Science & Mathematics - 27 January 2007

2007-01-27 12:45:15 · 4 answers · asked by Dave H 1 in Mathematics

a) breath fogging a mirror
b) bleaching a stain
c)milk souring

2007-01-27 12:43:54 · 9 answers · asked by happy days 1 in Chemistry

2/x-1 = 4 - x/x-1

In other words:
**2 over x-1 = 4 minus x over x-1**

2007-01-27 12:41:45 · 3 answers · asked by Anonymous in Mathematics

I wasn't sure if I spelled the name right.

2007-01-27 12:41:26 · 9 answers · asked by vote4pedro0529 1 in Geography

2007-01-27 12:41:15 · 3 answers · asked by Susan O 1 in Biology

i need to make a stirling engine for a science fair, i have made a test tube stirling engine and it dont work, where can i get a cheap glass syringe, and how do i make a stirling engine???????

2007-01-27 12:37:48 · 3 answers · asked by Anonymous in Engineering

There's a gigantic ring around the moon tonight, one of the biggest ones I've ever seen. What is it?

2007-01-27 12:34:48 · 7 answers · asked by hurricanebrian 2 in Astronomy & Space

i ned help with this problem:

C.E Bemis and colleagues at oak ridge national laboratory confirmed the synthesis of element 104, the half-life was only 4.5 s. Only 3000 atoms of the element were created in the tests. How many atoms were left after 4.5 s?

2007-01-27 12:34:42 · 2 answers · asked by Mia16 3 in Chemistry

2007-01-27 12:31:35 · 3 answers · asked by >() 1 in Biology

The height of one step is 18.5 cm and there are 10 steps. I ran twice. (up and down, up and down)
So do you do 18.5 X 20=370 cm.?
might be correct but not sure...

My weight in pounds is 140, in kg it is 63 and in newtons it is 190.4
to find work----- to find work,(W=fxd) do you multiply 190.4X0.37
I converted the 370 into meters because work is measure in Newtons meter Joules.

How do you find power? (p=w/t)

My time was 16.79.....will it be 140/16.79?

2007-01-27 12:31:19 · 5 answers · asked by ghettoco 1 in Mathematics

a. (-8,2); x= -8; up
b. (-8,-2); x= -8; down
c. (8,-2); x= 8; up
d. (8,2); x=8; up

2007-01-27 12:27:19 · 4 answers · asked by lana l 1 in Earth Sciences & Geology

2007-01-27 12:26:34 · 1 answers · asked by n 1 in Chemistry

Based ONLY on molecular structure (no pH, no info provided) AND when it's a huge molecule, I'm not talking NaOH, I'm talking BIG crazy scary drug molecules

2007-01-27 12:25:38 · 2 answers · asked by fingerseven11 1 in Chemistry

please put in scientific notation thank you so much

2007-01-27 12:24:09 · 4 answers · asked by n 1 in Chemistry

can i apply l'hospital's rule to negative infinity minus infinty? ex. lim f(x)-g(x)= -(inf)-(inf)
put this one on already, but need more info

2007-01-27 12:23:13 · 4 answers · asked by joe s 1 in Mathematics

2007-01-27 12:22:57 · 5 answers · asked by Anonymous in Physics

a. y= -3/2(x+8)^2+4
b. y= -1/4(x+8)^2+4
c. y= 3/2(x+6)^2-2
d. y= -3/2(x-8)^2+4

2007-01-27 12:22:04 · 3 answers · asked by lana l 1 in Mathematics

How would you begin anti-differentiating this problem?
dx / ( sqrt(x) * ( 1 - 2*sqrt(x) )

Thank you!

2007-01-27 12:21:30 · 2 answers · asked by AlaskaGirl 4 in Mathematics

2007-01-27 12:21:01 · 3 answers · asked by a-m 1 in Engineering

2007-01-27 12:20:56 · 3 answers · asked by juamps 3 in Other - Science

you decide to market your own custom computer software. You must invest $3784 in computer hardware and spend $2.90 to buy and pakage each disk. If each program sells for $11.50, how many copies must you sell to break even?

plz explain how you got to the answer step by step

thx soo much

2007-01-27 12:20:04 · 6 answers · asked by Kasra 2 in Mathematics

what is the sum of three vectors that when placed tip to tail, form a triangle? If the vectors represent forces on an object what does this imply about the object.

2007-01-27 12:19:40 · 4 answers · asked by DEXTER10 3 in Physics

I just came upon this and i need to know what the volume formula for a rectangular box is...

2007-01-27 12:19:08 · 9 answers · asked by system error 2 in Mathematics

2007-01-27 12:17:29 · 4 answers · asked by Marijoyce Y 1 in Mathematics

okay, recently, i've been spitting out blod. but alot come out, then after i spit again, there's no more blood!!! help. im scared, but i dont want to go to the doctors, because i'm so terrified of them, of the news i might get and please help.. and try not to frighten me!!!

2007-01-27 12:15:48 · 21 answers · asked by dudee 2 in Medicine

2007-01-27 12:14:42 · 2 answers · asked by RogerDodger 1 in Mathematics

2007-01-27 12:14:23 · 6 answers · asked by Marijoyce Y 1 in Mathematics

Im doing this homework and i have already a bad grade! i have no idea what to do or how to do it the teacher already ezplained i to me and everything and i still dont get it can anyone help?

2007-01-27 12:13:30 · 3 answers · asked by alwaysluckykitty 2 in Mathematics

2007-01-27 12:13:12 · 7 answers · asked by Sema 3 in Engineering

One molecule of a compound weighs 2.03 x 10-22 g. Its molar mass is:
a.48.0 g/mol
b.92.1 g/mol
c.114 g/mol
d.122 g/mol
e. None of the above

2007-01-27 12:11:08 · 3 answers · asked by Anonymous in Chemistry