Science & Mathematics - 13 February 2007

Calculate the frequency in hertz, the energy in joules and the energy in electron volts of an x-ray photon with wavelength of 2.20 A

2007-02-13 18:34:10 · 2 answers · asked by dalkeith g 1 in Chemistry

they have like a south american/asian look about them. anyone know?

2007-02-13 18:28:27 · 10 answers · asked by Yobbomate 2 in Other - Science

What are the practical applications of lowering the freezing point (by adding nonvolatile solute) to stearic acid?

2007-02-13 18:21:27 · 2 answers · asked by Jacqueline 2 in Chemistry

hey pples!!!

just studying some chemistry and i need a little help:

how many atmospheres are there in STP?...is it the same as SLC? thats what it says in one ofm y text books but my teacher said this text book makes a couple of mistakes, is this one of them?

thanks :D

2007-02-13 18:21:09 · 2 answers · asked by Anonymous in Chemistry

pictures and details of BERMUDA TRIANGLE

2007-02-13 18:19:26 · 4 answers · asked by Anonymous in Earth Sciences & Geology

Mine are lizards and ghekkos. Grose, grose, grose!!!

2007-02-13 18:19:22 · 11 answers · asked by ~ B_e_K_z ~ 5 in Zoology

This planet is very populated with all kinds of life forms and plenty of life giving water, green trees and other green stuff. These life forms driving around in their own little...whatever you call them. Even have flying machines! Are they hostile? Will they contact us? What do you think of this new discovery & what name should we call this planet?

2007-02-13 18:13:44 · 8 answers · asked by ZORRO 3 in Astronomy & Space

2007-02-13 18:13:21 · 10 answers · asked by Conffuzled guy 1 in Engineering

2007-02-13 18:12:45 · 33 answers · asked by Anonymous in Geography

2007-02-13 18:12:16 · 2 answers · asked by Anonymous in Medicine

2007-02-13 18:11:40 · 3 answers · asked by Anonymous in Medicine

Let the function f(x,n,j) equal 1 when for a sequence of integers x of length n there is also a sequence of the same integer of length n+1 contained in some real number j and zero when this is not true. (For example, f(9,2,pi)=1 because there is a sequence of 2 9s at about the hundreth decimal place.)

Let the function f(x,n,j) be given in the form of a triple infinte series:

f(x,n,j) = lim ∑ ∑ ∑a(x,q) + b(n,w) + c(j,e),
summation →∞

where the varibles q, w and e are indicies of summation. Let the functions a, b and c be continuous everywhere.

(a) Is it true that

lim ∂f/∂j = k, k < ∞ ?
j→∞

(b) Is it true that for intervals (0, j) , (j+1, j+2), etc, that the following inequalities are always true?
j
∫f(x,j,n) dj <
0

2j
∫f(x,j,n) dj < ... n→∞
j

2007-02-13 18:07:39 · 2 answers · asked by Anonymous in Mathematics

i heared it in india

2007-02-13 18:02:46 · 4 answers · asked by deiva n 1 in Astronomy & Space

192( t^4)- 320( t^3)+ 16( t^2)- 400 t-100= 0


how did you solve this??

2007-02-13 17:58:12 · 1 answers · asked by Chris 2 in Mathematics

2007-02-13 17:58:03 · 5 answers · asked by ABHISHEK M 2 in Astronomy & Space

2007-02-13 17:57:02 · 7 answers · asked by Bobby 1 in Physics

5x-3y is less than or = to 4
x+y<8
y>3

2007-02-13 17:56:17 · 2 answers · asked by rh 2 in Mathematics

2007-02-13 17:55:35 · 6 answers · asked by kimaya 1 in Mathematics

If a 5 N force were applied to the person on a car, but no movement resulted, how would you explain this phenomenon?

2007-02-13 17:55:06 · 4 answers · asked by Johnnyboy 2 in Physics

I have no clue would a bacteriophage could create antibiotic resistant bacteria.

So if you all could help me out that would be great!

2007-02-13 17:54:15 · 2 answers · asked by ktewhs4488 1 in Biology

thanks a lot.

2007-02-13 17:53:19 · 5 answers · asked by Anonymous in Biology

2007-02-13 17:52:07 · 7 answers · asked by nick 1 in Astronomy & Space

2007-02-13 17:51:45 · 4 answers · asked by Don 1 in Engineering

I know about 2 to the power of 23, but if there are 23 from the male and 23 from the female, wouldn't you multiply 23 * 23 to find the possible gamete combinations?

2007-02-13 17:44:57 · 2 answers · asked by Shushan A 2 in Biology

hello.....

wuz wonderin' if anyone can solve square root (( x^2 + 4 )) using trig identity?????????????????

im pullin my hairs out!!!

2007-02-13 17:44:11 · 8 answers · asked by Aliza Z 1 in Mathematics

If the universe is an expanding sphere than in what space is it expanding? Is there space beyond the universe? Is it more logical to think the entirety of existence is in our universe or that there are more expanding spheres out in the same space? Am I using an extreme over-simplification in referring to the universe as simply an expanding sphere?

2007-02-13 17:38:06 · 8 answers · asked by kioruke 2 in Astronomy & Space

How do you know? What difference does it make?

2007-02-13 17:35:21 · 7 answers · asked by Anonymous in Physics

2007-02-13 17:33:07 · 3 answers · asked by Jennie 2 in Biology

2007-02-13 17:32:43 · 6 answers · asked by Anonymous in Earth Sciences & Geology

2007-02-13 17:31:59 · 6 answers · asked by golmol123 1 in Engineering