I wanna do a physical product testing. And this Lab give me aprofile for a vibration and sine sweep test. The frequency range is at 20 - 2000Hz. My question is, why at that frequency range why not at other range. What the difference between random vibration and sine sweep?

2006-09-10 18:54:18 · 3 answers · asked by maxorian 3 in Engineering

10 ⤊

What is in your mind if I mention "Kansas"?

2006-09-10 18:52:19 · 29 answers · asked by Anonymous in Geography

2 ⤊

what constitutes a failed experiment?

2006-09-10 18:51:53 · 5 answers · asked by Jennifer V 1 in Chemistry

0 ⤊

where i can get good info about "power former" new tech from ABB.?

2006-09-10 18:48:41 · 1 answers · asked by mahdi_sadegh 1 in Engineering

2 ⤊

is there a concept called time travel?

travel through time.. is it possible.. wats the best theory that explains this?

2006-09-10 18:46:17 · 13 answers · asked by jack 1 in Astronomy & Space

0 ⤊

circuit reqiured for simple project?

OBJECTIVE:
1)circiut to count number of black strips(on a white back ground)
# numbering can be in binary ie (range of 0-15) with 4 LEDs each reprsenting 0-1
2)circuit to give a signal (lighting of LED) if RED colour strips are countered (on a white back ground)

NOTE:
1)must differntiaite between red ,black,white.
2)lighting ,exact intensity of red is not known so the Answerer should explain the logic clearly so that adjustments might be possible.
3)exact specifications of electronics used will be added advantage
4)circuit diagram should be mailed to ramthegreatcv@yahoo.com
5)the answer if elaborate will be greatly appreciated since the user is a novice

2006-09-10 18:45:10 · 2 answers · asked by ramthegreat 3 in Engineering

0 ⤊

What are some differences between races other than visual?

2006-09-10 18:42:50 · 11 answers · asked by X 3 in Biology

0 ⤊

what is the line in the sky equally between the north and south poles?

Astronomy

2006-09-10 18:40:49 · 7 answers · asked by Sunnygirl 1 in Astronomy & Space

1 ⤊

The process that follows nuclear division and results in two daughter cells is called ?

The process that follows nuclear division and results in two daughter cells is called?

2006-09-10 18:40:10 · 11 answers · asked by Reese 2 in Biology

0 ⤊

How do insects survive even after falling even 100 times their body heights?

2006-09-10 18:37:17 · 16 answers · asked by BiCUBIC 2 in Biology

0 ⤊

Need help coming up with a proof for the following?

I need help writing proofs for the following using common Axioms etc.

1) If a < b and c < d, then a + c < b + d

2) If a2= b2 and a, b >= 0, then a = b

some Axioms given to me are:
AC - Commutativity of Addition
AA - Associativity of Addition
AID- Existence of Additive Identity
AIV- Existence of Additive Inverse
MC- Commutativity of Multiplication
MA- Associativity of Multiplication
MID- Existence of Multiplicative Identity
MIV- Existence of Multiplicative Inverse
D- Distributivity
OTC - Trichotomy
OTR - Transitivty
OA - Compatibility with Addition
OM - Compatibility with Multiplication

2006-09-10 18:36:09 · 5 answers · asked by swejedi7 1 in Mathematics

0 ⤊

State whether each equation is a linear equation (Yes or No)?

x + y = 4

x^2 = 9

7 = 2y

State Whether the following is a linear function (Thank U)

g(x) = 7

2006-09-10 18:35:38 · 6 answers · asked by No One! 2 in Mathematics

0 ⤊

how do you convert (rx) in spherical coordinates to cartesian coordinates?

2006-09-10 18:31:50 · 2 answers · asked by Sean H 2 in Mathematics

1 ⤊

how universe evaluated?

origin of universe....how it exactly generated

2006-09-10 18:31:42 · 5 answers · asked by janardansuvarna 1 in Astronomy & Space

6 ⤊

what does it take to become a great a mathematician?

I want to learn all the types of math and apply them to the real world.

2006-09-10 18:31:13 · 10 answers · asked by leonardo 1 in Mathematics

0 ⤊

What are some theroies as why viral infections are more prevalent during the winter season?

2006-09-10 18:27:42 · 5 answers · asked by Gail F 1 in Biology

0 ⤊

Why are new species more "intelligent" than previous species?

Dinasaurs, now Humans. Is this random that humans evolved to be so much smarter, or is there something else to this? If humans were to die out, would the next species on this planet (if there is one) be more "intelligent" than human beings?

2006-09-10 18:24:49 · 7 answers · asked by SS 3 in Other - Science

0 ⤊

math word problem?

from 1960-1990 the average annual US consumption of pork dropped according to the linear equation of y= -1/3x + 62 . the average annual cosumption of chicken rose according to the linear model y= 7/6x + 31. for which years did the US consumption of chicken exceed the consumption of pork?

2006-09-10 18:23:22 · 5 answers · asked by sonovabeeech 1 in Mathematics

1 ⤊

Do u think there is life on other planets?

2006-09-10 18:22:56 · 13 answers · asked by lee a 1 in Other - Science

0 ⤊

Red Moon, Red Sky?

I noticed the moon and sky was red tonight in Toronto, ON, Canada. Can anyone please explain to me whats happening? Some people believe unlucky events occur when this happens. Is that true?

2006-09-10 18:21:51 · 6 answers · asked by crad1985 2 in Astronomy & Space

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