provides for an object. You will float higher when swimming in salt water than in fresh water because salt water is denser. In physics, buoyancy is an upward force on an object immersed in a fluid (a liquid or a gas), enabling it to float or at least to appear lighter. Buoyancy is important for many vehicles such as boats, ships, balloons, and airships. The buoyancy of an object depends, therefore, only upon two factors: the object's volume, and the density of the surrounding fluid.

Thanks for your help! :)

2006-10-29 13:43:20 · 5 answers · asked by Aanchi11 2 in Physics

4y / y^2-49 + y / y-7 Simplify if possible

2006-10-29 13:42:44 · 2 answers · asked by logan6847 2 in Mathematics

Find the volume (mL) and the pH of 0.135 M HCl needed to reach the equivalence point(s) in titrations of the following. (You need to find the pH at the equivalence point, not the initial pH of the solution.)

(a) 53.0 mL of 0.216 M NH3 (NH3 Kb = 1.5*10^-5)

(b) 20.0 mL of 1.28 M CH3NH2 (CH3NH2 Kb= 4.4*10^-4

2006-10-29 13:42:34 · 1 answers · asked by uscgurrl21 1 in Chemistry

2006-10-29 13:38:03 · 2 answers · asked by aryscary001 1 in Earth Sciences & Geology

Solve.

9 / y+4 = 8 / y-1

If no solution then just press the letter N

2006-10-29 13:37:19 · 7 answers · asked by logan6847 2 in Mathematics

Can someone explain reflexive properties to me for Bastract Algebra? For instance if A = {1, 2, 3} what are the reflexive ordered pairs?

2006-10-29 13:35:31 · 1 answers · asked by NONE N 1 in Mathematics

Where do you believe the stuff that made the Big Bang came from? I have always been curious and would like to know what you think. Thank you.

2006-10-29 13:35:29 · 15 answers · asked by musicgirl31♫ 4 in Astronomy & Space

A. have lower melting points than molecules with no dipole moments
B. have higher boiling points than molecules with no dipole moments
C. exist as gases
D. have their physical properties strongly influenced by London forces

2006-10-29 13:34:36 · 3 answers · asked by Ashley C 1 in Chemistry

2006-10-29 13:32:18 · 8 answers · asked by LuciBoo 1 in Geography

2006-10-29 13:29:56 · 5 answers · asked by The brainteaser 5 in Geography

2006-10-29 13:28:42 · 8 answers · asked by The brainteaser 5 in Mathematics

I've been working on this all night and I'm having alot of trouble.

2006-10-29 13:28:10 · 2 answers · asked by Anonymous in Chemistry

i need one when my class and i get to chapter 7 in algebra. and we are in chapter 3.

2006-10-29 13:26:32 · 8 answers · asked by Anonymous in Mathematics

I relly need this fast PLZ help!!

2006-10-29 13:24:06 · 2 answers · asked by Erika 1 in Physics

a constant force Fa of a magnitude 82.0 N is applied to a 3.00kg shoe box at an angle phi = 53.0 degree, causing the box to move up in a frictionless ramp at constant speed. How much work is done on the box by Fa when the box has moved through vertical distance h= 0.150m?

2006-10-29 13:22:48 · 2 answers · asked by Galaxy D 2 in Physics

In 1994 Manfred Schroeder estimated that the probability of x failing is less then x to the -6000000 what is x

2006-10-29 13:21:44 · 11 answers · asked by ismosanga 2 in Mathematics

2006-10-29 13:21:14 · 8 answers · asked by mkaamsel 4 in Mathematics

In other words, will we continue to live, but only on a another plane somewhere? I've heard others suggest this theory and have often wondered if it's a possibility.

2006-10-29 13:20:20 · 17 answers · asked by Anonymous in Astronomy & Space