Science & Mathematics - 3 November 2006

i have substitute salt ( i will say that cause it has potassium chloride and ammonium chloride), potassium permanganate, ethanol, liquad hydrocarbons, borax, hydrogen peroxide, sodium hypochlorite, sodium chloride, chlorine, hydrochloric acid, sodium bicarbonate,

2006-11-03 14:27:36 · 8 answers · asked by Me + Me = BANG! 2 in Chemistry

How can I locate them?

2006-11-03 14:25:42 · 3 answers · asked by Kristen P 2 in Astronomy & Space

2006-11-03 14:24:24 · 9 answers · asked by redstorm 3 in Astronomy & Space

okay so pretty much i royally screwed myself by not realizing i had an astronomy project due til the last minute. im supposed to have drawn 5 nights worth of moon observations, one per night. I was wondering if anyone has done their own, or if anyone knows where i can find recent photos of the moon, it would be much appreciated. I know this is my fault but i really want to get this grade, Thanks

2006-11-03 14:18:36 · 4 answers · asked by sunshinedazeandpurplehaze 1 in Astronomy & Space

i was hammering really hard on a piece of steel in my vice, really wailing on it so it would bend, then all of a sudden awhen i struck it a magnet sitting on the workbench about a foot away exploded into several pieces!!

the magnet is a thin ring speaker magnet about 2 inches across and covered in steel filings

and i didn't touch it with the hammer, but my whole workbech was vibrating apart

2006-11-03 14:18:33 · 6 answers · asked by Anonymous in Engineering

2006-11-03 14:15:50 · 9 answers · asked by generalche22 3 in Physics

does anyone know any facts about Charles Darwin besides that he discovered the theory of evolution by selective breeding.

2006-11-03 14:15:41 · 12 answers · asked by Anonymous in Earth Sciences & Geology

We can use the textbook results for head-on elastic collisions to analyze the recoil of the Earth when a ball bounces off a wall embedded in the Earth. Suppose a professional baseball pitcher hurls a baseball (m = 155 grams = 0.155 kg) with a speed of 98 miles per hour (vball = 43.1 m/s) at a wall, and the ball bounces back with little loss of kinetic energy.

(a) What is the recoil speed of the Earth (M = 61024 kg)?


(b) Calculate the recoil kinetic energy of the Earth and compare to the kinetic energy of the baseball. The Earth gets lots of momentum (twice the momentum of the baseball) but very little kinetic energy.


I think i could figure this out if I knew how to write up the energy principle equation. Either way, can someone please explain how to do this? I just wanna get this done (but also how i can do it of course)

Thanks everyone

2006-11-03 14:15:14 · 2 answers · asked by jnieves01 1 in Physics

Little boy was a 12 killaton bomb. Could they make one with only a few hundred pounds of TNT yield?

2006-11-03 14:08:03 · 3 answers · asked by Anonymous in Physics

Will the earth fall downward? If so, what would be pulling it downwards? Please help me, I've thinking about this all-night and never got no sleep, My girlfriend even kicked me out the bed, literally (weep)

2006-11-03 14:08:00 · 10 answers · asked by PrinceOfDarkness 2 in Astronomy & Space

this is for a debate subjet so please give me valid info

thanks

2006-11-03 14:02:53 · 8 answers · asked by Beligie 1 in Medicine

2006-11-03 14:02:41 · 3 answers · asked by wicked 1 in Mathematics

A phone cal froom city x to city y costs $1.00 for the first 3 min and $0.20 for each addtional minute. If r is an integer greater than 3m a phone call r minutes long will cost how many dollars?

r+2/5 is answer

3*10^4 is greater than 4*103 by wht percent

among the 2 which is greater
1>the volume of a can that is right circular cylinder wtih radius of 5 centimeters

2>the volume of a can that is right circular cylinder wtih radius of 4 centimeters


Of 65 people polled , 20% said that, givner the choice among thr 3 colors red, blue, and green they preferred the color blue.
1>the number of people who said they prefered the color blue?
2>one-half the number of people who said they prefered the color green?


pls answer to all these questions

2006-11-03 14:02:25 · 1 answers · asked by lak p 1 in Physics

is it a full moon or waxing gibbous?

