Science & Mathematics - 7 February 2007

2007-02-07 16:25:38 · 8 answers · asked by supabebe 1 in Chemistry

I just found this word somewhere and according to the word parts, I would guess that it has something with the study of space, and god. Am I right? Please explain. Thank you very much!

2007-02-07 16:24:44 · 2 answers · asked by Chip Par 1 in Astronomy & Space

The question is If 1000 kg of raw sugar reduces to 800 kg of raw sugar during the first 10 hours, how much raw sugar will remain after another 14 hours?

I am suppose to solve this problem using equation y= y(0) e^kt
Also, this is an exponential decay/growth problem not linear.

So far I got

y=1000e^kt
800 = 1000e^k(10)
e^k = 0.8
ln(e^k) = ln 0.8
k = ln 0.8

y = 1000e^(ln 0.8)(t)

please tell me if what I did so far is right.

2007-02-07 16:24:01 · 3 answers · asked by Anonymous in Mathematics

2007-02-07 16:21:28 · 1 answers · asked by Anonymous in Engineering

best answer will be chosen - GUARANTEE

2007-02-07 16:21:20 · 2 answers · asked by practico 1 in Biology

log (base 3) x = 2

My brain isn't working right now. Help would be appreciated.

2007-02-07 16:19:26 · 3 answers · asked by F 2 in Mathematics

Can someone explain to me how to do this? Thanks!!!!

2007-02-07 16:16:43 · 4 answers · asked by Anonymous in Chemistry

Also, I'm confused of what's different of a homologous chromosome and a sister chromatid/non-sister chromatid. I need to clear these things up b4 the test. Appreciate it. Thnks

2007-02-07 16:16:24 · 4 answers · asked by ruby 2 in Biology

11th grade chemistry question. Having trouble finding answer.

2007-02-07 16:14:51 · 3 answers · asked by lacybsmom 2 in Chemistry

I herad to never look at the sun during an eclipse. I heard this in "The shak" on NBN. How do you know when there is an eclipse so you dont look at the sun?

2007-02-07 16:14:27 · 6 answers · asked by Anonymous in Astronomy & Space

2007-02-07 16:14:02 · 6 answers · asked by Anonymous in Mathematics

integral {dx/(sqrt 8x-x^2)}

2007-02-07 16:13:26 · 2 answers · asked by itsSCIENCE 2 in Mathematics

A 134m tall Detroit dept. store building was destroyed by controlled implosion in 1998. Use the formula d=5t squared + vot to estimate how long it took for a piece that broke away from the troof to reach the ground

2007-02-07 16:12:20 · 2 answers · asked by jjcwacky j 1 in Mathematics

2007-02-07 16:11:50 · 2 answers · asked by Anonymous in Mathematics

hi, I need help finding the inverse of this problem:

f(x)=1-3x

I usually dont have trouble but what ever answer i get when I try to check it, it doesnt work. please help.

2007-02-07 16:11:47 · 4 answers · asked by roxyann 1 in Mathematics

Ok two parts to this one, the first part i think i understand what im supposed to do, but correct me if im wrong.

Im given two parametric equations

x= 3+t, y= 3-2t, z= 5t-1

x= 3k-4, y= 5-2k, z= k+6

do these lines intersect??
Im guessing that you find the direction vectors of each and make sure they are not parallel?

Then the real question, what point do they intersect?

2007-02-07 16:11:29 · 2 answers · asked by The Dude 3 in Mathematics

2007-02-07 16:11:15 · 5 answers · asked by Anonymous in Mathematics

i was told that there is a standing offer by some group (maybe like the New York Zoological Society) for $10,000 or maybe 100,000 for anyone that brings in an eastern diamondback rattlesnake over eight foot long. Is this true???

2007-02-07 16:09:28 · 7 answers · asked by Anonymous in Zoology

Any help would be much appreciated. There would be a $10 prize for the first person to get the right answer, I'll send the prize using paypal. Thanks in advance for any help!

2007-02-07 16:08:50 · 3 answers · asked by m80909711 1 in Mathematics

Specifically, 6.5 : 4. Thanks :)

2007-02-07 16:07:06 · 5 answers · asked by Anonymous in Mathematics

2007-02-07 16:06:21 · 4 answers · asked by shaan 1 in Engineering

2007-02-07 16:05:21 · 1 answers · asked by The One 1 in Chemistry

Can you tell me where you got this from? like the source? ! thanks =)

2007-02-07 16:02:21 · 2 answers · asked by hsu136 2 in Engineering

I have to complete this math problem that is extremely difficult and i cant seem to get it right the question is:

A Store with net sales of $3,500,000 has estimated its shrtage to be 2%. The actual shortage is $72,000.
A) Is the Shortage percentage higher or lower than what was estimated?
B) What is the dollar difference between the estimated and the actual shortage?

HELP PLEASEEEE

2007-02-07 16:01:59 · 6 answers · asked by krissy t 2 in Mathematics

1. C6H12O6 (glucose)
2. C7H12 (heptine)
3. NaHCO3 (Sodium BiCarbonate)
4. KNH4SO2

2007-02-07 16:01:45 · 3 answers · asked by m C 1 in Chemistry

is there a term for this?

2007-02-07 16:01:06 · 3 answers · asked by Anonymous in Physics

websites or personal info
the element is Carbon

2007-02-07 16:00:42 · 3 answers · asked by sonic_brain3 2 in Chemistry

2007-02-07 16:00:07 · 4 answers · asked by crombieqtpy15 3 in Mathematics

2007-02-07 15:59:51 · 13 answers · asked by Anonymous in Astronomy & Space

2007-02-07 15:57:57 · 6 answers · asked by harry_000 1 in Biology