Science & Mathematics - 17 December 2006

(Cp1)(M1)(Tf-T1)=(Cp2)(M2)(Tf-T2)

This the formula is in calorimetry.

2006-12-17 09:37:34 · 3 answers · asked by SHAKIL A 1 in Physics

How would you show the equation for this:

A theater charges $4 per person before 6:00 p.m. and $7 per person after 6:00 p.m. The total ticket sales for Saturday was $11,228. What are the possible numbers of people that attended that theater before and after 6:00 p.m.?

2006-12-17 09:37:25 · 4 answers · asked by swift 1 in Mathematics

Hello,

How can I find the solution for this equation:

sqrt(x) = 1+a/x

if this equation has a name, whats is it called??

Thanks in advance for your help.

2006-12-17 09:36:58 · 4 answers · asked by Anonymous in Mathematics

2006-12-17 09:35:05 · 6 answers · asked by styles4u 4 in Mathematics

The sides of an equilateral triangle are increasing at the rate of 27 in/sec. How fast is the triangle's area increasing when the sides of the triangle are each 18 inches long?

2006-12-17 09:33:46 · 4 answers · asked by Blesson 2 in Mathematics

2006-12-17 09:33:44 · 8 answers · asked by Anonymous in Medicine

I'm working on my math homework right now and ive done 6 out of 13 and im no too sure on how to do them if you could please answer these problems so i can check mine. Later I'll be posting my other 7 so stick around.

Perform indicated operation:

1.) ((7ab)/(9c)) * ((81c^2)/(91a^2b))

2.) ((x^2-y^2)/(a^2-b^2)) * ((a+b)/(x-y))

3.) ((a^2-ab)/(3a) divided by ((a-b)/(15b^2)

4.) ((x^2-2x+1)/(y-5)) divided by ((x-1)/(y^2-25)

5.) ((7)/(5a)-(10)/(3ab)

6.) ((6)/(x-5)+(7a))

Also, showing work and checks gets u best answer. And i really suck at math please help.

2006-12-17 09:32:52 · 5 answers · asked by goldenglove1811 1 in Mathematics

I want to create a device that listens to cosmic background radiation.

2006-12-17 09:32:04 · 7 answers · asked by NaTa2 1 in Astronomy & Space

I need this information for a project. Did Leonardo Da Vinci estimate the age of earth? If yes what was his estimate and what was basis/source/reason for his estimate?

2006-12-17 09:31:14 · 2 answers · asked by szhob 3 in Astronomy & Space

i rmber ine of my teachers sayung something about this trick it has to do with stairs and numbers and stuff

2006-12-17 09:29:58 · 7 answers · asked by Anonymous in Mathematics

debbie forgot lindas pnone number. she did remember the first three digits were 297- and that all the rest of the digits in the phone number were 2s and 9s and 7s. debbie is determined to get in touch with linda. "ill just dial phone numbers that fit this description untill i reach her. there cant be THAT many, can there?" she said. how many wrong numbers might she dial?

2006-12-17 09:28:27 · 8 answers · asked by killy 2 in Mathematics

2006-12-17 09:27:44 · 6 answers · asked by styles4u 4 in Mathematics

2006-12-17 09:27:16 · 5 answers · asked by Anonymous in Zoology

2006-12-17 09:26:39 · 5 answers · asked by steventhree1three 2 in Astronomy & Space

You know how soda cans always get wet on the outside when it's hot out? Why does that happen?

2006-12-17 09:25:44 · 12 answers · asked by Anonymous in Other - Science

please follow this guideline
it must be comprehensible
keep it in lamence terms.
seriously simple

2006-12-17 09:25:32 · 3 answers · asked by the questioner 2 in Mathematics

explain to me how to solve the following equation for B
b squared - 40 =-15










Anser: b=___________

2006-12-17 09:22:56 · 16 answers · asked by Anonymous in Mathematics

partA; give an irrational number._________
partB; explain in words how the number in part a in an irrational number.

_______________________________________________________________________________________________________________________________________________________________

2006-12-17 09:20:55 · 13 answers · asked by Anonymous in Mathematics

Is Everest an extreme environment? if so, why? what makes it an extreme environment?
Answer in details plz...
answer ASAP

2006-12-17 09:20:49 · 7 answers · asked by *Kate* 2 in Geography

Its above the number 1

2006-12-17 09:20:16 · 4 answers · asked by Anonymous in Engineering

I really need help with my geometry hw.. answer quickly!!!!

2006-12-17 09:20:01 · 7 answers · asked by Anonymous in Mathematics

what makes it so difficult for people to climb Everest? why is it so hard? answer in details plz...

2006-12-17 09:19:36 · 6 answers · asked by *Kate* 2 in Geography

partA: who is correct
partB: explain how you determined your answer on the linez below.
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2006-12-17 09:19:05 · 3 answers · asked by Anonymous in Mathematics

Is that white light from the moon itself? Is it even white? Thanks to any who answer.

2006-12-17 09:18:47 · 7 answers · asked by Anonymous in Astronomy & Space

http://i143.photobucket.com/albums/r147/rAOL87/Circuit2.jpg

Above is a link to a circuit I must solve. I need to solve for RL, how would I go about doing this?

2006-12-17 09:17:35 · 2 answers · asked by Anonymous in Engineering

In ΔABC, given that a=14.2cm and angle A=38˚ and angle C=75˚, find the length of side b.

2006-12-17 09:17:12 · 5 answers · asked by thomasgraham880 1 in Mathematics

How would I break down:

1. Sodium chloride

2. Carbon disulfide

2006-12-17 09:16:50 · 1 answers · asked by Lottery 1 in Chemistry

i have 3 problems i cant solve due tomorrow and are graded...Please include how to get to the answer

1.A 5.0kg is moving 5.0 m/s along a horizontal frictionless surface toward an ideal spring that is attached to a wall. After the block collides with the spring the spring is compressed a maximum distance of .68m. What is the speed of the block when the spring is compressed to only one-half the max distance


2.A block of mass M is moving along the horizontal frictionless surface with a speed of 5.7 m/s. If the slope is 11(degrees) and teh coefficiant of kinetic friction .26 how far does the block travel up the incline

3A block of 2.0kg is placed on a compressed vertical spring that is compressed .050m the spring is released and it propels the block vertically upward. when the block has risen .60m above its initial postion its velocity is 1.7m. how much potential energy was stored in the spring


Thanks feel free to answer one or all i'll take all the help i can get...

2006-12-17 09:16:39 · 5 answers · asked by mcgee8144 2 in Physics

air-filled baloon is weighted (added a weight at the bottom) so it sink in water. near the surface the balloon has a certain volume. at the bottom, is the balloon smaller or larger or same in size? as the weighted balloon sinks, what happens to its density? what happens to its buoyant force?

2006-12-17 09:14:49 · 3 answers · asked by Anonymous in Physics

Read of it in a popular science magazine- will post the specifics later...

2006-12-17 09:13:46 · 3 answers · asked by insightfireiron 4 in Medicine