Science & Mathematics - 12 July 2007

Help in pushover analysis.?

Help in pushover analysis.?

Can any 1 tell me what pushover analysis is?
can we apply dis analysis 2 any type of structure??
Can v apply dis 2 elevated water tanks?
plz give me brief introduction on it.
Thanks

2007-07-12 18:44:49 · 3 answers · asked by Anonymous in Engineering

2007-07-12 18:41:08 · 1 answers · asked by ivallrod 4 in Geography

hi its me again, i wanted to know how humans see colour, is it when white light shines onto an object then colours absorb and reflect?

2007-07-12 18:37:51 · 7 answers · asked by .............. 1 in Physics

I understand there is a process that separates the salt from the solution of salt and water and leaves just the 'rare earth minerals'. (These rare earth salts are meant to be beneficial when consumed)??

2007-07-12 18:34:57 · 1 answers · asked by Anonymous in Chemistry

http://espanol.pg.photos.yahoo.com/ph/lukitas04/detail?.dir=/7c30re2&.dnm=e6f8re2.jpg

i saw it outside my house in Panama city, Panama
and if you can send me a link where i can find more info and photos of the bird

2007-07-12 18:34:38 · 6 answers · asked by LuK-S C 1 in Zoology

the new angle between incident and reflected ray is found to be 45. what was the original angle between them?

2007-07-12 18:32:43 · 8 answers · asked by emmy 2 in Physics

If infinite can be defined as endless and never ending, can it be labeled a shape? When dealing with shapes, one can determine area, volume, diameter, density and whatnot. If the universe is infinite, then it has an infinite volume, area, and etc. However, which shape is thus formed?

2007-07-12 18:27:43 · 10 answers · asked by ? 1 in Astronomy & Space

If sin θ = y/r, cos θ = x/r, tan θ = y/x, then: arcsin y/r = θ, arccos θ = x/r, arctan θ = y/x and the same holds true for the rest of the trig functions? Say csc θ = r/y, then arccsc r/y = θ??

2007-07-12 18:26:19 · 3 answers · asked by Jorm 3 in Mathematics

my friend told me that when i jump from a building and falling down is called free fall. but i learned that free fall is falling without air resistance. when i am falling down there is air resistance.
can anyone explain better about free fall to me?

2007-07-12 18:22:07 · 6 answers · asked by Anonymous in Physics

People have said multiple things. Everyone always says, "science can prove it, read a science book and learn something."

So I read my science book and read, "Every action has an equal or opposite reaction."

I learned something. I learned science still hasn't proved anything yet.

2007-07-12 18:21:24 · 13 answers · asked by spinelli 4 in Astronomy & Space

2007-07-12 18:18:35 · 7 answers · asked by SoCalSoldier 1 in Chemistry

In cats, one autosomal gene controls fur length with short fur (S) being dominant to long fur (s). A second autosomal gene unlinked to the first controls the density of colour and has alleles black (D) and grey (d).

a) is either of these genes located on one of the sex chromosomes?

2007-07-12 18:17:52 · 6 answers · asked by lilangelsarah23 1 in Biology

2007-07-12 18:16:38 · 1 answers · asked by Goutom B 1 in Physics

Does anybody know what's happened to the newscientist.com website? It's been down for hours.

2007-07-12 18:15:08 · 1 answers · asked by holovisiontv 1 in Other - Science

there is a reservoir 3 meter high full of water with continuous supply. said reservoir was tap with 3 inches diameter continuous pipe up to 4 kms, then extended it by 4 inches diameter pipe up to 20 kms. the initial discharge was 32gpm. the pressure read at 4km was 150 psi at elevation 50 meters and the pressure at 20kms is 215 psi. the difference in elevation is 168 meters. Is it possible to produce higher quantity of water at the end of 20 kms?

2007-07-12 18:14:19 · 2 answers · asked by mark 1 in Engineering

The perimeter of a rectangular field is P feet. The width of the field is 200 feet less than its width. In terms of P, what is the length of the field in feet?

Please include the steps towards getting the answer. Thanks!

