Science & Mathematics - 4 February 2007

CaBr
Ca2Br
KBr
KBr2
CaBr2

2007-02-04 15:35:01 · 7 answers · asked by Heavy Metal 3 in Chemistry

2007-02-04 15:32:51 · 3 answers · asked by patsrule 2 in Zoology

Choose an answer based on the truth or falsity of each of the following statements.


A. A pie graph uses vertical or horizontal bars to represent the frequencies of a distribution.

B. The lower class limit represents the largest data values that can be included in that class.




a. Only statement A is true

b. Only statement B is true

c. Both are true

d. Both are false

2007-02-04 15:32:22 · 2 answers · asked by Olivia 4 in Mathematics

Hi,

I need help solving (1+x^2)y``+2xy`=0 by substitution for the initial conditions y(0)=0 and y`(0) = 2.

I don't know that the problem statement means by substitution. Any ideas?

2007-02-04 15:32:17 · 1 answers · asked by abe_cooldude 1 in Mathematics

Choose an answer based on the truth or falsity of each of the following statements.
A. A histogram can only be used to display data about blood samples.
B. To find a class width, subtract the lower boundary from the lower boundary of the next class.

a. Only statement A is true

b. Only statement B is true

c. Both are true

d. Both are false

2007-02-04 15:31:36 · 5 answers · asked by Olivia 4 in Mathematics

in mmol\L if posibal

2007-02-04 15:30:03 · 1 answers · asked by Anonymous in Biology

2007-02-04 15:30:01 · 3 answers · asked by titicaca_emily 1 in Geography

Pliz help!! =]

2007-02-04 15:27:15 · 3 answers · asked by Anonymous in Physics

In the midwestern states, what is the temperature that defines whether school is in session or not? The weather channel says that in my area it will be 1 degree farenheit with a -30 degree windchill. I would prefer more accurate answers rather than guesses. Thank you to all!

2007-02-04 15:27:08 · 6 answers · asked by Anonymous in Weather

calcium chloride + sodium hydrogen carbonate --> sodium chloride + calcium hydroxide + carbonic acid

thanks in advance, and best answer to first correct answer!!

2007-02-04 15:26:30 · 2 answers · asked by SUnny S 1 in Chemistry

Take the mass of the Earth to be 5.98 * 10^24 kg. If the Earth's gravitational force causes a falling 63 kg student to accelerate downward at 9.8m/s^2, determine the upward acceleration of the Earth during the student's fall.

2007-02-04 15:25:32 · 6 answers · asked by krstilyzed 1 in Physics

The length of a rectangle is 3cm more than 2 times its width. If the area of the rectangle is 99cm^2, what are the dimensions of the rectangle to the nearest thousandth???

Is it set up like this .....

L = 3 + 2w

I am lost on what to do after that !

2007-02-04 15:23:04 · 4 answers · asked by CookFrNW 3 in Mathematics

Given the polynomial function h(x)=f(x) times g(x) and
h(2t^3)= 64t^12 - 24t^9 + 104t^6 - 36t^3 + 12.

find g(x) if f(x)=4x^2-3x+2.

Much appreciation.

2007-02-04 15:22:46 · 1 answers · asked by lala 1 in Mathematics

Help with this?

http://www.geocities.com/jsprplc2006/Picture1.png

2007-02-04 15:22:07 · 4 answers · asked by jsprplc2006 4 in Mathematics

2007-02-04 15:22:01 · 5 answers · asked by Eliana 1 in Mathematics

I have to solve to following problem for X , but I am lost...

5(x-2)^2 = 3

Also this problem has me scratching my head ....

I have to solve this problem by either "completing the square" or using the "quadratic formula" Help !!!

x^2 = 5x +2

Do I set it up as x^2 -5x -2 = 0 and where do I go from there???

2007-02-04 15:20:30 · 5 answers · asked by CookFrNW 3 in Mathematics

people say xena,charon,cheres.
but in paper it's pluto-charon
but pluto planet is reduced in our solar system

2007-02-04 15:20:29 · 8 answers · asked by Anonymous in Astronomy & Space

2007-02-04 15:16:45 · 1 answers · asked by Olivia 4 in Mathematics

Is there a Fiber Optic Modem or Phone Protection device that has 5" of fiber optics between two PC boards with either screw terminals or RJ11 input or out put that eliminates ground Voltage differentials up to 75,000 volts? Something small, compact and not more then $400.00. If so, what is the web page?

2007-02-04 15:14:17 · 2 answers · asked by John P 2 in Engineering

I need help with these quadratic equations...

3x^2 = 11x + 4

and


x^2 + 12x + 32 = 0


PLEASE HELP I AM LOST :)

2007-02-04 15:13:29 · 7 answers · asked by CookFrNW 3 in Mathematics

Forgive me if I misunderstand, but from what I have heard about Schrodinger's Cat, it is an analogy for how observation effects the outcome of an experiment. However, I still don't know if the example of a cat being both alive and dead effectively describes this. How can something that concerns things on an atomic (and subatomic?) level be compared to matters concerning an extremely complex, multicellular living thing?

Does anyone else have an opinion on this issue? Do you think the analogy works? If so, how/why?

Again, please forgive me if I misunderstand the experiment. I freely admit (though it's probably obvious) that I am not a physicist and probably need more knowledge in this area to completely understand it, but that's exactly why I'm asking about it.

Thanks.

2007-02-04 15:12:22 · 10 answers · asked by Anonymous in Physics

2007-02-04 15:12:08 · 2 answers · asked by mjalw53g 1 in Chemistry

EARTHQUAKE!!!!! i heard that British Columbia, Canada will be having an earthquake and i would like to know more info. Can u tell me more or send me a site about the earthquake in birtish columbia?? THanks. Also so far i heard Thursday Feburary 8th, 2007, we might be having the EARTHQUAKE and if we dont we'll have it next year and it'll be really dangerous, more dangerous than this year! Thankz

2007-02-04 15:09:51 · 6 answers · asked by Tiffy 1 in Earth Sciences & Geology

2007-02-04 15:09:16 · 16 answers · asked by Anonymous in Zoology

2007-02-04 15:06:39 · 1 answers · asked by chris 2 in Mathematics

combine like terms in decimals, for example:
Simplify by combining like terms.

14.2z + 11.9 - 9.6z - 15.2

2007-02-04 15:06:04 · 7 answers · asked by Anonymous in Mathematics

I've always wondered why the amount of bullets the main hero can take before dying differs so much, so how many bullets do you think a fit ,am at the prime of his life take? Also how much difference does it really make where it hits?

2007-02-04 15:04:00 · 7 answers · asked by Mr. Jack Dulligan 2 in Physics

I've had it since 16 ( I'm 18 now) and I can't think of a name! Any ideas?

2007-02-04 15:02:04 · 5 answers · asked by Anonymous in Mathematics

Did anyone experience hurricane Katrina??? Or had u gotten hit by a tornado??? what was it like?? DETAILS!! I'm studying weather, and I was hoping u could tell me your stories about YOUR past. Thank u!

2007-02-04 15:01:14 · 4 answers · asked by rzeznik_101 1 in Weather

When copper II chloride reacts with aluminum to make copper and aluminum chloride, it turns into little bubbles. How do you recover it? Can you do it by condensation? I'm stuck!

2007-02-04 15:00:54 · 3 answers · asked by Anonymous in Chemistry