Science & Mathematics - 19 August 2007

2007-08-19 04:55:01 · 5 answers · asked by Anonymous in Mathematics

2007-08-19 04:54:33 · 12 answers · asked by Xpi 3 in Engineering

I do not even know where to begin can someone help me?

2007-08-19 04:54:13 · 4 answers · asked by Anonymous in Mathematics

Help please, I can not grasp this question. I would be grateful for any help.
Thank you

2007-08-19 04:45:15 · 8 answers · asked by momscharm1964 1 in Mathematics

What is the fifth term of the expansion of (a + b)^8?

I get how to do everything up to the point where you need to find the coefficient. Somehow I missed this in my 13+ years of mathematical training, and I can't find an internet source that adequately explains how to solve this for the coefficient! Please help! Thank you! I'll pick a best answer TODAY!!!!!

2007-08-19 04:44:07 · 5 answers · asked by Anonymous in Mathematics

One number is 3 less than another. If 10 times the smaller number minus 3 times the larger number is 33, find the two numbers

2007-08-19 04:43:47 · 7 answers · asked by tbond_1969 1 in Mathematics

Could any one help me. I have been told a few times I have a gift because I have seen ghosts and the only place I've lived has had a ghost in it except the one I'm in now. (I've lived here nearly a year.)
I can also sense if a house is haunted.
If I do have a gift I would love to learn how to use it. I may have been given it for a reason.

2007-08-19 04:41:06 · 10 answers · asked by sam 2 in Paranormal Phenomena

2007-08-19 04:40:58 · 7 answers · asked by Prackash 1 in Chemistry

I have then soaking in water currantly and an not sure how to proceed
Do I tie them together or band them? NAyone ever done anything like this?

2007-08-19 04:40:10 · 2 answers · asked by Chaza Pender 3 in Botany

Many tiny creature make their abode at the bottom of the sea when it is hard to sink a earthling there? mostly they would float at certain level .And also how those creature get their oxygen without fin or coming up for air?

2007-08-19 04:35:57 · 7 answers · asked by nomorecypher 1 in Earth Sciences & Geology

2007-08-19 04:35:39 · 2 answers · asked by sony r 1 in Engineering

I have a Diesel generator using leroy sommers alternator and which uses intelilite MRS 11 controller , it is 380 V , 50 Hz , yesterday i started having problems , after running the genset for like 12 seconds it shuts down and i get two error msgs the first one is : Shutdown Level for Phase 1 under volts
the second error msg is : Shutdown Level for Gen voltage Unbalance .
in the first 12 seconds the voltage on 3 phases got no problem and after 12 seconds the generator auto shuts down and i cannot seem the find the problem , any help will be appreciated

2007-08-19 04:32:55 · 4 answers · asked by ahmedaytona 3 in Engineering

I had this dream that I was in medevil porper clothes. I was walking down a dirt road with my family. But they wern't my family that I have got. Also I hate wearing shoes I don't know if that's anything to do with it.

2007-08-19 04:32:43 · 5 answers · asked by sam 2 in Paranormal Phenomena

2007-08-19 04:24:59 · 17 answers · asked by Betty K 1 in Physics

can someone show me how do solve this problem

2007-08-19 04:23:34 · 8 answers · asked by Anonymous in Mathematics

Sorry, i am quite confused with "biomedical" and "bioscience"..May i know the differences?? Thankyou..

2007-08-19 04:21:43 · 4 answers · asked by Anonymous in Biology

We have got a lot still to accomplish technologically, I think at least another 70 to 150 years before we can travel to the nearest star, what do you guys think, am I being optimistic?

2007-08-19 04:16:59 · 8 answers · asked by zooz 2 in Astronomy & Space

my friend told me to find my dog in uranus. Where is that?

2007-08-19 04:12:23 · 24 answers · asked by Anonymous in Astronomy & Space

I have a machine pulling a weight, attached by a rubber band, up an incline that has a slowly varying slope. I know the position of the machine well (about 0.1%), but the rubber band introduces a great deal of positional uncertainty. I want to know the position of the weight at any time T. Fortunately, I have accelerometers attached to the weight.

