Science & Mathematics - 7 October 2007

In terms of lifestyle, health, job opportunities, pressure, effects on family life, obligations, etc.

2007-10-07 23:54:31 · 10 answers · asked by Anonymous in Medicine

What is the relation between number of samples and sampling frequency?

2007-10-07 23:47:03 · 5 answers · asked by Laddu G 1 in Engineering

2007-10-07 23:39:35 · 3 answers · asked by Anonymous in Mathematics

And long division........ how does it work?

2007-10-07 23:39:34 · 13 answers · asked by Anonymous in Mathematics

for electrical engineering subject

2007-10-07 23:37:47 · 3 answers · asked by juben 1 in Engineering

2007-10-07 23:37:24 · 1 answers · asked by yadunanth r 1 in Biology

How I can remove colour of water for water treatment?

Which is the best coagulation & Flocculation Agent?

Up to what micron size the reverse osmasis filter remove the contamination?

2007-10-07 23:33:41 · 2 answers · asked by sathish p 1 in Engineering

i got y = 2x+1 as end answer can anyone verify this answer?

2007-10-07 23:29:55 · 3 answers · asked by Ronny A 1 in Mathematics

2007-10-07 23:29:30 · 10 answers · asked by William Scheef Jr. 2 in Physics

2007-10-07 23:27:19 · 3 answers · asked by chrln_buenaventura 1 in Physics

I understand the way we see colour but what i dont understand is why certain things absorb & reflect certain types of light is it what the are made of? Like the elements or has it got to do with something else? Like whatever it is that makes the plants green (i forget what its called) it absorbs red & blue light but reflects green light, why? is it just because that the way it is?

2007-10-07 23:26:17 · 3 answers · asked by asphyxia 3 in Physics

What does eigen value and eigen vector means? Why is it important to calculate them? Is there any practical application which will make me to understand its use?

2007-10-07 23:26:08 · 5 answers · asked by Anonymous in Engineering

please help me by 7:30

2007-10-07 23:21:26 · 5 answers · asked by hi 1 in Physics

a william patrick holden.last heard off in stretton-on-dunsmore,near rugby.warwickshire.uk in 1963

2007-10-07 23:06:22 · 3 answers · asked by lozzy 1 in Geography

A student wants to determine the coefficients of static friction and kinetic friction between a box and a plank. She places the box on the plank and gradually raises one end of the plank. When the angle of inclination with the horizontal reaches 34o, the box starts to slip, and it then slides 2.7 m down the plank in 1.7 s at constant acceleration. What are (a) the coefficient of static friction and (b) the coefficient of kinetic friction between the box and the plank?

2007-10-07 22:59:25 · 2 answers · asked by Anonymous in Physics

Two bags contain coloured balls.
Bag A contains 5 black balls and 3 white balls.
Bag B contains 6 black balls and 5 white balls.
A ball is drawn at random from Bag A. If a black ball is drawn from Bag A, it will be put back into Bag A. If a white ball is drawn from Bag A, the white ball drawn will be put into Bag B. A second ball is then drawn at random from Bag B.

(i) Calculate the probability that the two balls drawn are both black.
Ans: 15/44

(ii) Calculate the probability that the two balls drawn are of a different colour.
Ans: 83/176


Please show your workings clearly and explain...thank you.

2007-10-07 22:38:34 · 4 answers · asked by Anonymous in Mathematics

2007-10-07 22:25:39 · 2 answers · asked by Anonymous in Medicine

can someone give me this very hard questions answer?

(9 raised to the power of 62773 + 2) raised to the power of 83721

it may look like this:

(9 62773 + 2) 83721

since they are squares, they should be small.

2007-10-07 22:23:56 · 4 answers · asked by ? 2 in Mathematics

Given that α and β are the roots of the equation x^2 = 3x + 5,
show that α^4 = 57α + 70.

2007-10-07 22:23:09 · 2 answers · asked by Anonymous in Mathematics

Given that vector OA = (p, 4), OB = (4, 1) and OC = (1, 3),

(i) find the value of p if vector OA and BC are parallel.

Ans: -6

Please show me your workings clearly.....and explain too..Thanks

2007-10-07 22:20:15 · 3 answers · asked by Anonymous in Mathematics

2007-10-07 22:09:25 · 3 answers · asked by varunshrivastava 1 in Medicine

there are n people, standing in a circle, first person have a gun, he kills the the person standing next to him, and passes the gun to the next living man, the person who recieves the gun, does the same, this is continued till 1 person in the circle stays alive with a gun. i want to know the number of the last man who is alive with the gun.
example; n=5, first guy kills the 2nd one and passes the gun to the 3rd guy, 3rd kills 4th and 5th recieves the gun, 5th kills the 1st and 3rd recieves the gun, 3rd kills 5th, so 3rd survives.

2007-10-07 21:53:54 · 6 answers · asked by pieceof_iron 2 in Mathematics

i really wannna know

2007-10-07 21:46:13 · 5 answers · asked by Anonymous in Astronomy & Space

Write down an expression, in terms of n, for the nth term of the sequence 1, 7, 13, 19, 25, 31, ...

The answer is 6n - 5

I don't understand why it is -5. I know it's 6n as the term increases by 6 down the sequence..But why do you need to put a -5 at the back? Pls explain

2007-10-07 21:44:15 · 6 answers · asked by Anonymous in Mathematics

2007-10-07 21:26:10 · 8 answers · asked by christina 2 in Earth Sciences & Geology

How can I solve this to have a better representation in order to get a Big Oh notation for this.
n * (log base e (log base 2 (n)))

2007-10-07 21:20:34 · 1 answers · asked by iloveusa 2 in Mathematics

2007-10-07 21:18:37 · 5 answers · asked by Anonymous in Weather

we were canoeing the fulton chain of lakes in upper ny state pretty trippy looking up at the moon thinking ....

2007-10-07 21:10:28 · 14 answers · asked by ? 6 in Astronomy & Space

Since some people say that aluminum is a cause of alzheimers disease, I know many people won't use deoderants any more that contain aluminum. Also since heating plastic has been known to have dangerous cancer causing fumes, what about heating aluminum pans in the oven?? Could aluminum give off anything (fumes, chemicals, etc) when heated to high temperatures?

2007-10-07 21:09:48 · 2 answers · asked by Wintergirl 5 in Chemistry

2007-10-07 21:05:41 · 4 answers · asked by yien 1 in Physics