Science & Mathematics - 29 October 2006

Why sometime urine is urine like yellow and sometime urine is water like transparent ?

2006-10-29 13:18:09 · 23 answers · asked by yajackzhan 2 in Biology

equation:
( (1) / (x-1) ) + ( (3) / (x+1) ) = ( (4) / (x^2 - 1) )

i know the first step is to divide by the common denominator,
which is (x+1)(x-1), but after that i'm at a lost...thanks for the help, really appreciate it.

2006-10-29 13:17:49 · 2 answers · asked by shih rips 6 in Mathematics

i can only come up with X * (X + 1) = 4160, which is pretty difficult for 7th grade algebra.

2006-10-29 13:16:12 · 7 answers · asked by James S 2 in Mathematics

I heard it was LASIK... or is it LASEK?? What's the difference?

2006-10-29 13:15:50 · 6 answers · asked by Sir Guitarist 2 in Medicine

This is my last hope, I've been searching for literally hours and can't find the answer. I need it for part of my science project.

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

2006-10-29 13:10:08 · 13 answers · asked by rai_sahib1971 2 in Zoology

2006-10-29 13:09:36 · 8 answers · asked by aryscary001 1 in Earth Sciences & Geology

A weight of 1200 N rests on a lever at a point 0.50 m from a support. On the same side of the support, at a distance of 3.0 m from it, an upward force with magnitude F is applied. Neglect the weight of the board itself. If the system is in equilibrium, what is F?

2006-10-29 13:08:09 · 4 answers · asked by Anonymous in Physics

When you turn a key to start a car, electrons migrate from positive battery terminal through the electric network to the starter motor and back to the negative battery terminal. Estimate the time this takes. (show me how you did it)

2006-10-29 13:07:24 · 3 answers · asked by OPrime 2 in Physics

A rod being used as a lever is shown in the figure below . The fulcrum is 1.2 m from the load and 2.4 m from the applied force. If the load has a mass of 19.6 kg, what force must be applied to lift the load?

2006-10-29 13:07:09 · 3 answers · asked by Anonymous in Physics

It's the mosquito for me!

2006-10-29 13:05:15 · 21 answers · asked by Mike S 7 in Zoology

I am doing a chemistry project on chloroform and my questions are: what is the First Aid information if ingested? And what are the uses of this chemical? Also, anyone have any pictures of it?

2006-10-29 13:02:41 · 8 answers · asked by untilyoucamealong04 3 in Chemistry

is
x+a=lyl the same as
lx+al=y?

2006-10-29 13:01:26 · 10 answers · asked by uluvsoop 3 in Mathematics

I really need help with how to solve the following question:

A hydrate of zinc nitrate has the formula Zn(NO3)2 * xH2O. If the mass of 1 mol of anydrous zinc nitrate is 63.67% of the mass of 1 mol of the hydrate, what is the value of x?

Note: 3 and 2 in the formula are subscripts.

In the book the answer to the question is x= 6, but I can't seem to get this answer. I need to know how to do it.

2006-10-29 13:01:09 · 3 answers · asked by angelslove 1 in Chemistry

2006-10-29 13:01:01 · 8 answers · asked by Anonymous in Zoology

i looked on yahoo and google...does anyone have a suggested webiste or even better the answer???

2006-10-29 13:00:53 · 1 answers · asked by shawnjordan14 2 in Physics

2006-10-29 13:00:38 · 9 answers · asked by tomthefrog51 4 in Astronomy & Space

In a family there are two cars. The sum of the average miles per gallon obtained by the two cars in a particular week is 75 . The first car has consumed 25 gallons during that week, and the second has consumed 15 gallons, for a total of 1475 miles driven by the two cars combined. What was the average gas mileage obtained by each of the two cars in that week?

First car : Miles per gallon
Second car Miles per gallon

2006-10-29 12:59:22 · 6 answers · asked by Anonymous in Mathematics

tig welding

2006-10-29 12:58:27 · 7 answers · asked by ernest n 1 in Engineering

suppose "y" is directly proportional to the second power of "x". if "x" is halved, what happens to "y"? considering that the constant proportionality is positive. thanks for the help.

2006-10-29 12:56:19 · 5 answers · asked by shih rips 6 in Mathematics

2006-10-29 12:55:50 · 4 answers · asked by JJ L 1 in Chemistry

2006-10-29 12:53:57 · 7 answers · asked by melanie h 1 in Zoology

2006-10-29 12:53:24 · 9 answers · asked by Eric Inri 6 in Engineering

equation:
y=kx^(3/2)
variables:
y=96
x=16
solve for k.
do i need to divide both sides by 16 first? thanks for the help.

2006-10-29 12:53:13 · 5 answers · asked by shih rips 6 in Mathematics

2006-10-29 12:51:25 · 7 answers · asked by JJ L 1 in Chemistry

What are the odds of a brown eyed parent and a blue eyed parent having a blue eyed child? A green eyed child?

Thanks in advance!

2006-10-29 12:50:40 · 10 answers · asked by Margie 2 in Biology

Realy think about this one.

2006-10-29 12:49:53 · 13 answers · asked by thoushaltcountto3 1 in Astronomy & Space

i was wondering which species of mammal has the largest population, and what that population was?

2006-10-29 12:48:31 · 9 answers · asked by shnessa 1 in Zoology

A spirometer lung capacity and volume. WHy are these measurements important.

2006-10-29 12:47:41 · 2 answers · asked by .::Princess::. 1 in Biology

I have many signals that I'm using to determine the temperature of a material. There are a few hundred signals. Each signal has a different amount of signal to noise. Knowing the signal to noise ratio how can I optimally average all the signals together to get the best overall measurement?

2006-10-29 12:45:58 · 1 answers · asked by professional student 4 in Engineering