2006-11-03 13:59:32 · 5 answers · asked by Anonymous in Astronomy & Space

Or any other desert area for that matter? Question says it all. I always sort of wondered that ever since they started this genetic engineering with plants all those years ago.

2006-11-03 13:58:19 · 9 answers · asked by Part Time Cynic 7 in Botany

A garden hose of inner diameter 2 cm carries water at 2 m/s. The nozzle at the end has diameter 0.42 cm. How fast does the water move through the nozzle?

2006-11-03 13:55:27 · 5 answers · asked by Anonymous in Physics

It is supposed to be a uniform angle, not dependant on mass, weight, velocity etc. The mass starts at the top of the circular object and begins sliding down the circle eventually there is a point when it gets airborne. Anyone know?? I have tried searching and can't find answer! Thanks

2006-11-03 13:54:06 · 5 answers · asked by Anonymous in Physics

A sample of cocaine, C17H21O4N, is diluted with sugar, C12H22O11. When a 1.00-mg sample of this mixture is burned, 1.00mL of carbon dioxide (d=1.80 g/L) is formed. What is the percentage of cocaine in this mixture?

The answer, according to the text, is 28%, but my friend and I have no idea how this answer was obtained. If you can offer us any insights, we would greatly appreciate it!

2006-11-03 13:45:58 · 3 answers · asked by whabtbob 6 in Chemistry

2006-11-03 13:45:17 · 11 answers · asked by ela 1 in Earth Sciences & Geology

substitution method
y=2x-5
4x-y=7

2006-11-03 13:43:51 · 11 answers · asked by Anonymous in Mathematics

For example if it's 6:03 now and something happened at 11:25 last night how do you calculate how long ago it happened?

2006-11-03 13:42:48 · 5 answers · asked by Lleh 6 in Mathematics

2006-11-03 13:42:43 · 8 answers · asked by Anonymous in Mathematics

2006-11-03 13:41:17 · 8 answers · asked by *love_life* 2 in Other - Science

Anything would help; plans, advice, personal experience. etc...

I would like to build three - for grapes, oranges, and pumpkins/watermelons (in that order)

2006-11-03 13:38:45 · 4 answers · asked by Redcap the Druid 3 in Engineering

a) if the rate of motion changes so that the magnet is plunged in andn out 6 times per second, what will the be the new induced voltage?
b) if the number odf coils in the wire is doubled from 100 to 200, and the original rate of 2 times per second is kept the same, what will be the new voltage induced?

2006-11-03 13:33:59 · 2 answers · asked by Anonymous in Physics

2006-11-03 13:32:55 · 5 answers · asked by know more 1 in Mathematics

A baton twirler throws a spinning baton directly upward. As it goes up and returns to the twirler's hand, the baton turns through five revolutions. Ignoring air resistance and assuming that the average angular speed of the baton is 1.70 rev/s, determine the height to which the center of the baton travels above the point of release.

in meters.

Okay. How do I figure out the distance from angular kinematic equations? What equations would I use? (Yes, I feel kind of stupid because this seems like a simple question, but I can't figure it out).

2006-11-03 13:29:45 · 2 answers · asked by Confused 1 in Physics

Can anyone explain to me how to take the first and or second derivative of a function with a Ti-86 calculator.

thanks

2006-11-03 13:25:30 · 3 answers · asked by wasatchjeeper 2 in Mathematics

I need to solve this math question how can I solve it?

2006-11-03 13:23:02 · 11 answers · asked by Lacris 2 in Mathematics

Just some ideas to work with or maybe some tips. I'd like to show how coevolution works. Can any one help me??

2006-11-03 13:20:45 · 7 answers · asked by Mr. Jordan 1 in Biology