Science & Mathematics - 15 November 2007

es para quimica...
me lo dejaron d tarea y no lo encuentro..

podria ser permaganato potasico de calcio?

2007-11-15 14:29:59 · 1 answers · asked by Anonymous in Chemistry

2007-11-15 14:29:13 · 3 answers · asked by michelle d 1 in Botany

how to draw pascal triangle ?

i forget it very easily .

can you please help me to remember it ?

can you please tell me any tricks / mnemonic ?

tell me some tricks which will help me to remember it always.

thanks

2007-11-15 14:28:58 · 5 answers · asked by calculus 1 in Mathematics

thank you to everyone who answered my last factoring question, but what do you do if theres a number in front of the x^2?

2007-11-15 14:27:54 · 4 answers · asked by Anonymous in Mathematics

This is a rather advanced problem, so either skim it or dig in!

If all space were empty except for two nearby masses, say two drops of water, the drops would, according to Newton's Law of gravity, be attracted together. Now suppose all space were full of water except for two bubbles. How would the bubbles move?

a) They would move apart
b) They would not move at all
c) They would attract each other

2007-11-15 14:26:05 · 6 answers · asked by ? 6 in Physics

A 69 kg diver jumps off a 10.4 m tower.
(a) Find the diver's velocity when he hits the water.
m/s __________
(b) The diver comes to a stop 2.0 m below the surface. Find the net force exerted by the water.
___________Newtons

2007-11-15 14:25:44 · 1 answers · asked by Anonymous in Physics

AP chemistry question- thermal energy

2007-11-15 14:23:48 · 4 answers · asked by chaniquana 1 in Chemistry

anyone knows what program to use to draw Kano Diagram??

2007-11-15 14:22:29 · 1 answers · asked by Lin 1 in Engineering

Two identical containers are open at the top and are connected at the bottom via a tube of negligible volume and a valve that is closed. Both containers are filled initially to the same height of 1 m, one with water, the other with mercury. The valve is then opened. Water and mercury are immiscible. Determine the fluid level in the left container (water) when equilibrium is reestablished.

2007-11-15 14:21:23 · 1 answers · asked by Ariel 2 in Physics

I have Eveready batteries for electronic application, they come in different voltages like 15, 22.5 ets. What is the difference from regular 9 V duracell batteries, besides the voltage?

I need an 18 V DC source for 3mA current that would last for a long time. I know I could always experiment. I'm asking cause it's critical in my case that it won't die - a lot of stuff stops working and irreversible changes happen.

Can I assume that a larger (in physical size) battery will last longer?

2007-11-15 14:20:15 · 8 answers · asked by Snowflake 7 in Engineering

1.I once was a volcano
But now I'm a wreck
Erosion has made me
A volcanic _______
2.I came from a glacier
But nobody knows
Just how i was formed
under all of these snows.
What am I?
3I used to be a river
But now I am a hill
I flowed through a glacier
But now I am still
What Am I?
4.I once was a river
But now I'm a lake
that darned old cutoff
caused the break
What Am I?

2007-11-15 14:19:18 · 7 answers · asked by Johnny K 3 in Earth Sciences & Geology

2007-11-15 14:17:58 · 4 answers · asked by Anonymous in Zoology

The moon's inhabitants use a unit of distance called lunar. The number of square lunars in the moon's surface is the same as the number of cubic lunars in the moon's volume. Assume the moon's diameter to be 2160 miles. How long is a lunar in miles?

2007-11-15 14:16:18 · 2 answers · asked by ineco110 2 in Mathematics

i don't know how to factor in general but i really got stuck on this one, and i'm not sure why so thanks for any help :)

2007-11-15 14:15:34 · 12 answers · asked by Anonymous in Mathematics

2007-11-15 14:12:50 · 2 answers · asked by priya 1 in Zoology

Two blocks of masses 9kg and 18kg are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them. A cord holding them together is burned, after which the block of mass 18kg moves to the right with a speed of 13 m/s. What is the velocity of the other mass in m/s?

This is how I thought you did it...
(18kg)(0) + (9kg)(0) = (18kg)(13m/s) + (9kg)(Vf)

Vf=26m/s but thats not right :( what am I doing wrong?

2007-11-15 14:12:26 · 1 answers · asked by Katie E 2 in Physics

2007-11-15 14:10:42 · 4 answers · asked by dands81184 2 in Physics

Where is cat the the cat?
Where is the the cat?
Where is cat?
Where is is is is the cat?
Where the is cat?

2007-11-15 14:08:56 · 2 answers · asked by Scigirl 3 in Geography

2007-11-15 14:05:01 · 10 answers · asked by Anonymous in Mathematics

how can you show that's true? i have no idea where to begin so please show all steps. thanks so much!

2007-11-15 14:03:58 · 8 answers · asked by Anonymous in Mathematics

A person who weighs 740 N steps onto a spring scale in the bathroom, and the spring compresses by 0.69 cm.
(a) What is the spring constant?

I don't know..I tried k=740/.69, but this was incorrect.

(b) What is the weight of another person who compresses the spring by 0.29 cm?

This one I got. I set .69/.29=740x and got 311N which was correct. I don't know why I can't get the first part, but I would really appreciate anyone who would help me out! :)

2007-11-15 13:59:59 · 5 answers · asked by NoV A 2 in Physics

2007-11-15 13:59:06 · 1 answers · asked by *click* 3 in Physics

2007-11-15 13:58:41 · 1 answers · asked by Anonymous in Mathematics

7 times, blank = 34 - 13 ?

2007-11-15 13:56:59 · 5 answers · asked by bernadette q 1 in Mathematics

Please Help

1) y = 2x + 11
y = -x + 5

2)) y = 4x - 3
y = 5x - 1

2007-11-15 13:56:41 · 6 answers · asked by getLO0SE 5 in Mathematics

The area of the round bottom of the can, that is. Its center is just a point, over which the cube may or may not land.

2007-11-15 13:55:50 · 2 answers · asked by Scythian1950 7 in Mathematics

what kind of animal would you b n y? uma apple head........
um cute thats y

2007-11-15 13:55:22 · 4 answers · asked by Anonymous in Zoology

2007-11-15 13:55:17 · 13 answers · asked by cutie #1 1 in Astronomy & Space

I have a test on these tomorrow, and I'm almost totally lost... Pleast help me with these problems:
Find the midpoint of BD B=(-5, 12) D=(-8,5)
Write th eequation of th eline through C and D in A) point-slope form B) slope-intercept form

2007-11-15 13:54:57 · 3 answers · asked by Anonymous in Mathematics

2007-11-15 13:50:10 · 10 answers · asked by Doll♥. 3 in Weather