Science & Mathematics - 2 December 2007

An open box is to be made from a 3-foot by 5-foot rectangular piece of material by cutting euqal squares from each corner and turning up the sides. Find the volume of the largest box that can be made in this manner.

(a). 5.2ft³ (b). 4.1ft³ (c). 7.5ft³ (d). 3.3ft³

PS: can any1 show me how to do this problem step-by-step...thanks

2007-12-02 17:06:21 · 5 answers · asked by David N 1 in Mathematics

I need some help with my calculus homework. I'm trying to convert the power series x^(n+2) / 2^(n+1)(n+1) to its functional notation.

2007-12-02 17:05:15 · 2 answers · asked by aberrantgeek 3 in Mathematics

2007-12-02 17:04:23 · 2 answers · asked by meki_2001 1 in Mathematics

2007-12-02 17:04:08 · 12 answers · asked by Anonymous in Earth Sciences & Geology

2007-12-02 17:03:41 · 9 answers · asked by glamour girl 1 in Mathematics

thnx for answering

2007-12-02 17:02:41 · 2 answers · asked by Anonymous in Biology

thnx for anyone who answered

2007-12-02 17:02:00 · 2 answers · asked by Anonymous in Biology

how many grams of O2 are consumed as 100.0 L of CH4 are burned? the volumes of CH4 and O2 are measured at 25 degrees C and .925 atm. The molar mass of O2 is 32.00 g/mol

The balanced equation is:

CH4 + 2 O2 ---> CO2 +2 H2O

2007-12-02 17:00:54 · 3 answers · asked by Anonymous in Chemistry

science hw
lol
thnx for answering

2007-12-02 16:58:48 · 2 answers · asked by Anonymous in Biology

I have a all metal pot that i use to cook soups, noodles, and other things to eat on those days i don't go out. Well lately, I was boiling water with a all metal pot and neglected it, watching TV and forgetting about the bowl. Naturally, the water dried up, and the surface became completely black. I heard something about carcinogens from barbecuing with a metal rack and i was wondering now that my bowl's bottom is completely brown / black spots is it dangerous to cook and eat with it now? Or is it fine, just a side effect from the heat?

2007-12-02 16:55:39 · 2 answers · asked by Davis T 1 in Chemistry

science hw
thnx for answering

2007-12-02 16:55:10 · 5 answers · asked by Anonymous in Biology

rhetoric and logic tells me that dividing by 0 is like not dividing at all.
so x/0 = x.

I know they'd have to re write ALOT of math books (all of them, perhaps)

but I wonder where that would lead, we do have euclidian geometry.

maybe this could be Alexisian Division...
I called it first, yeah!!

2007-12-02 16:54:37 · 5 answers · asked by Anonymous in Mathematics

2007-12-02 16:52:58 · 4 answers · asked by karahnm 1 in Astronomy & Space

The sum of three numbers is 98. the ratio of the first to the second is 2/3, and the ratio of the second to the 3rd is 5/8. What is the second number?

2007-12-02 16:51:30 · 1 answers · asked by Anonymous in Mathematics

2007-12-02 16:51:28 · 2 answers · asked by karahnm 1 in Astronomy & Space

I have been taking Seroquel for about 8 months, and I gradually reduced the doses (under doctor's supervision) and finally successfully stop taking it. I did not cold-turkey it.

However, I would like to know, if there can be any withdrawl symptoms possible after quitting Seroquel.

After stopping the med, I have been experiencing insomnia and strong constipation.

I was wondering, if those problems have anything to do with Seroquel.

I tried to ask my doctor about this but he is gone for a week for out-of-country seminar.

What do you think?

Thanks

2007-12-02 16:51:11 · 8 answers · asked by davegesprek 1 in Medicine

I know that it's when nothings there, but does anyone have a scientific way of explaining it?

2007-12-02 16:50:28 · 6 answers · asked by Anonymous in Astronomy & Space

i know u need the the elements of fuel, o2(oxygen), and air to burn
i understand the fuel and the o2 helps fuel the fire i guess, but y air?

2007-12-02 16:49:15 · 5 answers · asked by just_kiddin_all_over_you 4 in Chemistry

I've always been in awe of these possible abilities. Could anyone cite any instances? If not, do you believe it can be performed?

-Alex

2007-12-02 16:47:43 · 14 answers · asked by Phoenix Black 2 in Parapsychology

Which of the following [concerning photoelectric effect] will increase the kinetic energy of an electron ejected from a metal surface?

1) Increasing the wavelength of the light striking the surface
2) Increasing the frequency of the light striking the surface
3) Increasing the number of photons of light striking the surface

^also please explain why

2007-12-02 16:46:24 · 3 answers · asked by whatsntomake 1 in Chemistry

Find the sum if Convergent:

∑ where n =1 to infinity (3/(n(n+3)) + 5/4^n)

The first it's 3 (I think) but I can't get the second geometric series right. What I do is:

5∑(1/4)^n, and then 5∑(1/4)(1/4)^n-1, so a = 5/4, r = 1/4, it's sum would be: s = a/1-r, but I get 5/3, when I add up that to the 1 from the other series I get 8/3.

The answer is:7/2 :( What am I doing wrong? Thanks!

2007-12-02 16:45:54 · 1 answers · asked by Jorm 3 in Mathematics

I was expecting to find a hunk of frozen tundra on the Northern pole of the planet, but I'm just seeing water...

Is there a reason for this?

2007-12-02 16:44:38 · 2 answers · asked by Anonymous in Earth Sciences & Geology

2007-12-02 16:43:52 · 5 answers · asked by kleague9921 1 in Mathematics

"Speciation may occur rapidly and is caused by a few genetic genes." this statement is best associated with

a. plyletic speciation
b. gradualism
c. punctuated equilibrium
d. allopatric speciation
e. polyploidy

2007-12-02 16:43:50 · 1 answers · asked by angelina 2 in Biology

but usually what tests do we use, does the comparison test works most of the time, what about the 2nd test..im realli confused b/t what tests...could u plz help me out? thanks!

2007-12-02 16:39:06 · 2 answers · asked by ruby 2 in Mathematics

A flywheel turns through 30 rev as it slows from an angular speed of 3.2 rad/s to a stop.
(a) Assuming a constant angular acceleration, find the time for it to come to rest.
in s
(b) What is its angular acceleration?
in rad/s2
(c) How much time is required for it to complete the first 15 of the 30 revolutions?
in s

2007-12-02 16:35:51 · 1 answers · asked by srl1143 1 in Physics

science hw

2007-12-02 16:33:57 · 14 answers · asked by Anonymous in Biology

I've tried reading about it on wikipedia and what not but simply can't understand the physics behind it all. Can someone answer(as much in layman's terms as possible) how scientists respond to this statement.

At some time early in the world, something was created from nothing.

2007-12-02 16:33:19 · 10 answers · asked by Anonymous in Physics

1. A baseball is hit at 30m/s at an agle of 53 degrees. Immediately, the centerfielder runs at a speed of 4m/s directyl towards home plate and catches the ball. How far was the outfielder from the batter when the ball was hit?
2. A famous motorcyclist plans to jump across a canyon that is .03km wide. To do this, the cyclist plans to jump off of a 30 degree ramp at a speed of 19.6m/s. Will he reach the other side?
WORK PLEASE

2007-12-02 16:32:45 · 1 answers · asked by Anonymous in Physics

God or The Big Bang???

2007-12-02 16:31:26 · 18 answers · asked by fmadante 1 in Earth Sciences & Geology