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Science & Mathematics - 1 November 2006

[Selected]: All categories Science & Mathematics

Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

2006-11-01 10:51:23 · 1 answers · asked by george m 1 in Chemistry

does anyone know if we can see sound waves and if we can how? if u dont then msybe u know of a website then can help me.

2006-11-01 10:51:05 · 14 answers · asked by peaceboy213 2 in Other - Science

for a science project

2006-11-01 10:50:18 · 6 answers · asked by lexi lay 1 in Astronomy & Space

at the end of a rainbow is there really a pot of gold?

2006-11-01 10:47:44 · 5 answers · asked by Anonymous in Earth Sciences & Geology

how does freezing point and melting point help us identify a substance?>

2006-11-01 10:46:58 · 12 answers · asked by Anonymous in Physics

The barometric pressure is 751 mm Hg.
What is the pressure of the gas sample in Pascals ?

2006-11-01 10:45:30 · 2 answers · asked by simonkf2002 1 in Chemistry

If water drains counter clockwise in the northern hemisphere, and clockwise in the souther hemisphere, what will we see with draining water directly at eh equator??

2006-11-01 10:42:38 · 3 answers · asked by Anonymous in Physics

If a vector problem tells you that the flight instruments show a direction of 30 degrees South of West, is that direction a part of the vector of the velocity of the plane relative to the air OR a part of the vector of the velocity of the plane relative to the ground?

2006-11-01 10:38:06 · 1 answers · asked by c90 4 in Physics

I have worked out this problem and got .77 for part b and that is wrong. I have asked this question already and got some tips, but they aren't working. Can someone work the second part of this problem and tell me how you worked it out?


A 2.50 g bullet, traveling at a speed of 425 m/s, strikes the wooden block of a ballistic pendulum, such as that in Figure 7.14. The block has a mass of 265 g.


http://i21.photobucket.com/albums/b272/Cajunboiler/worstthingever.gif



(a) Find the speed of the bullet/block combination immediately after the collision.


3.9 m/s
(b) How high does the combination rise above its initial position in meters?



Can someone help with part b?

2006-11-01 10:35:51 · 4 answers · asked by Confused 1 in Physics

x^4 + 5x^3 - 30 / x^2 - 3

Find the quotient and remainder

Thanks for the help

2006-11-01 10:34:00 · 6 answers · asked by MysteryMan 1 in Mathematics

simplify

(4/3) / (7/3)

...i have no idea

2006-11-01 10:32:27 · 9 answers · asked by sean_mchugh6 3 in Mathematics

2006-11-01 10:31:06 · 13 answers · asked by Anonymous in Physics

how do you count atoms?

2006-11-01 10:28:45 · 6 answers · asked by lil_flirt_57<3 2 in Chemistry

What is:

1+ i (square root of 3) / 1 - i (square root of three)


the i's are multiplied by the square root of 3 ;)



Gracias

2006-11-01 10:27:29 · 5 answers · asked by Sheyna 1 in Mathematics

1. The frequency and wavelength of all waves are:
a. directly related
b. inversely related
c. unrelated
d. equal

2. The SI unit of cycles per second is called a :
a. photon
b. quantum
c. hertz
d. hund

3. Among the following groups of atoms, which have the same outer energy level configurations?
a. H,He
b. Li,Be,N,Ne
c. Mg,Al,Ca,Ga
d. N.P,As,Bi

4. The wavelength of light with a frequency of 2.50 x 10^13 x s^-1 is:
a. 1.20 x 10^5 m
b. 8.33 x 10^5 m
c. 1.20 x 10^-5 m
d. 8.33 x 10^-5 m

5. Once the electron in a hydrogen atom absorbs energy, it:
a. is now in its gound state
b. is now in its excited state
c. has released a photon
d. none of these

2006-11-01 10:27:03 · 4 answers · asked by Anonymous in Chemistry

2006-11-01 10:24:59 · 2 answers · asked by Adamgenius 2 in Physics

2006-11-01 10:24:53 · 3 answers · asked by Anonymous in Chemistry

help!

2006-11-01 10:24:26 · 9 answers · asked by Linsay P 1 in Mathematics

2006-11-01 10:24:18 · 8 answers · asked by Miyahara H 1 in Mathematics

How do you solve multi-variable problems in which you have to solve a problem with different variables for a certain variable such as "ky+x over gn,for x"?

2006-11-01 10:22:29 · 3 answers · asked by J.D. 3 in Mathematics

2006-11-01 10:22:10 · 9 answers · asked by Anonymous in Geography

2006-11-01 10:21:55 · 8 answers · asked by Anonymous in Other - Science

is it... (x - 9) (x + 6)???

2006-11-01 10:20:17 · 6 answers · asked by Anonymous in Mathematics

its for my homework

2006-11-01 10:19:13 · 3 answers · asked by wlms_dvd 1 in Zoology

Hydrolysis is the reaction of a substance with water to form an acid or a base. Does washing soda, Na2CO3, hydrolyze in water?

pH of washing soda was found to be 9.

2006-11-01 10:18:48 · 3 answers · asked by Ev'rybody Know Me 3 in Chemistry

2006-11-01 10:17:24 · 1 answers · asked by reva h 1 in Mathematics

i need help graphing.x-4y=4=12 i need like step by step work through. and what will the points end up being on the coordinate plane?..thanks

2006-11-01 10:15:09 · 12 answers · asked by iitsbriiittknee 1 in Mathematics

(2 billiards balls)
Using Physics principals, and using as few steps as possible.

2006-11-01 10:13:43 · 7 answers · asked by Anonymous in Physics

Please give scientific data to support your answer.

2006-11-01 10:13:43 · 12 answers · asked by ? 6 in Astronomy & Space

plz show ur work


thx

2006-11-01 10:12:28 · 0 answers · asked by Huda H 2 in Chemistry

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