Science & Mathematics - 12 September 2006

2006-09-12 05:15:12 · 10 answers · asked by mAuReEn 1 in Biology

what is 12 percent of 150?

2006-09-12 05:14:05 · 38 answers · asked by Anonymous in Mathematics

magnitude? Support your answer.

2006-09-12 05:09:09 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2006-09-12 05:07:24 · 12 answers · asked by mary!!! 1 in Biology

five odd positive digits that equals 20.
what are they?
tricky huh ;)?

2006-09-12 05:04:58 · 14 answers · asked by tinyt00fy 1 in Mathematics

2006-09-12 04:58:57 · 10 answers · asked by Anonymous in Biology

Was wondering about the problem of finding multiple solutions to one equation, but for large number of input variables/coefficients. (This is your basic spreadsheet math; same equation might be applied to each row of a spreadsheet, to yield different results for each row.)

In other words, say I have a number of inputs in a matrix, call them V11..V1n through Vm1..Vmn, and applying the (same) equation to each row gives solutions S1..Sm. The equation to apply to the values in the columns can be any mathematical formula, it doesn't matter.

Col1 Col2 .. Coln Solution
---- ---- ---- -----------
Row1: V11 V12 .. V1n S1
Row2: V21 V22 .. V2n S2
.. ..
Rowm: Vm1 Vm2 .. Vmn Sm
-----------
Total: Sum(S1..Sm)

Is there a field of study for this kind of thing? Is brute force the only way?

2006-09-12 04:56:20 · 4 answers · asked by crsssl 1 in Mathematics

i need help on this math problem. I don't know why x^2+y^2=9 isn't a function.

2006-09-12 04:55:28 · 12 answers · asked by comakazi l 2 in Mathematics

A NaCl solution with a 266 mOsm will diffuse across into a Glucose solution with a 200 mOsm?

2006-09-12 04:55:23 · 3 answers · asked by Anonymous in Chemistry

A cast iron rod has a mass of 240g. Its cross sectional area is 10cm squared and its density is 7.5g/cmcubed. caluclate the volume (which i have done) and the length which im stuck on!!!

2006-09-12 04:52:17 · 21 answers · asked by Tina H 1 in Mathematics

This is an unquestionable reality, proven several times. Try it.

2006-09-12 04:52:07 · 11 answers · asked by roshpi 3 in Physics

2006-09-12 04:51:26 · 12 answers · asked by striker 1 in Zoology

Does the EVP helps to prove a ghost's existence?

2006-09-12 04:51:21 · 11 answers · asked by jason 2 in Other - Science

2006-09-12 04:47:21 · 13 answers · asked by ramanquickdogisjumpingoverlazyfo 1 in Physics

What changes will be required to the ocean wave set up?

2006-09-12 04:45:58 · 4 answers · asked by Stanislaus M 1 in Engineering

plz plz plz tell me and help and is that books difficelt or easy or what . heeeeeeeeeeeeeelp

2006-09-12 04:44:23 · 5 answers · asked by the knight 1 in Mathematics

Can someone list me all the prime numbers lol ? I'm stuck with my maths homework.!

2006-09-12 04:40:22 · 27 answers · asked by Anonymous in Mathematics

Puzzle

Many shops have prices set just under a round figure, e.g. $9.99 instead of $10.00 or $99.95 instead of $100.00 . It is assumed that this is done because the price seems lower to the consumer. But this is not the reason the practice started. What was the original reason for this pricing method?

2006-09-12 04:39:29 · 5 answers · asked by anniesj 1 in Mathematics

2006-09-12 04:34:48 · 3 answers · asked by Anonymous in Engineering

clue is :it is 555 timer related.do provide precise answers,circuit diagram or related websites or online sources.

2006-09-12 04:33:36 · 2 answers · asked by Anonymous in Engineering

why do people travel to outer space?

2006-09-12 04:32:37 · 14 answers · asked by ☺☻ 2 in Astronomy & Space

2006-09-12 04:32:35 · 9 answers · asked by md sabrie 1 in Astronomy & Space

2006-09-12 04:32:13 · 15 answers · asked by barefordi 2 in Physics

school homework project about bridges

2006-09-12 04:26:41 · 5 answers · asked by sarah s 1 in Engineering

2006-09-12 04:26:14 · 19 answers · asked by Anonymous in Botany

2006-09-12 04:23:37 · 13 answers · asked by shankru85 2 in Physics

Or is there no life out there?

2006-09-12 04:22:57 · 21 answers · asked by Jack Daniel's 1 in Astronomy & Space

2: A compound may be separated into its elements by
decomposition

evaporation

filtration

synthesis


3: An example of a chemical change is the
condensation of steam

corrosion of metals

dissolving of a substance in water

melting of ice


4: A substance composed of two or more elements chemically united is called
an allotrope

a compound

an isotope

a mixture


5: Air is a mixture because it
is colorless

is odorless

does not have a uniform composition

may be liquefied


6: A logical guess which is sometimes used to solve a scientific problem is called
the scientific method

a hypothesis

a theory

a law


7: An example of physical change is
burning

decaying

melting

rusting


8: The state of matter, commonly found on earth, in which the characteristic molecules move at the highest speed is
solid

liquid

gas

plasma


9: A substance which can be further simplified may be either
an element or compound

an element or a mixture

a mixture or a compound

none of the above


10: In the ________ state a substance has a definite shape and a definite volume.
liquid

gas

solid

none of the above


11: The amount of mass per unit volume refers to the
density

specific gravity

odor

state of a substance


12: A substance which cannot be further simplified or decomposed by ordinary chemical means is
a mixture

a compound

an element

a molecule


13: The smallest possible unit of a chemical compound that retains the properties of the entire compound is
a proton

an electron

an atom

a molecule


14: In the ________ state, a substance has neither a definite shape nor a definite volume
solid

liquid

gas

none of the above


15: A substance which results from the union of two or more substances in no definite proportion by weight is a(n)
element

compound

mixture

conglomerate


16: Milk is an example of a(n)
element

compound

mixture

conglomerate


17: A sample of calcium carbonate obtained in Kentucky contains 48% oxygen, 40% calcium and 12% carbon. A sample of calcium carbonate from Illinois would have the same proportion of elements. This is an example of the law of
Conservation of Matter

Definite Proportions

Multiple Proportions

Conservation of Energy


18: In the compounds carbon dioxide(CO2) and carbon monoxide (CO), the amounts of oxygen combined with the same amount of carbon are in the ration of 1:2. This illustrates the law of
Conservation of Matter

Definite Proportions

Multiple Proportions

Conservation of Energy


19: The amount of space a substance occupies is called its
density

volume

state

physical property


20: The property which compares the density of a substance with that of water is known as its
volume

specific gravity

shape

weight

2006-09-12 04:22:14 · 6 answers · asked by Anonymous in Chemistry

2006-09-12 04:19:43 · 14 answers · asked by ankit m 1 in Mathematics

2006-09-12 04:18:46 · 10 answers · asked by drmrana 1 in Medicine