Science & Mathematics - 17 November 2006

I having trouble in MaTH! so please help ME!

2006-11-17 11:10:24 · 14 answers · asked by Anonymous in Mathematics

Hmm i'm kinda stuck on some homework proofs and wonder if anyone can help me?

Using the applications of Extreme Value Theorem, Intermediate Value Theorem, Mean Value Theorem, & Rolle's Theorem detemine the following questions.

1) Suppose f, g are continuous on [a,b], f(a) < g(a), f(b) > g(b). Prove f(x) = g(x) for some x E (a,b)

2) Suppose f is continuous on [0,1], 0 ≤ f(x) ≤ 1 for x E [0,1]. Prove f(x) = x for some x E [0,1]

3) a) For f as in problem 2, prove f(x) = -x for some x E [0,1]

b) If g is continuous on [0,1], g(0) = 0, g(1) = 1. Prove f(x) = g(x) for some x E [0,1]

2006-11-17 11:10:16 · 2 answers · asked by Anonymous in Mathematics

All live life has cyrcle from birth to death. How death helps keeping life alive? What problem can happen if eliminate death? Should birth be eliminated also?

2006-11-17 11:04:48 · 30 answers · asked by Serpent G 2 in Biology

2006-11-17 11:04:08 · 6 answers · asked by an 1 in Mathematics

2006-11-17 11:02:05 · 2 answers · asked by an 1 in Mathematics

My Friend begs the differ, and i cant make him understand..HELP!

2006-11-17 10:54:04 · 17 answers · asked by cheetos 1 in Medicine

2006-11-17 10:53:46 · 7 answers · asked by Che Revis 1 in Engineering

what is the value of (x+1)^-2/3 if x=7

any help and explaining is really appreciated.

2006-11-17 10:50:08 · 8 answers · asked by BLUEEEE 1 in Mathematics

So, this is a physics question I'm having some serious trouble with, help would be appreciated. Here's the question in all its detail:

A vibrating 400Hz tuning fork is placed in pure distilled water.
a) What are the frequency and the wavelength (in metres) of the sound waves produced within the water at 0 degrees C?
b) What would be the frequency and the wavelength in the adjacent air, if the sounds waves moved from the water into the air at 0 degrees C?

That's the question, I got the second half already...I think, but I can't figure out a) at all.

The equations we have are :
frequency = cycles/time
Period = time/cycles
Speed = frequency x wavelength
Speed = distance/time
Speed of Sound in Air = (332+(0.6xTemperature))

I have the answers in my text if anyone could get anywhere backwards.

Any help would be much appreciated.

2006-11-17 10:47:54 · 3 answers · asked by SeriouslyNow 3 in Physics

2006-11-17 10:45:40 · 7 answers · asked by Anonymous in Geography

A ball is rolled off of a building that is 5m tall. Will the ball go over a wall that is 20m away and 2m tall? or will it hit the wall? Basically the question is how far from the ground will the ball be after traveling 20m.
V= 31.25 m/s

Show all work please.

2006-11-17 10:44:40 · 2 answers · asked by cloudykisses36 1 in Physics

2006-11-17 10:42:49 · 2 answers · asked by INDIAN 1 in Engineering

2006-11-17 10:42:47 · 10 answers · asked by somewherein72 4 in Astronomy & Space

2006-11-17 10:39:20 · 3 answers · asked by Diana K 1 in Other - Science

2006-11-17 10:38:45 · 6 answers · asked by MSI 1 in Mathematics

if u could pleez answer this question it wood be gr8ly appreciated

2006-11-17 10:36:53 · 12 answers · asked by dagrazzizgreen 1 in Mathematics

2006-11-17 10:36:22 · 1 answers · asked by L L 2 in Engineering

2006-11-17 10:30:48 · 2 answers · asked by Anonymous in Mathematics

Is it always best to convert from fraction notation to percent notation by the first finding decimal notaion? Why or why not?

2006-11-17 10:26:34 · 5 answers · asked by Anonymous in Mathematics

2006-11-17 10:26:22 · 5 answers · asked by Cali 1 in Mathematics

as I asked this before but put it in the wrong catergory. My Boss asked this as a serious question but I ended up putting it in the 'Riddle' category. So, here goes a thought provoking question.

Of all the Dry Stone Walls in Wales, if all the stones were laid down end to end, how far would they stretch?

2006-11-17 10:25:05 · 15 answers · asked by Anonymous in Geography

2006-11-17 10:22:22 · 5 answers · asked by ? 5 in Biology

Water ( density = 1000kg/m^3) falls without splashing at a rate of 0.111 L/s from a height of 24.2m into a 1.07 kg bucket on a scale. The accelaration of gravity is 9.8m/s^2.

If the bucket is originally empty, what does the scale read after 4.22 s? Answer in units of N.

2006-11-17 10:20:45 · 5 answers · asked by invu 1 in Physics

2006-11-17 10:19:04 · 37 answers · asked by KingQuestion! 1 in Zoology

2006-11-17 10:18:15 · 4 answers · asked by bekah_2009 2 in Biology

2006-11-17 10:16:55 · 2 answers · asked by bekah_2009 2 in Chemistry

A 655g ball strikes a wall at 14.9 m/s and rebounds at 13.4 m/s. The ball is in contact with the wall for 0.034 sec.
What is the magnitiude of the force acted on the ball during the collision? Answer in units of N.

2006-11-17 10:16:22 · 2 answers · asked by invu 1 in Physics

I am relatively certain I saw one as a child in the 70's long before I even heard their was such a thing. It was in a small community, not even a stop sign, round, silver with a dome on top a multiple flashing colored lights all around it in the field behind our house.

2006-11-17 10:15:39 · 16 answers · asked by father of 4 husband of 1 3 in Astronomy & Space

2006-11-17 10:13:46 · 6 answers · asked by Anonymous in Geography

2006-11-17 10:13:40 · 8 answers · asked by garou_yasha 2 in Chemistry