Science & Mathematics - 2 October 2007

i really need help with this.. can u please list some websites thanks

2007-10-02 06:03:04 · 3 answers · asked by Anonymous in Zoology

In the effort to introduce legitimate science into this category, I ask this specifically of those who believe that ghost research is science, not pseudoscience. For those who believe ghosts aren't simply hallucinations or illusions, read on.

The foundational question, "What is a ghost?", must be answered scientifically before any other kind of ghost research is undertaken, since science is a process whereby new knowledge is built directly upon established knowledge. This requires:

1) Using known physical theories, show that they predict the existence of a "ghost" and that a falsifiable hypothesis can be formed and investigated.

2) Show how our knowledge of physics predicts the nature of the "ghost", i.e., define it with equations if possible.

Please be scientific. That is, your explanation has to be firmly grounded in theory, not conjecture. No handwaving about how a ghost is an echo, or an imprint on the atmosphere, or some such wild and nebulous conjecture.

2007-10-02 05:59:38 · 13 answers · asked by John 7 in Paranormal Phenomena

I want to know how to seperate an Atom. This is a question for my chemestry class and I cant seem to find any direct and understandable information on it. If you know of any means as to how to seperate an Atom, your answer would be much appriciated...thanks!

2007-10-02 05:55:36 · 8 answers · asked by Anonymous in Chemistry

besides the fact that it is expensive toy, I would like to have one of my own flying around taking pictures as I wish.

2007-10-02 05:54:44 · 6 answers · asked by Anonymous in Astronomy & Space

im in 11th grade and still doing 9th grade math and i wont be able to graduate next year if i dont get 100% on this test,
so help?

2007-10-02 05:51:56 · 8 answers · asked by Emily 2 in Mathematics

Calculate the final volume in mL of a solution obtained if 100.0 mL of 6.27 M NaCl is diluted to 1.81 M.

2007-10-02 05:47:14 · 1 answers · asked by mike g 1 in Chemistry

tangent line...
f(x+h) -f(x)/h
as the lim of h goes "0"

2007-10-02 05:43:33 · 2 answers · asked by Anonymous in Mathematics

2007-10-02 05:42:41 · 8 answers · asked by bayleycs 1 in Mathematics

please i need help i suck so bad at math and if i dont get this answer right my teacher is going to put me in homeschooling!!! i need helpppppp

2007-10-02 05:41:07 · 2 answers · asked by Emily 2 in Mathematics

Okay, so this is my assignment but I have no idea how to do it. I've been trying to figure it out since last night.

b. write out the substrates, enzymes and products of at least three steps in the following format, with one enzymatic step per line:

Substrates --[enzyme]--> product(s)

c. Indicate the source you used for obtaining this information.

He gave an example:
Pathway: Pyrimidine biosynthesis
1. bicarbonate + glutamine + 2 ATP --[carbamoylphosphate synthetase]--> carbamoylphosphate + glutamate +2 ADP + 2 phosphates
2. carbamoylphosphate + aspartate --[aspartate transcarbamoylase]--> carbamoylaspartate + phosphate
3. carbamoylaspartate --[dihydroorotase]--> dihydroorotate + water
Source: Neuhard, J. & Nygaard, P. (1987). Purines and Pyrimidines. In Escherichia coli and Salmonella typhimurium: Cellular and Molecular Biology.

The pathway I've chosen is Oxidative Phosphorylation.
So could someone help me please?

2007-10-02 05:40:45 · 1 answers · asked by lety 2 in Biology

i need help i figured out hydrochloric with mgnesuim gives 2nd order but stuck on what ethanoics order of reaction is could help me with this experiment.i am using 15cm3 of acids and 0.17g of magnesuim ribbon in an gas stringe experiment.

