Science & Mathematics - 7 February 2007

2007-02-07 15:04:52 · 10 answers · asked by kingdom 1 in Chemistry

2007-02-07 15:04:44 · 6 answers · asked by lizzeth 1 in Biology

A piece of unknown metal has a width of 3.2cm, a length of 17.1cm and height of 4.6cm. Its mass is 1.4kg. Calculate the density of the metal. Express your answer in grams per cubic centimeter using two significant figures.

I have a test in the morning and really need to know how to do this and not just the answer. Hopefully you can help me... Thank you so much! :)

2007-02-07 15:04:36 · 2 answers · asked by Anonymous in Chemistry

2007-02-07 15:04:11 · 1 answers · asked by Ford Prefect 7 in Mathematics

Suppose a person can reduce the pressure in his lungs to 80 mm Hg gauge pressure. How high can water then be sucked up a straw?

2007-02-07 15:03:50 · 1 answers · asked by wzerocx 2 in Physics

ations

2007-02-07 15:03:25 · 3 answers · asked by ititit3 2 in Mathematics

Two other examples of complexing agents are Cl- and CN-. Write the net ionic equation for the following.

Iron(II) ions react with cyanide ion, CN-, in aqueous solution to form the complex, Fe(CN)6^4- (aq)

2007-02-07 15:00:43 · 2 answers · asked by Alan l 1 in Chemistry

2007-02-07 15:00:23 · 8 answers · asked by Megan 2 in Astronomy & Space

Can somone teach me how to subtract 3 1/2-2 2/6?
TEACH ME!! i dont want just the answer, thanks!

2007-02-07 15:00:02 · 12 answers · asked by Anonymous in Mathematics

2007-02-07 14:59:49 · 10 answers · asked by Megan 2 in Astronomy & Space

2007-02-07 14:59:19 · 4 answers · asked by Anonymous in Mathematics

please show how you got it

2007-02-07 14:58:28 · 11 answers · asked by ititit3 2 in Mathematics

Can somone teach me how to subtract 3 1/2-2 2/6?
TEACH ME!! i dont want just the answer, thanks!

2007-02-07 14:57:16 · 8 answers · asked by Anonymous in Mathematics

2007-02-07 14:57:14 · 11 answers · asked by beezer0201 1 in Medicine

2007-02-07 14:56:27 · 2 answers · asked by blah 3 in Physics

Please show work/explain!
Thank you!

2007-02-07 14:55:13 · 6 answers · asked by Licorice 4 in Mathematics

2007-02-07 14:54:32 · 6 answers · asked by ira a 4 in Weather

I have the vertical leap board, but I am unsure of how high to place it on the wall.

2007-02-07 14:54:17 · 1 answers · asked by skoolmorm 1 in Mathematics

I've spend all night on this long multi-step problem. I can't figure out the last step and if I guess wrong one more time I will have to start all over again. Can someone please help me out with this?

f(x)=7x^2

the instantaneous rate of change of y=f(x) with respect to x at x = 4

so far I have :

( 7(4 + h)^2 - 7(2)^2 ) / ( h )

Thanks a lot.

2007-02-07 14:52:42 · 4 answers · asked by Anonymous in Mathematics

how come it is easy to balance a bicycle while riding, but not while stationary? please use as many physics terms as you can.

thanks!

2007-02-07 14:52:27 · 3 answers · asked by Ironman123 1 in Physics

I was just wondering how many more "educationally challenged" people out there are going to keep asking about the moon landings. Any half-wit with even a smattering of physics knowledge knows that they HAD to have been on the moon. Every argument I've heard that it was all faked is so full of holes and lacking even a basic knowledge of physics. I wish these people would turn off the video games and TV and CRACK A FRIGGIN' BOOK once in a while. Jeez!

2007-02-07 14:52:11 · 10 answers · asked by kevpet2005 5 in Astronomy & Space

I know dogs fart, but I wonder if cats or other animals do. You see bubbles coming out of fish and would like to know if those are farts.

2007-02-07 14:51:43 · 4 answers · asked by Mike O 1 in Zoology

How about in heavy season and dry season?

2007-02-07 14:50:30 · 1 answers · asked by ira a 4 in Other - Science

What is the change in the (liquid) water's temperature if the engine operates until 836000 J of Heat are added?

And the specific heat of water is 4.18

But i don't know how to plug it in.

2007-02-07 14:50:09 · 3 answers · asked by Eric 1 in Physics

I'm a woodturner and I've made a tool out of A2 tool steel. I'd like to know how to harden it and anneal it. I also need to be able to use a shop torch if possible. Thanks!!

2007-02-07 14:45:45 · 3 answers · asked by Gina P 2 in Chemistry

What is the system of the following linear system?

5x-6y= -10
-15x+14y=10

A. (-5,-8)
B. (-2,0)
C.(4,5)
D. (10,10)

Can you please show your work and explain to me how you got it please I really want to get it. Thanks.

2007-02-07 14:45:29 · 8 answers · asked by Anonymous in Mathematics

If you feel different about any of the three explain

2007-02-07 14:44:35 · 30 answers · asked by andy 2 in Other - Alternative

I am in practical skills in applied tech.in school and I have a crossword puzzle I need help with!
1) measurement system based onmultiples of 10 ( 6 letter)
2)amount of energy used by an electrical device(7 letter)
3)the round prong on an electrical plug (6 letter)
4) device which uses air bubble to determine positioning. (5 letter)
5) measurement system based on the length of the king's foot (7 letter)
6)screwdriver with tip (8 letter)
7) pip which prevents noxious or poisonous gases from entering the house. (5 letter)
8) device used to remove waste water from sink (3 letter)
9) hardware which provides defense against intruders (7 letter)
10) device used in drywallor masonry to help fasten a screw (6 letter)

thank you all for who ever answered some or all my questions i greatly appreciateit!!!!

2007-02-07 14:43:52 · 3 answers · asked by lover2 1 in Engineering

Suppose a baseball is shot up from the ground straight up with an initial velocity of 32 feet per secon. A function can be created by expressing distance above the ground, s, as a function of time, t. This function is s= -16t^2 + v0t +s0 (The function that describes this problem is (s =-16t^2 +32t + s). Where do I start with the following question. (The ball will be how high above the ground after 1 second)

2007-02-07 14:43:43 · 1 answers · asked by Rainese G 1 in Mathematics

2007-02-07 14:42:39 · 3 answers · asked by lusi x 1 in Mathematics