Is a Kalman filter suitable for this task?
1) My accelerometer measurements are simply observations, not controller inputs
2) The mean of my position error is most likely _not_ zero (the weight will typically lag the machine position)
3) How can I eliminate the gravity component of the acceleration so that I can use it in the model (note that the slope of the incline varies, albeit slowly)?
4) I have no way to know or model the frictional forces. I can only sense the effect through the accelerations.
5) In some cases the weight comes to an abrupt halt with subsequent stretch in the rubber band followed by rapid acceleration

2007-08-19 04:12:07 · 2 answers · asked by dogsafire 7 in Engineering

This is the direct question from my stupid science experiment that i didn't get finished.....
1. Look at the picture under Low Power (didn't get to)
2. Look at the picture under High Power (didn't get to)

You have just witnessed Resolving Power..................Explain what it is...........

CAN YOU HELP ME, I AM NOT A SCIENTIFIC PERSON BUT I CAN'T FIGURE IT OUT!!!!!! please explain in a not tooo scietific way!

2007-08-19 04:10:48 · 2 answers · asked by Anonymous in Biology

2007-08-19 03:58:47 · 2 answers · asked by CHIRAG Gupta 1 in Earth Sciences & Geology

2007-08-19 03:52:00 · 2 answers · asked by mrsjoshgroban 1 in Physics

How would we go about making mars livable for humans and how long would it take? And do you think we should?

2007-08-19 03:50:29 · 11 answers · asked by darev2005 1 in Astronomy & Space

1. Consider the expression
(x^2)/9 + (y^2)/4 = 1

whose graph is an ellipse. We wish to find the slopes of the tangent lines to the graph of this ellipse at the point x = 1.

a) Solve the above expression for the variable y. How many solutions do you obtain? Graph each of these solutions separately. What do you notice when these graphs are viewed together on the same set of coordinate axes?
b) While the ellipse itself is not the graph of a function (why?), each of the solutions for y you obtained in (a) does represent a function (why?). In order to obtain an answer to our original question regarding the slopes of the tangent lines at x = 1, describe what you would do with the functions obtained in (a), and carry out this operation.

2007-08-19 03:48:04 · 2 answers · asked by Anonymous in Mathematics

1. Consider the expression
(x^2)/9 + (y^2)/4 = 1

whose graph is an ellipse. We wish to find the slopes of the tangent lines to the graph of this ellipse at the point x = 1.

a) Solve the above expression for the variable y. How many solutions do you obtain? Graph each of these solutions separately. What do you notice when these graphs are viewed together on the same set of coordinate axes?
b) While the ellipse itself is not the graph of a function (why?), each of the solutions for y you obtained in (a) does represent a function (why?). In order to obtain an answer to our original question regarding the slopes of the tangent lines at x = 1, describe what you would do with the functions obtained in (a), and carry out this operation.

2007-08-19 03:46:02 · 3 answers · asked by Anonymous in Mathematics

Does anyone have a link to a site that explains how this technology works?

2007-08-19 03:43:42 · 3 answers · asked by stinkyhotdogs 3 in Astronomy & Space

For a solution to be isotonic 0.9%NaCl (Inside red blood cell), the osmolarity should be 0.308mol/L (same with RBC.) But, 0.3M Glucose has an osmolarity of 0.3mol/L, and is close to 0.9% NaCl's osmolarity...should 0.3M Glucose be considered isotonic or hypertonic?

2007-08-19 03:42:26 · 3 answers · asked by Jed Stephen 3 in Chemistry

It looks that way to me.

2007-08-19 03:38:30 · 5 answers · asked by Anonymous in Weather

2007-08-19 03:37:23 · 4 answers · asked by Anonymous in Astronomy & Space

2007-08-19 03:36:19 · 2 answers · asked by strawberrrrry 1 in Medicine