2007-10-02 05:38:55 · 1 answers · asked by Anonymous in Chemistry

A follower ABCD is held against a circular cam by a stretched spring which exerts a force of 6 lb for the position shown. Knowing that the tension in rod BE is 4 lb, determine
(a) the force exerted on the roller at A
(b) the reaction at bearing C

Diagram:
http://i231.photobucket.com/albums/ee84/janise87/16.jpg

2007-10-02 05:38:04 · 1 answers · asked by Anonymous in Engineering

i. Aluminium(s)
ii. Fe3O4(s)
iii. Al203(s)
iv. Fe(s)
v. H2O2(l)
vi. H2O(l)
vii. O2
viii. HCI

2007-10-02 05:36:44 · 1 answers · asked by virgo 1 in Chemistry

A solid sphere, a hollow sphere and a disc, all having same mass and radius, are placed at the top of a smooth incline and released. How do we prove that all will take same time in reaching the bottom

2007-10-02 05:35:59 · 5 answers · asked by sameerteacher01 1 in Physics

2007-10-02 05:32:38 · 4 answers · asked by Anonymous in Engineering

When the water reaches the bottom of the falls, its speed is 25.9 m/s. Neglecting air resistance, what is the speed of the water at the top of the falls?

2007-10-02 05:32:13 · 3 answers · asked by Anonymous in Physics

this sounds like a dumb question buti was sitting in class today and i wondered why do thing turn black when they are lit on fire!! i mean like not red or blue

2007-10-02 05:29:47 · 4 answers · asked by jimmy 2 in Other - Science

3. Which of the following waves have the longest wavelength?

a. ultraviolet

b. visible green

c. visible red

d. gamma

4. Which of the following waves have the highest frequency?

a. radio

b. visible yellow

c. infrared

d. ultraviolet

2007-10-02 05:26:45 · 7 answers · asked by Binky 3 in Astronomy & Space

Where did dissemination occur in "lower" plants? During the gametophyte or during the sporophyte generation?

2007-10-02 05:12:52 · 1 answers · asked by Anonymous in Botany

2007-10-02 05:11:27 · 4 answers · asked by Michael H 1 in Engineering

ok. i'm doing a physics experiment. in this exp. i have two tuning forks and a string. on this string there is a piece of paper. i have to hit the tuning forks, with different lengths of the string and have to notice when the paper on the string vibrates more. any help? i cannot do it in reality because it's only an experimental design!
i ahve to get to know what is the relationship between the frequency and the length

2007-10-02 05:11:11 · 3 answers · asked by yawm_pride 1 in Physics

2007-10-02 05:06:10 · 4 answers · asked by Anonymous in Astronomy & Space

f(x)=2x sqrt of (X^2 +3)

2007-10-02 05:04:15 · 10 answers · asked by mrkittypong 5 in Mathematics

In class we used calorimeters to determine the caloric density of one planters peanut, but the resulting number was much much lower than the planters label indicates. My teacher asked us why that is and of course i said because the serving size on the label is much larger than the one we used in the experiment. she said this was wrong. the only hint she gave is that every year in her class the experiments caloric density gets lower and lower. Does anyone know why?

2007-10-02 05:02:02 · 2 answers · asked by abasylph2007 1 in Physics

let f(x)=Ax + (B/x^2) where A and B are constants. Find values for A and B so that the line y=2x+1 is tangent to y=f(x) when x=-1.

I have no idea how to do this./

i keep getting different answers and different ideas how to do this...none of the answers work out to be tangent and the problem is really getting annoying...please help!

whatever i get the graph is not a tangent

2007-10-02 05:00:53 · 3 answers · asked by Mr. Vill 1 in Mathematics

Romeo and Juliet saw each other when they were 270 feet apart. Romeo began running toward Juliet at a rate of 16ft/sec. At the same moment, Juliet began running toward Romeo at the rate of 14ft/sec.

How many secods after they started running will they meet?

How far will Romeo have run then?

Thank you!!!!!!

2007-10-02 04:52:42 · 6 answers · asked by jayjay 2 in Mathematics

2007-10-02 04:49:10 · 5 answers · asked by Anonymous in Biology

one is
solve the following equation to find x in terms of a and b, assuming that a can not equal b.
i know the answer to this is x = -a-b but how do you get to that.
the other is
x in terms of y and t, assuming that y+3t can not equal 0.
i have attempted this one and worked it out to be x= 3t - y. but am still not sure how to solve them.
if you could explain very simply and clearly to me how you solve these that would be great as i am having problems understanding what to do.
thank you for any help you can give.

2007-10-02 04:46:36 · 4 answers · asked by Anonymous in Mathematics

2007-10-02 04:43:35 · 2 answers · asked by damigurl05 1 in Biology

plz help

2007-10-02 04:38:57 · 3 answers · asked by Anonymous in Chemistry