Science & Mathematics - 26 November 2007

I know that NaCN would react with water to form toxic HCN. But does it react with alcohol?

2007-11-26 10:50:07 · 2 answers · asked by Doodlee 3 in Chemistry

Please help me solve this problem, I have no idea how to start it.

A rock thrown vertically upward from the surface of the moon at a velocity of 24 lm/sec reaches a height of s= 24t - 0.8t² meters in t seconds.

a) Find the rock's veloctiy and acceleration (the acceleration in this case is the acceleration of gravity on the moon.)

b) How long did it take the rock to reach it's highest point?

c) How high did the rock go?

d) How long did it take the rock to reach half of its maximum height?

e) How long was the rock aloft?

If you could show your steps and explain what you are doing it would help alot. Thanks for your help!

2007-11-26 10:50:01 · 1 answers · asked by harmony8423 1 in Mathematics

2007-11-26 10:48:55 · 5 answers · asked by emmert j 1 in Mathematics

PLease Help! Thanks.

a) CO2
b) O2
c) SrO
d) HCOOH
e) P4O6
f) Ba(OH)2

2007-11-26 10:48:26 · 2 answers · asked by Anonymous in Chemistry

2007-11-26 10:48:05 · 2 answers · asked by tonie r 2 in Earth Sciences & Geology

2007-11-26 10:47:59 · 2 answers · asked by Yahoo! 5 in Physics

What about movie?

2007-11-26 10:46:36 · 8 answers · asked by trackman 3 in Paranormal Phenomena

2007-11-26 10:46:01 · 2 answers · asked by cherylx08 1 in Chemistry

I found the first part.

Please read the question:

A block of mass 15 kg starts from rest and slides a distance of 6 m down an inclined plane making an angle of 40 degrees with the horizontal. The coefficient of sliding friction between block and plane is 0.4 .
The acceleration of gravity is 9.8 m/s^2.

Question one - What is the net force on the block along the incline? answer in units on N.

Answer - I know the answer to question one is 49.446365.

HERE IS THE HELP I NEED

QUESTION 2 - What is the speed of the block after sliding 6 meters? Answer in units of m/s.

QUESTION 3 - What would be its speed if friction were negligible? Answer in units of m/s.

APPRECIATE EVERYONES HELP!!!!!

THANK YOU!!!!

2007-11-26 10:45:30 · 1 answers · asked by mimi j 1 in Physics

ok, so i need to know the part of the shuttle that, when open, provides access to the payload.
what is the system used to start the shuttle in an emergency?
what is the hinged moveable shuttle panel?
what is the shuttles system of locomotoin?
what is the lift plane of the shuttle?
and what catches a satellite in need of repair ?

2007-11-26 10:45:18 · 2 answers · asked by PeaceHopeLove 2 in Astronomy & Space

2007-11-26 10:44:55 · 6 answers · asked by Adam 1 in Chemistry

They say they can teleport small objects such as rocks,do you think in 50 years,everything will be like Star Trek and Star Wars w/ phasers,teleporters,and lightsabers,and stuff?

2007-11-26 10:42:59 · 7 answers · asked by Anonymous in Astronomy & Space

I found this riddle at a high IQ society I belong to and have yet to see anyone break it - I figured it out, can you? Do you think you're smart enough to break the code? It's actually quite simple, so I'm hoping a population with limited knowledge of ciphers will be able to break this quickly.


Can you find the hidden message? The two words are represented below by the numbers where each number represents a letter...here's a clue: My first and last are in CUBES.

21 4 19 27 10 / 14 25 18 40 42

First person to provide me the correct response AND the logic behind the cipher will win 10 points.

Come on Yahoo Answers, show me what you got.

2007-11-26 10:39:05 · 3 answers · asked by CubeScience 3 in Mathematics

I have gotten prescriptions for antidepressants and ADHD meds in the past from GPs, but I have mixed feelings about this. On the one hand, if you have already been diagnosed with a mental disorder by a qualified professional, it's handy to be able to get a prescription from a GP you already know and trust. However, I can't help but think that GPs usually specialize in physical ailments rather than psychological ones, so I wonder how often GPs prescribe the wrong psychiatric medication to their patients.

