Science & Mathematics - 25 November 2006

2006-11-25 06:29:56 · 10 answers · asked by rdelabarcena 1 in Earth Sciences & Geology

2006-11-25 06:28:35 · 6 answers · asked by curious 2 in Geography

I have been doing alot of experimenting at school with electricity, especially with the "Cold Fusion" process which to me is fascinating. I have wondered if an HV arc can be drawn underwater using a HV transformer (neon/flourescent light transformer) using around 9K of volts with 35 miliamperes.
As the anode and cathode I will use tungsten electrodes with
Thorium content.
Using a conductive base or solution (baking/bicarb soda I figure is safe) would help I presume. So, can it be done and if so, what would be the pros and cons.

Thank you in advance.

2006-11-25 06:26:59 · 4 answers · asked by Joseph C 1 in Physics

2006-11-25 06:26:18 · 4 answers · asked by Anonymous in Other - Science

I am not sure the book doesn't really help... pertaining to the equations nPr and nCr, I need help knowing when to use which equation.

The questions I am answering are
Express each of the following expressions in the form nPr or nCr.
a)27x26x25x24/ 4 x 3 x 2 x 1 For whish I have ..../4!
b) 30 x 29 x 28 x 27 x 26

All I want to know is how to tell to use each form, not the answers. Thanks!

2006-11-25 06:24:35 · 6 answers · asked by gg 4 in Mathematics

when you have helium tank the volume could be X but when you fill a bunch of balloons and you add their volume together, the volume is higher. i need a website link explaining the scientific reason that this happens.

2006-11-25 06:21:58 · 4 answers · asked by karen 1 in Chemistry

i use expriment design technique to determind significant factor affacting in milling provess to improve surface roughness and maxmum tool life with minmum power requarment then use kriging model to optimize process

2006-11-25 06:20:19 · 1 answers · asked by reda h 1 in Mathematics

2006-11-25 06:16:52 · 6 answers · asked by curious_inquisitor 1 in Mathematics

i m a student of chemistry at ust bannu NWFP PAKISTAN.

2006-11-25 06:13:36 · 0 answers · asked by Anonymous in Chemistry

Anyone?

2006-11-25 06:13:33 · 5 answers · asked by Kay 5 in Earth Sciences & Geology

Lenght=13cm,height=7cm,and depth=9cm

2006-11-25 06:12:19 · 3 answers · asked by Dead Man 1 in Physics

2006-11-25 06:10:19 · 11 answers · asked by blessedtexasmom 3 in Other - Science

I was eating a pomegranate the other day and notice some similarities.

2006-11-25 06:08:06 · 4 answers · asked by caitie 6 in Botany

I am usually good at math, but these 2 problems are killing me!

Solve the proof:

csc^4x - cot^4x = 2csc^2x - 1

and

cos4x - cos2x

2006-11-25 06:07:24 · 3 answers · asked by Meep, the Kind Wolf 3 in Mathematics

2006-11-25 06:04:26 · 4 answers · asked by kristin e 1 in Biology

Solve the proofs:

1) csc^4x - cot^4x = 2csc^2 - 1

2) cos^4x - cos2x
____________ = -sinx
2sin3x
**Note** For the second problem, that ____ line is supposed to be a divided by sign
any help is appreciated

2006-11-25 06:02:34 · 5 answers · asked by Ryan J 2 in Mathematics

Law of conservation of linear momentum is usually appplicable in an isolated system.Explain why under certain conditions this law is applicable even if the system is not completely isolated?

2006-11-25 06:01:46 · 4 answers · asked by hash 1 in Physics

2006-11-25 05:57:18 · 2 answers · asked by ace form outer space 1 in Zoology

For example: "Arsenic's a sure fine way to deal with a nasty rat, It works better than a mean old cat."

2006-11-25 05:55:33 · 3 answers · asked by adair124 1 in Chemistry

2006-11-25 05:54:26 · 3 answers · asked by Anonymous in Biology

need help with h.w.

2006-11-25 05:54:25 · 8 answers · asked by Italian girl 1 in Mathematics

How do i get log2 (log base 2) on my sharp EL-509V calculator?

2006-11-25 05:53:40 · 6 answers · asked by xaveria_neo 1 in Mathematics

2006-11-25 05:53:26 · 5 answers · asked by hash 1 in Physics

need a solution to this:

Root of (a2-x2 )dx

2006-11-25 05:53:25 · 6 answers · asked by Anonymous in Mathematics

they all look like there related could there be any different looking ones

2006-11-25 05:53:23 · 8 answers · asked by Imindirestraits 1 in Astronomy & Space

2006-11-25 05:52:05 · 8 answers · asked by faye 1 in Zoology

For propanoic acid (HC3H5O2, Ka = 1.3 10-5), determine the concentration of all species present, the pH, and the percent dissociation of a 0.114 M solution.
[HC3H5O2]
M
[C3H5O2-]
M
[H+]
M
[OH -]
M
pH

percent dissociation
%

2006-11-25 05:51:24 · 1 answers · asked by tanny 1 in Chemistry

2006-11-25 05:49:12 · 25 answers · asked by Anonymous in Zoology

Two campers dock a canoe. One camper has a mass of 100.0 kg and moves forward at 3.0 m/s as he leaves the canoe to step onto the dock. With what speed do the canoe and other camper move if their combined mass is 175.0 kg?

2006-11-25 05:49:04 · 5 answers · asked by lindi 2 in Physics

The quantity of momentum used with objects rotating about a fixed axis is called
a) torque
b) uniform circular motion
c) angular momentum
d) centriputal acceleration

2006-11-25 05:47:48 · 4 answers · asked by lindi 2 in Physics