Science & Mathematics - 3 October 2007

2007-10-03 23:59:02 · 2 answers · asked by jomar d 1 in Biology

What is the point of using fibreglass on cars?
Is it just for looks,????.....

2007-10-03 23:35:56 · 4 answers · asked by Tara B 1 in Engineering

2007-10-03 23:27:29 · 37 answers · asked by RANDY J B 2 in Zoology

2007-10-03 23:15:14 · 16 answers · asked by autumn_angel17 2 in Astronomy & Space

I remember this as a child. Can you still visit it or has it been made a paid to enter only area now.

2007-10-03 23:10:16 · 8 answers · asked by Anonymous in Geography

Let u(x) = g(f(x)). Find:

a) u' (1)
b) u' (2)
c) u' (3)

Here's a link to the graph

http://www.picturetrail.com/gallery/view?p=999&gid=17982084&uid=9963653&members=1

2007-10-03 22:35:43 · 2 answers · asked by i<3WL 2 in Mathematics

2007-10-03 22:25:16 · 5 answers · asked by bottle babe 4 in Astronomy & Space

R=kpM^n

R=46.7
p=60
M=10
k and n are constants.

2007-10-03 22:23:03 · 5 answers · asked by bmxbandit23 2 in Mathematics

2007-10-03 22:10:03 · 5 answers · asked by Anonymous in Mathematics

I have a bag of 6 balls, 2 red, 2 blue and 2 green. How many possible combinations are there of all six balls.

What if there were 9 balls 3 of each colour? How many combinations are there of all nine balls?

How did you work it out?

Please help!! Thank you!!

2007-10-03 22:06:04 · 2 answers · asked by Anonymous in Mathematics

if black holes are accepted as fact, and matter and light are sucked in due to a high gravitational force,then it must go somewere? if it passes through the black hole and emerges on the "other side" as a white hole as has been stated by others,then surely we would have found a white hole by now. as in all that light and matter shooting out into space must be vissible from anywere in the universe? I mean this thing sucks in stars..

2007-10-03 22:00:16 · 12 answers · asked by strongbow 3 in Astronomy & Space

It is well known that the limit of 1/x is zero as x approaches infinity, but too many don't know how to prove it. Using the definition of limits, how to prove? i could not understand the book proof.

2007-10-03 21:51:26 · 3 answers · asked by Math 7 in Mathematics

Let Z denote the set of all intebers, and let

A={x|x=3p-2 for some p in element Z}
B={x|x=3q+1 for some q in element Z}.

Prove that A=B.

2007-10-03 21:49:34 · 4 answers · asked by garlin104300 1 in Mathematics

2007-10-03 21:48:16 · 7 answers · asked by Anonymous in Mathematics

Lawrence, Peter and Richard play a game in which four coins are tossed. Lawrence wins if there is 0 or 1 head. Peter wins if there are 2 heads. Richard wins if there are 3 or 4 heads.

Find the probability that

(ai) Richard will win the game,
Ans: 5/16

(aii) Peter will win the game,
Ans: 3/8

(b) The game is played twice. Find the probability that Lawrence will win one of the two games.
Ans: 55/128

Please show your workings clearly...I'm confused of how to do these questions...Please help..Thanks.

2007-10-03 21:47:34 · 5 answers · asked by Anonymous in Mathematics

Basically, how can cholesterol block an artery?

2007-10-03 21:29:40 · 3 answers · asked by Echoed Eternity 1 in Medicine

2007-10-03 21:11:25 · 9 answers · asked by enziguri2000 1 in Mathematics

2007-10-03 21:07:59 · 4 answers · asked by rafa 1 in Mathematics

2007-10-03 21:06:15 · 6 answers · asked by Anonymous in Geography

Imagine a person floating in space(vacuum). If he fires a rocket launcher in space, both the rocket and the man will move in opposite direction with a certain velocity. However, will the man and the rocket travel in space forever?

2007-10-03 21:03:22 · 7 answers · asked by ninjatortise 2 in Physics

2007-10-03 20:52:38 · 2 answers · asked by Anonymous in Earth Sciences & Geology

I get dy/dx = [(3x - 7) (40x^7) - (5x^8 - 3) (3)] / (3x - 7)^2

But how to simplify it further? Can show me the steps and explain? Thanks

2007-10-03 20:48:11 · 2 answers · asked by Anonymous in Mathematics

How does litter/waste/rubbish disposed on a beach affect sand dunes?...I'm doing a geography paper!

2007-10-03 20:48:02 · 2 answers · asked by cutie_chick30 1 in Geography

need to know my height in centimeters or feet/ inches, like 5'8 or something.

2007-10-03 20:46:14 · 6 answers · asked by Elisabeth R 3 in Mathematics

2007-10-03 20:34:23 · 5 answers · asked by Effrem 1 in Mathematics

Horrible question...Does it even have an answer?



A cone is circumscribe around a sphere. The radius of the sphere is 5 units.

The accompanying illustration is of an equilateral triangle (although you cannot assume that this is correct) with a circle touching all three sides, almost like a tangent. From the bottom left corner to the circle’s center there is a line, where the radius is shown as 5 and the rest of the way to the corner is x. From the centre of the circle, strait down the bottom of the original triangle forms a line of 5 units and a 90 degree angle. All of this forms a second triangle inside the first. We were told this is so the you can use the Pythagorean Theorem.

a) Write a formula for the volume, V, of the cone in terms of x. What kind of function is V?
b) Determine the roots of the function in part a. Do the roots have any geometrical meaning? Explain.
c) What is the domain of the function in part

2007-10-03 20:32:43 · 2 answers · asked by C. G 1 in Mathematics

2007-10-03 20:17:02 · 12 answers · asked by thomas1562005 1 in Zoology

And how do I find the distance between these points.
Thanks
Dave

2007-10-03 20:07:36 · 7 answers · asked by Anonymous in Mathematics

Find all the angles between 0 and 360 degrees inclusive which satisfy the equation

(i) 9 tan x = cot x

Please could you also tell me what are the important things or points that I have to look out for so as to make sure that I have done the trigonometry questions correct? Thanks a lot.

2007-10-03 20:05:40 · 2 answers · asked by Anonymous in Mathematics

pls help me I only need small piece for analysis...

2007-10-03 19:28:22 · 3 answers · asked by Gospelo 1 in Engineering