Science & Mathematics - 16 January 2007

2007-01-16 09:18:17 · 9 answers · asked by Casey D 1 in Chemistry

2007-01-16 09:17:55 · 17 answers · asked by Anonymous in Geography

Can someone tel me which uses more power a light bulb or a neon tube of the same wattage.
The reason I ask is,the cooker lamp is a 40 watt bulb and the ceiling light neon lamp is a single tube ??

2007-01-16 09:16:08 · 3 answers · asked by novicerover 1 in Engineering

how do you keep a ping pong ball in mid air,i know the answer do you.

2007-01-16 09:15:09 · 6 answers · asked by tugboat 4 in Other - Science

Do any of you know how hot a volcano can get? I mean the lava, because once my third grade teacher said that if you dropped something into a volcano it would decinigrate before it reached the magma. Just wondering if that was true! Thanks in advance!!!

2007-01-16 09:14:15 · 3 answers · asked by bbalhotshot 2 in Earth Sciences & Geology

simple answer plz im only in grade 8

2007-01-16 09:13:37 · 21 answers · asked by Anonymous in Astronomy & Space

2007-01-16 09:12:59 · 3 answers · asked by phyllove p 1 in Mathematics

the thousands digit of a 4 digit numberis 4 greater that the hundreds digit. the ten digit is 2 times the thousands digit and the ones digit is 1/2 the thousands digit...What is the number?

2007-01-16 09:11:24 · 14 answers · asked by Marsha D 2 in Mathematics

uh..............................yeah.....................someone help oh and what is the height of a triangle that has an area of 120 square centimeters and a base of 24 centimeters?

2007-01-16 09:11:21 · 4 answers · asked by Metalhead4Ever 2 in Mathematics

Will there be similar weather patterns or some changes?

2007-01-16 09:11:19 · 6 answers · asked by Anonymous in Weather

2007-01-16 09:11:03 · 4 answers · asked by thedougman44 1 in Mathematics

Determine whether each function is linear or quadtatic. Identify the quadratic, linear, and constant terms.

y= x+4

y= 3x(x-2)

f(x)= (3x)(2x) + 6

f(x)= -x(2x+8)

2007-01-16 09:10:49 · 1 answers · asked by Dyphya 2 in Mathematics

What 3 things can affect the pressure of air

2007-01-16 09:10:13 · 2 answers · asked by simply happy 2 in Earth Sciences & Geology

2007-01-16 09:10:12 · 14 answers · asked by Zezo 2 in Astronomy & Space

2007-01-16 09:08:48 · 4 answers · asked by Jacob R 1 in Astronomy & Space

2007-01-16 09:08:21 · 2 answers · asked by Lola 1 in Chemistry

the label on the bottle directs you to add 22g of medium to 1000ml of distlled water . how many grams should you weigh to prepare 250 ml of medium?

2007-01-16 09:08:13 · 4 answers · asked by f w 1 in Chemistry

2007-01-16 09:07:12 · 6 answers · asked by Anonymous in Earth Sciences & Geology

2007-01-16 09:05:56 · 1 answers · asked by Chris Y 1 in Earth Sciences & Geology

2007-01-16 09:05:14 · 15 answers · asked by Anonymous in Geography

Solve the following equation. -3(x+4)=7(2x-5)

2007-01-16 09:04:54 · 9 answers · asked by alextapurpleyu 1 in Mathematics

A 21 kg round table is supported by three legs equal distances apart on the edge. What minimum mass, placed on the table's edge, will cause the table to overturn?

2007-01-16 09:04:06 · 4 answers · asked by Chris H 2 in Physics

Assume a function F = F1(x) F2(y)
where x = X + x', y = Y + y'. X is a mean value and x' the fluctuation about mean.
F ~ [F1(X) + (dF1/dx) x'] [F1(Y) + (dF2/dy) y']; this uses 0th and 1st order approximation of Taylor series expansion; derivatives are expressed at mean value X and Y.
So F ~ F1(X) F2(Y) + (dF1/dx) (dF2/dy) x'y'; here I took the average of F, so that the average of x' and y' is zero.
My question is that I'm dealing with large fluctuations about the mean and I found that F cannot be approximate by a Taylor series expansion even when I take higher order terms. Should I give up on this, or is there a better way of expanding functions with large fluctuations about mean?
Any help is appreciated, and please contact me if you need clarifications.

2007-01-16 09:03:53 · 2 answers · asked by ben 1 in Mathematics

I do not know how to do these. I could not even begin to know what you call them. Could someone help me by breaking it down and showing me all steps so I will be able to do the rest of my homework. I just need someone to show me. Your help would be so appreciated.

2007-01-16 09:01:53 · 9 answers · asked by whispertree 3 in Mathematics

Whats your educated guess? Im not trying to make you solve my homework, (besides i'll find out myself) but i still want to know what do you personally think.My hypothesis is that yes it can to put in a simple way. Anyways thank you for your input and take care.

2007-01-16 09:00:01 · 9 answers · asked by Anonymous in Chemistry

please help asap

2007-01-16 08:58:25 · 6 answers · asked by colonelkunal 1 in Mathematics

If one side of a right triangle measures 8, and the adjacent side measures 6, what is the diagonal side measure?

2007-01-16 08:57:17 · 12 answers · asked by keyboard 2 in Mathematics

A y = 5x + 4

B

C

D y = 5x – 4

Which of the following sets of points can be found on the line y = x – 1?

A (3, 1) and (2, 3)

B (–3, –3) and (9, 5)

C (6, 2) and (–3, –2)

D (0, –1) and (9, 8)

2007-01-16 08:54:17 · 3 answers · asked by .::Princess::. 1 in Mathematics

On January 1, Kate invested $750 at 8.2% per annum, compounded semi-annually. On July 1, she invested another $750 at the same rate. How much will she have from these investments on the next July 1st?

2007-01-16 08:53:26 · 3 answers · asked by untilyoucamealong04 3 in Mathematics

that the multiverse is a reality? Or do many people think that one cannot extrapolate from the quantum level to the universal?
(Be gentle with me. I can barely add and subtract. Though I did read a book on quantum mechanics once. It had pictures).

2007-01-16 08:53:14 · 6 answers · asked by Anonymous in Physics