2007-07-12 18:08:07 · 11 answers · asked by Karina C. 2 in Mathematics

but how big is a metropolitian area? like a city? or a small town? or some place you blink and it's gone...

2007-07-12 18:05:28 · 4 answers · asked by heavenly_rain_angel 2 in Other - Science

To all that is provable, there is no proof that explosions or big bangs bring about order. Show me a big bang or explosion that brings forth order then I will believe it. And I mean bigger than popcorn. Popcorn is not big or a bang. and even if it was each piece is totally different. No order. There has never been an observable bang that brought order. If so where and when, and don't say the universe because from what I can see bulllshhitt. I am not advocating anything but this is really lame and has never been demonstrated in the most natural way. EXPLOSIONS DESTROY AND CREATE CHAOS. Prove that they don't please. And if it gets to wordy then you always know it is B.S. Like a pushy saleman. It should be real simple like the majority of all people.

2007-07-12 18:03:45 · 23 answers · asked by Anonymous in Astronomy & Space

2007-07-12 18:02:37 · 5 answers · asked by box792020 1 in Biology

Is mace a workable deterrent to a black bear in the wild, or will it just piss it off?

2007-07-12 17:57:40 · 4 answers · asked by Anonymous in Biology

I always have a hard time foiling cubed functions:
For example (2+h)^3

Can anyone show me a process on how to do these kind of problems.

2007-07-12 17:54:59 · 6 answers · asked by Willie M 1 in Mathematics

Factor. 3a2(a – b) – 6a(a – b) + 21(a – b)

A) 3(a – b)(a2 – 2a + 7)
B) (3a – b)(a2 – 2a + 7)
C) (a – b)(3a2 – 6a + 21)
D) 3(a – b)(a2 – 6a + 21)

Choose correct answer

2007-07-12 17:54:59 · 6 answers · asked by Somebody 2 in Mathematics

solve for the letter z

2007-07-12 17:54:37 · 7 answers · asked by breezy_0602 1 in Mathematics

Can anyone help me solve this for the value of x plz?


(x + 1)^2 (x – 2) + (x + 1) (x – 2)^2 = 0

2007-07-12 17:51:02 · 6 answers · asked by Anonymous in Mathematics

if working alon, Phil can complete a job in R hours and henry can complete the same job in S hours, how many hours would it take them to complete the job TOGETHER?
solution:
H/R + H/S= 1 okay, so why the equals to 1? why 1?
answer: H= RS/S+R

2007-07-12 17:49:48 · 3 answers · asked by soccerjock 2 in Mathematics

2007-07-12 17:47:57 · 3 answers · asked by outofsorts2 2 in Earth Sciences & Geology

everything about astrophysics and related disciplines talk about rocks and explosions and fire and matter shifting from e to m etc. gas and rocks at various stages of convergence or whatever. the magnetism and convergence and the heating and cooling of rocks. but all that has to fit in the box of space. they say there iss no edges to space and no center -- by abstruse arguable and mathematics based on the suppositions of "great thinkers" like hawkins and einstein, not to mention planck, maxell eetc. etc. Never have i heard one of the profs i sat in and monitor back i college or watching nova shows are talking to anyone ever talk to me about the space. endless (?) black space. infinite space. if you cannot measure it, how can you prove it is infinite. a tadpole in lake michigan may think the lake is infinite. it is not. i cannot think of anything but math theory that describes things as infinite. it is like in "planet of the apes." futile speculaton and verboten.

2007-07-12 17:45:53 · 8 answers · asked by Anonymous in Astronomy & Space

NaOH + (NH4)2SO4 -> NaSO4 + NH3 + H2O

Plz and ty =D

2007-07-12 17:40:27 · 4 answers · asked by Anonymous in Chemistry

State which method should be applied as the first step for factoring the polynomial.
2a2 + 9a + 10

A) Use the ac method (or trial and error).
B) Find the GCF.
C) Group the terms.
D) Factor the difference of squares.

2007-07-12 17:39:36 · 4 answers · asked by Somebody 2 in Mathematics

2007-07-12 17:38:16 · 5 answers · asked by anna118@sbcglobal.net 1 in Medicine