Science & Mathematics - 22 June 2006

This question was on my test and the answer was 3,272,500.

A tank is in the shape of a right circular cone of altitude 25 feet and base radius 20 feet with its vertex at the ground. (Think of an ice cream cone with its point facing down.) The tank is externally braced to prevent its falling over. If the tank is full of a fluid which weighs 50 pounds per cubic foot, find the work done, in foot pounds, correct to the nearest hundred footpounds, in pumping all of the fluid out of the top of the tank.

I know that the Volume of a cone= 1/3(pie)r^2h
I tried working the problem in the same manner as the spherical cylinder in the book except I used 1/3(pie) as opposed to just pie. I think the problem is my calculations of the radius being incorrect. The definite integral I came up with was

25
Int (1/3)(50)(pie)x(40-x)^2
0
as my r^2 of the ith interval was (40ci -ci^2)

Again help is greatly appreciated.

2006-06-22 06:28:33 · 3 answers · asked by Anonymous in Mathematics

the question is under advanced electricity and magnetism

2006-06-22 06:28:21 · 2 answers · asked by Anonymous in Physics

2006-06-22 06:25:45 · 5 answers · asked by pssarkar_1996 1 in Zoology

2006-06-22 06:24:54 · 17 answers · asked by Amie M 1 in Mathematics

H and F, Na and Cl, Fr and F, or F and F?????

2006-06-22 06:24:35 · 6 answers · asked by mrkittypong 5 in Chemistry

Some of the early high efficiency ones had 2, and the old wind chargers had many, but what is it about 3 that makes it the modern choice?

2006-06-22 06:23:46 · 13 answers · asked by campbelp2002 7 in Engineering

The way I understand it, a cloud is a high concentration of vapor. I mean, it seems to me like the water vapor(or particles, whatever) would have to be spread throughout the sky evenly. What keeps them in little areas to form clouds? And for that matter, what are the minimum requirements for clouds to form? Does it depend on humidity? Temperature? Why can it be 99% humidity and cloud-free? Man, I really wonder about clouds. This is a follow-up question from my last question, also about clouds.

2006-06-22 06:23:06 · 1 answers · asked by Brianman3 3 in Weather

2006-06-22 06:22:18 · 9 answers · asked by rtschmidt1@verizon.net 1 in Astronomy & Space

2006-06-22 06:22:09 · 20 answers · asked by dgman 2 in Zoology

This plant is in the office I work in and we were trying to figure out what it was....does anyone know? The leaves are broad and are really dark green with a lighter green in the middle and it is about 3.5 feet tall. The picture i have set as my picture for my profile is a picture of the leaves.

2006-06-22 06:20:45 · 10 answers · asked by fireluver33 1 in Botany

2006-06-22 06:18:57 · 12 answers · asked by Anonymous in Geography

2006-06-22 06:17:39 · 5 answers · asked by Kenneth Koh 5 in Mathematics

2006-06-22 06:16:04 · 6 answers · asked by Fishy 1 in Other - Science

Prove the following:
area of a circle = Pi*r^2, please dont prove it with the integration proof.

2006-06-22 06:10:50 · 8 answers · asked by koolbvr 2 in Mathematics

2006-06-22 06:10:40 · 29 answers · asked by beesugar24 2 in Physics

2006-06-22 06:09:48 · 14 answers · asked by apna_bachhu 1 in Earth Sciences & Geology

i dont mean, directly on fire, but ive heard of a place where the sky makes itself look like its on fire, where night time only lasts about an hour at the most. where is it? and at what time of the year?

if you have any other refferences similar to this, tell me please!

2006-06-22 06:06:08 · 3 answers · asked by sueet2b 4 in Weather

2006-06-22 06:03:03 · 11 answers · asked by thomas m 1 in Mathematics

2006-06-22 06:02:23 · 4 answers · asked by badboy_swt 1 in Biology

2006-06-22 06:01:48 · 25 answers · asked by sueet2b 4 in Weather

2006-06-22 06:00:44 · 8 answers · asked by mookie1510 3 in Geography

2006-06-22 05:58:12 · 18 answers · asked by Kenneth Koh 5 in Biology

Thinking about becoming a nurse? Would you recommend they work as a CNA or volunteer in a hospital?
I have an interest in nursing, but not 100 percent sure I want to jump into school right now.

2006-06-22 05:58:09 · 5 answers · asked by Anonymous in Medicine

+/- ions, + ions and bonding pairs of electrons, - ions and + nuclei, or + nuclei and bonding pairs of electrons?

2006-06-22 05:56:30 · 3 answers · asked by mrkittypong 5 in Chemistry

2006-06-22 05:55:57 · 28 answers · asked by beesugar24 2 in Other - Science

I have read several articles and other things that talk about the past, present, and future in terms of years. If the vast majority of scientists don't believe that God created the universe why would they believe in Jesus?

If BC means before christ and AD means after death why use them if their beliefs lead elseware? I understand that these acronyms have been used for a long time. With that being said it would be hard to change the worlds view on this.

So who first thought of using BC/AD as a way to define years? Could this person have been religious and among the community it took hold? I am religious and so I am just curious.

Why wouldn't time just begin and continue. It starts and then it stops on a year, and from then on is called AD. So After death, Wow! Someone must have been important to consider all years from the point of his death to AD. The points before that are also noticed as the came before he did.

Anyone want to expand or speak your peace?

2006-06-22 05:42:53 · 17 answers · asked by WDubsW 5 in Other - Science

2006-06-22 05:41:48 · 57 answers · asked by tan l 1 in Astronomy & Space

Some people say that us humans evolved from monkeys and others say that it was best described in the Bible. If that is possible then where did the dinosaurs come into the picture?

2006-06-22 05:41:17 · 12 answers · asked by chocolateheaven84 2 in Astronomy & Space

2006-06-22 05:40:27 · 4 answers · asked by shawn_fraze 1 in Other - Science

a boy saw a girl on house window at angle of elevation 60 degree in front of boy there was a path straight lead to house main door .the girl window is 60m above the ground so tell how long is the path which straight lead to main gate . P.S.who tells first i will give 10 points.....but tell,,,,,am waiting.....

2006-06-22 05:36:49 · 10 answers · asked by fun2sh 2 in Mathematics