2007-11-26 10:37:17 · 6 answers · asked by tangerine 7 in Medicine

William tell is shooting at an apple hanging in a tree. The apple is a horizontal distance of 20 m away and at a height of 4 m above the ground. If the arrow is released from a height of 1 m above the ground and hits the apple .5 s later, what is the initial velocity?

2007-11-26 10:35:25 · 3 answers · asked by Anonymous in Physics

The ages of the three children in the Suvari family are prime numbers. The oldest is 10 years older than the youngest. Altogether, their ages toatl 35 years. How old are the three Suvari children?

Could you please when you give the answer to show me how you got the answer.

2007-11-26 10:30:29 · 4 answers · asked by Successor 5 in Mathematics

http://s226.photobucket.com/albums/dd11/jackphotos123/?action=view¤t=moon.jpg

2007-11-26 10:27:00 · 11 answers · asked by Alexander 6 in Astronomy & Space

math

2007-11-26 10:25:46 · 6 answers · asked by Anonymous in Mathematics

If there is a 6% sales tax on a sweatshirt that costs $22.00, what will be the total cost of the sweatshirt?

2007-11-26 10:22:54 · 33 answers · asked by Anonymous in Mathematics

A farmer grows 252 kilograms of apples. He sells them to a grocer who divides them into 5 kilogram and 2 kilogram bags. If the grocer uses the same number of 5 kg. as 2 kg. bags, then how many bags did he use in all?

2007-11-26 10:20:07 · 2 answers · asked by Anonymous in Mathematics

What causes curved space?

2007-11-26 10:19:54 · 6 answers · asked by Yahoo! 5 in Physics

2007-11-26 10:19:37 · 1 answers · asked by tushita s 1 in Botany

And I need to know why they don't go around devouring everything. Do they move at all?

2007-11-26 10:19:02 · 7 answers · asked by pspkilla 4 in Astronomy & Space

if the ionization energy of C(g) is 1086 kJ/mole?

Answer in units of J.

2007-11-26 10:18:44 · 1 answers · asked by Anonymous in Chemistry

Georgia's bill for dinner was $25.00. She left the waitress a tip of $5.60. What percent of the bill did the waitress recieve in tips?

2007-11-26 10:18:41 · 9 answers · asked by Anonymous in Mathematics

1. In the spring of the year maple trees are tapped for sap to make sugar. True/False and why?
a.)True, maple trees are tapped in the spring because the sap begins to flow and the starch that was stored in the roots all winter changes back into sugar
b.)False, maple trees are not tapped in the spring because after the winter there is not enough sap to bother extracting. It must build up through the spring and summer.
c.)False, maple trees are tapped in the fall to ensure that the tree has enough energy stored to make it through the winter.

2. Potato beetles do not eat the tubers of the plant which man uses; they feed only on the leaves. Why take the trouble to poison the beetles then?
a.)Because beetle dung causes the potatoes to have a bitter flavor
b.)Because if the leaves are destroyed no photosynthesis takes place and the plant has no extra food to be stored as a potato
c.)Because the beetles burrow into the potatoes to lay their eggs

2007-11-26 10:17:23 · 1 answers · asked by . 2 in Botany

Sorry i just want to be sure!

=D

2007-11-26 10:15:36 · 6 answers · asked by Anonymous in Mathematics

I have two problems that i dont get so can someone tell me what i did wrong? heres my work

7x + 30 = -12x + 30

then

19x + 30 = 30

then

19x = 0

then i dived 19 by zero and got 19...


and for my other problem

8x - 3 = 8x + 13

then

8x= 8x + 16

then

i got 16x= 0


















what am i doing wrong?? PLEASE help ASAP

2007-11-26 10:14:56 · 11 answers · asked by liviy94 3 in Mathematics

2007-11-26 10:12:36 · 3 answers · asked by frumusetza 1 in Chemistry

2007-11-26 10:09:07 · 6 answers · asked by nina3vedi@sbcglobal.net 2 in Chemistry