Science & Mathematics - 16 August 2007

2007-08-16 23:57:06 · 3 answers · asked by cherokeebabe 1 in Chemistry

can some tell me if im doing it right please??

(i) int(4x^3-3\/```x - x^-1/2) dx
(ii) int(4x-3)^3 dx
(iii) int cosx / 3+2sinx dx

(i) int (4x/4 - 9/2 x - 1/2 x^1/2) + k
(ii) int (4(8x^2 - 6^2)^4 +k
(iii) i dont know how to go about doing this one can some help?

thanks bhavinp

2007-08-16 23:54:23 · 4 answers · asked by purejoker 2 in Mathematics

How to solve these questions? I need formulae for colege entrance exams..:D

The sales price of a car is $12,590, which is 20% off the original price. What is the original price?

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?

2007-08-16 23:52:47 · 4 answers · asked by ~steffi~ 2 in Mathematics

2007-08-16 23:49:37 · 7 answers · asked by GPS94 3 in Other - Science

If so, what is it called ?

2007-08-16 23:43:39 · 6 answers · asked by mia kc 1 in Other - Science

if yes, what was it?

2007-08-16 23:42:22 · 17 answers · asked by Somewhere in Time 3 in Paranormal Phenomena

I read it in a book "The Collapse of Chao" and saw it mentioned in the BBC Four show last night called "Atom", but I still don't really get what its about. Could anyone offer up a good explanation of the experiment and its results?

2007-08-16 23:40:31 · 7 answers · asked by rachiepachie 3 in Other - Science

How do I find the f'(x) and g'(x) of x^3(3x^2+2x+1)^-1 ?
How do I find the f'(x) and g'(x) of 4x^2(2x^2+1)^2 ?

2007-08-16 23:22:58 · 2 answers · asked by delta_922002 2 in Mathematics

Na2CO3 + H2SO4 --> Na2SO4 + CO2 + H2O

first of all,,is this equation correct?
secondly,, i want to calculate the rate of this reaction,how do i do it?
suggest me an example of the concentrations and volumes of Na2CO3 and H2SO4 to be useful for calculating the rate of this reaction,
the whole experiment should take place within 1 and half hour,,

if this is a difficult one,,can u suggest me a simple but uncommon reaction,in the sense,,uncommon elements but easy to perform and fast,, for calculating its rate,,
now ,,2Na + Cl2 --> 2NaCl,,is so common,,i want an uncommon one,,

don't suggest about sodium and potassium,, my school lab doesn't have it,,

2007-08-16 23:19:01 · 1 answers · asked by gunkedar 2 in Chemistry

2007-08-16 23:11:34 · 5 answers · asked by Nithyanand N 1 in Biology

http://www.youtube.com/watch?v=N6EKL5TO78o&NR=1

I found it on Utube, and it appears to be a real sight!

2007-08-16 22:48:11 · 28 answers · asked by V B 5 in Paranormal Phenomena

Now, we all know that at 0° Celsius, ice melts into water. We also know that at the same temperature, water freezes and turns into ice. So let me ask:

What happens when you put water into a freezer where the temperature is exactly 0° Celsius?

2007-08-16 22:35:39 · 18 answers · asked by C. Lex 2 in Other - Science

Y = -9(x^2- 3x)^7?

Use the rules of differentiation to find the derivatives of the following function. Simplify terms wherever possible, but it is not necessary to factorise and then cancel any of the expressions.

2007-08-16 22:31:25 · 2 answers · asked by vanisha j 1 in Mathematics

its so simple, but im SO confused by this one.. log base 8 (x)= -2/3. how do you solve that?? like in steps please..=)

2007-08-16 22:29:08 · 3 answers · asked by shortyyy_1o1 1 in Mathematics

Use the rules of differentiation to find the derivatives of the following function. Simplify terms wherever possible, but it is not necessary to factorise and then cancel any of the expressions.

2007-08-16 22:27:06 · 2 answers · asked by vanisha j 1 in Mathematics

So, we know that nothing in this Universe is faster than Light. Light travels at an orgasmic speed of +- 300,000 kilometers per second!
The speed of light has been discovered in the last couple of centuries (maybe +- 100 to 200 years ago for argument's sake)
Then how come we know the age of the Universe, or the known diameter of the known Universe. In theory, the Universe is approx. 4-5 Billion Lightyears in diameter!
How do we know that a Galaxy is 4 million Lightyears away. In order to get that 4, the light must travel 8 million years (4 there and 4 back). According to that theory, the Dinosaurs know about the speed of light!
Can someone please answer this difficult question?

2007-08-16 22:26:39 · 7 answers · asked by Anonymous in Astronomy & Space

2007-08-16 22:12:54 · 2 answers · asked by balqis 1 in Physics

2007-08-16 22:11:23 · 1 answers · asked by balqis 1 in Physics

Considering there has been so much rainfall lately.....

What is the average rainfall for Wisconsin and what is your Source?

2007-08-16 21:55:26 · 2 answers · asked by darcyaf1 3 in Weather

we need the very basics of manufacturing ethics

2007-08-16 21:53:50 · 2 answers · asked by Anonymous in Engineering

2007-08-16 21:46:18 · 20 answers · asked by Anonymous in Astronomy & Space

I would want to know which is the cost efficient solution (electric coil stove or LPG).also anything in terms of the power consumption of the coil stove would be appreciated.

2007-08-16 21:36:03 · 5 answers · asked by Shyam S 1 in Engineering

2007-08-16 21:33:52 · 5 answers · asked by ayecajoy 1 in Physics

1)AreAll real numbers a solution to the equation: 6x - 9 = -3(3 – 2x)

2)6(2x + 4) = 3(8 + 4x)

3)5x + 3(x - 2) = 4x - (x - 4)

4)-5(12 - 4x) = 8(3x + 9)

5)Absolute value equation:

|x + 3| - 4 = 12

2007-08-16 21:32:22 · 8 answers · asked by Anonymous in Mathematics

2007-08-16 21:15:11 · 5 answers · asked by Anonymous in Astronomy & Space

Is that science or faith?
~~~~~~~~~~~~~~~~~~~

2007-08-16 21:13:15 · 4 answers · asked by Anonymous in Astronomy & Space

random?

2007-08-16 21:11:37 · 4 answers · asked by Sporadic 4 in Mathematics

What do you think is most likely going to be the cause of the end of the humans dominance on Earth?

2007-08-16 21:10:08 · 7 answers · asked by Lancelot 2 in Other - Science

then a/c, b/a, c/b are in

2007-08-16 21:01:15 · 1 answers · asked by GANGUNDI V 1 in Mathematics

2007-08-16 20:59:23 · 14 answers · asked by goth :) 1 in Mathematics