Science & Mathematics - 12 February 2007

this is integration by parts. My main problem is finding the anti-derivative of (1/5)x^4....

so confused, if you can help, please explain or show your work.

Thanks!

2007-02-12 17:35:00 · 6 answers · asked by Anonymous in Mathematics

ok, im really having a hard time when it comes to word problems. can someone show me how its done. thank you!

1. A pay phone is holding its maximum number of 500 coins consisting of nickels, dimes, and quarters. the number of quarters is twice the number of dimes. if the value of all the coins is $88.00, hom many nickels were in the pay phone?

2. Florian Rousseau, from Italy, won a gold medal in cycling during the 1996 Summer Olympics. Supose he rides a ci-cycle up a mountain trail at 8 miles per hour and down at same trail at 12 mph. Find the round-trip distance traveled if the total travel time was 5 hours.

2007-02-12 17:30:51 · 7 answers · asked by onsight 2 in Mathematics

0.2000kg,80g, and 524mg

2007-02-12 17:29:08 · 4 answers · asked by Abel G 1 in Chemistry

How difficult is a 12 inch dobsonian 50 lb. tube to carry down the stairs?

2007-02-12 17:28:07 · 4 answers · asked by Stewart 2 in Astronomy & Space

I'm just asking this question for fun. It is evident that a host of people will be able to answer it, so really my goal is to see how many people would respond to this simple calculus problem.

2007-02-12 17:25:53 · 4 answers · asked by strangerinparadise 1 in Mathematics

what does it do?
who invented it?
has it got to do something with spinning?


thank you

2007-02-12 17:25:36 · 3 answers · asked by Deranged Soul.. 2 in Physics

2007-02-12 17:25:07 · 2 answers · asked by JJ 2 in Earth Sciences & Geology

Hi, I need a little help with this problem...

Two circles α and β meet at P and Q. PS and PT are diameters of the circles. Show that S, Q and T are collinear.

2007-02-12 17:23:36 · 5 answers · asked by yogastar02 2 in Mathematics

s=5,6,7,8,9,10
t= 2,3,?,?,?,? (this is meant to be in a table)
*s= no. of sides and t=no. of triangles

2007-02-12 17:21:20 · 1 answers · asked by peekabooh 2 in Mathematics

We probably all have bones in our noses but I was wondering why some noses protrude and others cave in and all of that

2007-02-12 17:20:48 · 3 answers · asked by ReelTru 4 in Biology

for the effects of the colored flame? or was the anion NO3 responsible? Basically, my question is, which of these two, metal cation or anion was responsible for the colored flame in the process of burning this compound of Ba(NO3)2?

2007-02-12 17:18:08 · 3 answers · asked by Heell yeaah! 3 in Chemistry

Hey!

Today, in my ninth grade Lab assignment, we were asked to experiment and discover how to seperate different materials from one another.

My partner and I eventually sperated all of them (even sawdust and sand) but my teacher said that there was a better way to separate them.

If you know a better way to seperate sawdust and sand, I'd appreciate help.

Thank You! =^o^=

2007-02-12 17:16:29 · 8 answers · asked by Ruebelle 1 in Other - Science

like the kind that interfears with tvs,radios,lightbulbs,computers.

2007-02-12 17:14:29 · 4 answers · asked by altpro9 2 in Biology

If a certain source emits radiation of wavelength 320. nm what is the energy, in kJ, of one mole of photons of this radiation?

Enter a numeric answer only.

2007-02-12 17:13:05 · 3 answers · asked by Anonymous in Mathematics

I have this feather, its approximatly 4 1/2 inches long and 3/4 inch wide. the tip is a light greyish white, then a dark grey then another shade of medium grey.

I have a picture of it, I really need to know what this is. please help!!!
thank you.

http://i170.photobucket.com/albums/u264/dianak6581/feather002.jpg

2007-02-12 17:12:46 · 9 answers · asked by dianek 2 in Zoology

2007-02-12 17:12:44 · 1 answers · asked by tmmmme 1 in Engineering

as in meandering channel, dendritic drainage, radial drainage, anastomsosing, distributory channel??

2007-02-12 17:12:20 · 1 answers · asked by fat_penguin17 1 in Earth Sciences & Geology

9. A truck is moving toward you at a speed v. Instead of moving out of the way, you decide to throw a tennis ball
at it. The ball has mass m and speed v0. After it hits the front of the truck and bounces (elastically), how fast
is the tennis ball moving with respect to the ground ?
(A) ½v0 – v½ (B) v0 + v (C) v0 (D) v0 + 2v

2007-02-12 17:10:51 · 2 answers · asked by mathiphy 2 in Physics

[4x^2/3x^3]^1/3

2007-02-12 17:10:38 · 2 answers · asked by musical_fish1 1 in Mathematics

Consider an acetate buffering system consisting of acetic acid and sodium acetate where the total acetate concentration is 0.50M. What is the concentration of acetate ion (Ac-) in such a buffer at the pKa of acetic acid, ~4.75?

2007-02-12 17:10:29 · 1 answers · asked by dem boyz 2 in Chemistry

if u know how to do this plz give examples
A. 5 - 2√6
B. 5 - √6
C. 1 - 2√6
D. 1 - √2
E. 1

2007-02-12 17:08:59 · 9 answers · asked by Anonymous in Mathematics

Find sets when possible satsfying each of the following conditions:

a. # of elements in A plus # of elements in B is greater than # of elements in A U B. ***U represents Union

b. # of elements in I plus # of elements in J is less than # of elements in I U J.

c. # of elements in E plus # of elements in F equals # of elements in E U F.

d. # of elements in G plus number of elements in K equals number of elements in G (upside down U sign respresenting Intersection) K.

HELP!!

2007-02-12 17:08:14 · 3 answers · asked by Anonymous in Mathematics

note: this pint is called the centroid of the triangle

2007-02-12 17:04:39 · 2 answers · asked by MatheMathe 2 in Mathematics

then y is the dropped stone come down to earth in straight line rather than in circular orbit

2007-02-12 17:03:13 · 7 answers · asked by Anonymous in Astronomy & Space

According to general relativity by Einstein, the space - time is curved...then why planets are not revolving in circular orbits?...

2007-02-12 16:59:38 · 5 answers · asked by Anonymous in Astronomy & Space

please be specific.

2007-02-12 16:59:13 · 6 answers · asked by ferial 1 in Botany

meet the circle at P. prove that radius OP is perpendicular to BC

2007-02-12 16:58:19 · 1 answers · asked by MatheMathe 2 in Mathematics

if the first term of a finite geometric sequence is 0.9 and its ratio is 0.2, what is the sum of the first five terms?

2007-02-12 16:58:09 · 2 answers · asked by Anonymous in Mathematics

If the sun warms up the Earth and other planets, does that mean the universe is warm and not this cold place we imagine? Also how come we don't see pictures of the sun when people are on the moon and above the Earth? If its so big how come we dont see it in pictures?

2007-02-12 16:55:18 · 7 answers · asked by Anonymous in Astronomy & Space

I know all single bonds are sigma, and triple bonds are 1 sig, 1 pi.
What about double bonds? Just curious. Thanks.

2007-02-12 16:54:30 · 1 answers · asked by Myra G 5 in Chemistry