Science & Mathematics - 25 October 2007

1 centimetro cubico (cm3) é igual a 1 mililitro(mL) ou a 1 litro(L)?

vlw

2007-10-25 23:58:13 · 1 answers · asked by JD 1 in Mathematics

I am looking for genuine answers here...not some insipid crap that I watch fall off people's fingertips around here constantly.

There was an abandoned mental hospital relatively close to where I had spent the majority of my life. I felt very passionately about preserving the building and in its final days spent as much time lurking around it as possible. I had never gone there to look for ghosts, for it was truly the historical value that drew me to this place.

I took my friend Nicole for a trip up there one night, just to drive by. To keep a long story short, I had pulled up to the main gate and was about to do a three pointer to head back out. When I looked into the rear view, I saw what looked like a tiny tornado on the side of the road a few hundred feet behind us. It was a funnel of a thick fog-like consistency, about 3-5 feet tall. It struck me as odd, but I didn't think too much of it and thought perhaps there was a drain over where it was coming from.

(continued)

2007-10-25 23:52:45 · 6 answers · asked by Anonymous in Paranormal Phenomena

As far as I can see they just wander about all day, where are its offspring? How come I never see a baby spider, is it simply too small?

I saw a spider continuingly trying to get up a wall and it kept falling off, and yet every single time it tried again and again.

Are insects devoid of emotions such as anger and compassion, would it be best to illustrate how they work by saying that they are like robots with preprogrammed reactions to their immediate environment?

2007-10-25 23:52:00 · 20 answers · asked by Paul M 4 in Zoology

2007-10-25 23:50:53 · 6 answers · asked by Anonymous in Zoology

2007-10-25 23:37:58 · 16 answers · asked by Sweet kisses 1 in Weather

i think it is because

1 is it self
and 1 is 1

2007-10-25 23:29:29 · 14 answers · asked by Bumumble 3 in Mathematics

a drive belt has a power P proportional to Tv - (w v^3)/g

v is speed of belt, T is tension and w is weight per unit length of the belt.

find the speed at which power is transmitted??

i am totally lost with this, the only thing i supposedly know is that differentiation is involved although i dont know what with respect to what.

2007-10-25 23:28:38 · 1 answers · asked by fpa06mr 5 in Physics

The polynomial x^4 + 5x + a is denoted by p(x). It is given that x^2 - x + 3 is a factor of p(x),
Find the value of a and factorize p(x) completely.

2007-10-25 23:25:07 · 3 answers · asked by plolol 2 in Mathematics

Describe two advantages and two disadvantages of plywood over solid timber.

2007-10-25 23:20:08 · 5 answers · asked by Mister 4 in Engineering

2007-10-25 23:18:47 · 11 answers · asked by Anonymous in Earth Sciences & Geology

Example, the Reina Sofia Muzeum glass elevator, can it be used as fire safety lift?

2007-10-25 23:11:10 · 2 answers · asked by Mbs03 1 in Engineering

2007-10-25 23:08:29 · 8 answers · asked by Anonymous in Astronomy & Space

2007-10-25 23:08:26 · 10 answers · asked by Anonymous in Engineering

Solve the equation z² - 2iz -5 = 0, giving your answer in the form x + iy where x and y are real.

2007-10-25 23:03:13 · 4 answers · asked by plolol 2 in Mathematics

physical features that make it better?

2007-10-25 23:01:18 · 1 answers · asked by heba j 1 in Biology

2007-10-25 22:54:35 · 3 answers · asked by Anonymous in Botany

My son needs help on this question and I'm stuck myself.

A bowler wants to estimate how many wickets he will take in the next 100 cricket matches using random numbers. The digits 0,1,2,3,4 and 5 refer to the number of wickets taken. Generate random numbers to simulate how many wickets in total the bowler will take in the next 100 games.

2007-10-25 22:47:06 · 4 answers · asked by Anonymous in Mathematics

The electric field in a 2.0 mmX 2.0 mm square aluminum wire is 0.0012 N/C. What is the current in the wire?

2007-10-25 22:39:53 · 1 answers · asked by biscuits 2 in Physics

2007-10-25 22:32:56 · 22 answers · asked by Anonymous in Astronomy & Space

A train slows down as it rounds a sharp horizontal turn, slowing from 97.4 km/h to 47.8 km/h in the 12.9 s that it takes to round the bend. The radius of the curve is 136 m. Compute the acceleration at the moment the train speed reaches 47.8 km/h. Assume that it continues to slow down at this time at the same rate.

FIND: Magnitude & Direction °

2007-10-25 22:24:33 · 1 answers · asked by Justin 3 in Physics

Arrange the following metals in the order of their decreasing chemical activity :
Magnesium, Potassium, Iron, Gold

2007-10-25 22:22:19 · 4 answers · asked by meow 3 in Chemistry

A number is said to be an Armstrong number if the sum of the cubes of all
of its digits equals its value. Write a pseudo-code that given number N tells if it is
Armstrong or not. For example 153 is an Armstrong number: 13 + 53 + 33 = 153

2007-10-25 21:41:38 · 2 answers · asked by zilla_mafia 2 in Mathematics

Write a pseudo-code that prints the LCM (Least Common Multiple) of two
numbers.

2007-10-25 21:38:33 · 2 answers · asked by zilla_mafia 2 in Mathematics

g(x, y) = 2*x*y + y^4 @ (1, 1) in the direction u = (4, -3)

and also the directional derivative of g(x, y) = x^2 - 2*x*y^2 @ (2,1) along a line which makes an angle of (pi/3) to the + x axis.

Thanks in advance.
Dave

2007-10-25 21:15:28 · 1 answers · asked by Anonymous in Mathematics

Young David who slew Goliath experimented with slings before tackling the giant. He found that he could revolve a sling of length 0.600 m at the rate of 7.00 rev/s. If he increased the length to 0.900 m, he could revolve the sling only 5.00 times per second.
(a) What is the speed of the stone for each rate of rotation?
m/s at 7.00 rev/s, at m/s at 5.00 rev/s
(b) What is the centripetal acceleration of the stone at 7.00 rev/s?
(c) What is the centripetal acceleration at 5.00 rev/s?

2007-10-25 21:15:05 · 3 answers · asked by Justin 3 in Physics

The problem is that I dont have easy access to chemicals and I can not get them in small quantity. So buying in bulk means that they are gonna be expensive(I mean the total cost). I already have KMnO4 and I want another oxidiser. Which one shall I prefer?

2007-10-25 21:08:42 · 3 answers · asked by blahblah82473 1 in Chemistry

2007-10-25 20:59:22 · 13 answers · asked by shy_lil_tasha 1 in Engineering

only serious answers please and no jokes.

2007-10-25 20:50:21 · 12 answers · asked by Anonymous in Astronomy & Space

using substitution..

1) ∫cos x/(2sinx+5)^3 dx
2) ∫1/t^2 e^(2/t) dx
3) ∫(2+tan x)/cos^2 x dx

and btw how do i know when to use integration by sub, parts or standard?

2007-10-25 20:48:10 · 3 answers · asked by Anonymous in Mathematics

prove that no group can have exactly two elements of order 2

2007-10-25 20:36:36 · 3 answers · asked by Dana S 1 in Mathematics