Science & Mathematics - 24 October 2006

2006-10-24 11:18:50 · 5 answers · asked by Nicole P 1 in Other - Science

Hi everyone. I am just wondering, is there sodium chloride in soap? You know, in just like those regular hand soaps in bathrooms. Its for a science project, because I want to corrode iron nails and I think sodium chloride does that. Thanks!

2006-10-24 11:17:22 · 3 answers · asked by Mallory B 3 in Other - Science

trying to rig up some sort of power supply to turn on a light or small portable dvd player with a battery and some electronic suff from the electronic store. my lights are off !

2006-10-24 11:16:27 · 9 answers · asked by michael p 1 in Engineering

2006-10-24 11:16:20 · 2 answers · asked by Anonymous in Physics

Find the distance between the midpoints of line AC and line CB. Show work

2006-10-24 11:10:12 · 5 answers · asked by Anonymous in Mathematics

2006-10-24 11:08:46 · 14 answers · asked by Missi 1 in Geography

Find the coordinates of the 4th vertex. Show work.

2006-10-24 11:08:34 · 5 answers · asked by Anonymous in Mathematics

A train is headed down a track at 25 meters/second. Ahead of the train, at a distance of 10 kilometers, is a rail cart moving down the same track in the same direction at 4 meters/second.

How many seconds will it take for the train to overtake the rail cart?

What equation do I have to use?

2006-10-24 11:06:35 · 5 answers · asked by kagurarox 2 in Physics

2006-10-24 11:05:27 · 8 answers · asked by shorty 1 in Other - Science

ten more than the quotient of a number and -2 is tree

2006-10-24 11:05:13 · 5 answers · asked by Sharleen R 1 in Mathematics

Also if you could name one other photosynthetic thing in salt water or fresh water.

2006-10-24 11:02:01 · 4 answers · asked by Ryan W 1 in Biology

do cooked beans grow?

2006-10-24 10:58:42 · 4 answers · asked by Anonymous in Other - Science

You are debating with a person and they say that on the design of a roller coaster, each summit must be lower than the previous.
You say that that deosn't matter as long as the first summit is the tallest. Who is correct and why?

2006-10-24 10:58:33 · 9 answers · asked by Dancing Star 1 in Physics

what happens when you mix bleach and alcohol together? does it explode and kill you or something?

2006-10-24 10:57:06 · 7 answers · asked by Holly Advice 2 in Chemistry

Container has shape of an open right circular cone. Height of container is 10 cm and diameter of top opening is 10 cm. water is evaporating so its depth, h, is changing at constant rate of -3/10 cm/hr.
a. find the volume V of the container when h=5 cm. ((Volume of cone = 1/3pie*r^2*h))
b. Find rate of change in the volume of the water with respect to time when h = 5 cm.
c. show that rate of change of volume of water due to evaporation is directly proportional to the exposed surface area of the water. what is the constnat of proportionality??
i did the first one, but i am not sure if it is right. i got (31.25*pie)/3
is this right?
also, part b, i took the derivative of...the volume equation?
and then i put in -3/10 cm for dh/dt, and 2.25 cm for r, but then i dont have dr/dt?
im confused. What is the equation i should be using for this part?
i am using dV/dt = 1/3*pie*2r*dr/dt*dh/dt
is this right...i dont think it is?
ANY help is greatly appreciated!! THANKS!

2006-10-24 10:54:37 · 3 answers · asked by Anonymous in Mathematics

A=15
B=18
C=6 square root of 3
D=Square root of 78

thanks for all of your help and please explain your answer..i will give the person who helps me out the most best answer as soon as yahoo lets me. thanks again

2006-10-24 10:54:26 · 6 answers · asked by bob s 2 in Mathematics

I'm writing my college apps right now and this is how it starts... Studying is easy, if you like the subject. But when you don’t like the subject, it could be like studying __(inter clever saying here) _______.

I'd like it if it's really geeky and has to do w/ science, preferablly physics. Make it as outrageous as possible!

2006-10-24 10:51:33 · 7 answers · asked by Anonymous in Physics

Come on help the blonde do her homework please lol


1. 2(x+1) = 10

2. 3(2x+8) = 30

3. 5(5x-1) = 20

4. 4(4y+1) = 36

5. 9(2y-10) = 0

6. 7(5y-2) = 56

7. 2(k+2) + 6 = 21

8. 4(2w+1) - 3 = 17

9. 3(3p+3) + 3p = -3

10. 5(q+3) + 2(2q-5) = 23

11. 5(3d+2) + 3(1-2d) = 13

2006-10-24 10:49:24 · 9 answers · asked by Anonymous in Mathematics

As the internal organs are soft and the shell is hard, how is the shell expanded without generating excessive pressure on their internal organs.

2006-10-24 10:48:58 · 12 answers · asked by wizatronic 1 in Biology

2006-10-24 10:48:28 · 12 answers · asked by momoftwins1986 1 in Mathematics

A) HBr B) H2S C)HC2H3O2 D)HClO2 E) HClO

2006-10-24 10:47:02 · 1 answers · asked by BILLY D 1 in Chemistry

Help! One of my SAT books says that zero is an even number. One of them says that zero is neither even nor odd. Where can I find zero's correct identity?

2006-10-24 10:43:49 · 3 answers · asked by zippo 2 in Mathematics

2006-10-24 10:43:17 · 6 answers · asked by Anonymous in Chemistry

A) LiOH B) Ba(OH)2 C) NH3 D) HOCL E) KOH

2006-10-24 10:43:03 · 2 answers · asked by BILLY D 1 in Chemistry

a- square root of 7a___B-7a___C-5a___D % square root of a


Thnaks for your help and please explain how u got ur answer.

2006-10-24 10:42:16 · 3 answers · asked by bob s 2 in Mathematics

A) FeCl2 B) Hg2Cl2 C) NaCl D) BaCl2 E) ZnCl2

2006-10-24 10:40:43 · 3 answers · asked by BILLY D 1 in Chemistry

Spent the last few day's noticing how much plastic I have in my house: bathroom cupboards, kitchen cupboards, children's toys, council bins ....list goes on! If this material is difficult to dispose of why are we using it? Is there an alternative material?

2006-10-24 10:39:14 · 10 answers · asked by Sally 2 in Chemistry

A) -3 B) +3 C) +1 D) +5 E) 0

2006-10-24 10:38:42 · 3 answers · asked by BILLY D 1 in Chemistry

2006-10-24 10:35:48 · 12 answers · asked by kingofqueens_101 1 in Mathematics

I mean it were gone tommorrow would you really miss it?

Or rather is the moon an essential body without which life could not have evolved on planet earth?

2006-10-24 10:31:42 · 27 answers · asked by Anonymous in Astronomy & Space