Science & Mathematics - 6 October 2007

One of my professors had this comic on his door- it shows a cat looking at a table with many triangles and angles drawn on it, as if the cat was calculating serious trig before making its jump.

Does anyone know where I can find this online? I'd love to have a copy of it!!!

2007-10-06 11:12:01 · 1 answers · asked by John 1 in Mathematics

2007-10-06 11:11:06 · 5 answers · asked by Mohd Annas 1 in Biology

Propanol is burned in air
is propanol C3H8O2? if it is, then is it C3H8O2+O2-----> C3H8O5?


(please show me step by step, thanks)

2007-10-06 11:08:05 · 1 answers · asked by Q 2 in Chemistry

If you were to cycle/walk/drive starting from the very top of the West coast of Washington State and continue down the West coast, then across the very bottom of the Southern United States to the southern tip of Florida. Then up the East coast to Maine and finally across the U.S./Canadian border back to your start point in Washington State what would be your total travel distance? And has anybody attempted this?

2007-10-06 11:06:22 · 7 answers · asked by ziplob 1 in Geography

The fastest recorded pitch in MLB was thrown by Nolan Ryan in 1974. If this pitch were thrown horizontally....the ball would fall 0.809 m by the time it reached home plate, 18.3 m away.

The acceleration of gravity is 9.81 m/s2

How fast was Ryan's pitch? In m/s

2007-10-06 11:05:49 · 3 answers · asked by XzoeyX 2 in Physics

A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 58.0 m/s and returns the shot with the ball traveling horizontally at 34.0 m/s in the opposite direction. (Assume the initial direction of the ball is in the -x direction.)

(a) What is the impulse delivered to the ball by the racket?
5.52 N·s 0.0600(34 - (-58))=5.52

(b) What work does the racket do on the ball?
____J

Having trouble figuring out the work.

2007-10-06 11:04:45 · 2 answers · asked by burkehud 2 in Physics

In the Periodic Table of the elements you note that each electron shell fills to capacity before starting to fill the next shell. At least this is the case as far as Argon. Then at Potassium, the N shell begins to fill even though the M shell contains only 8 of its possible 18 electrons. WHY IS IT SO?

2007-10-06 10:58:21 · 3 answers · asked by snas 2 in Chemistry

when I think I touched something on my finger and felt a burning/stinging sensation. I looked at my finger and it was a powdery white in the area that was touched. I tried to wash it off with water, but it wouldn't come off.

At around halfway through my next class, I looked down and the powdery stuff was gone. My hand was a little sweaty because I kept it bunched up in a fist.

Anyways, nothing serious happened, but I want to know what I touched and why that happened.

I was working with some chemicals: hydrogen peroxide and manganese dioxide. Those were the only chemicals at the time. I think it might have been the manganese dioxide...

2007-10-06 10:55:51 · 1 answers · asked by ¤Elva¤ 4 in Chemistry

A dockworker loading crates on a ship finds that a 19 kg crate, initially at rest on a horizontal surface, requires a 84 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 50 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor.

2007-10-06 10:53:37 · 1 answers · asked by swimchic632 2 in Physics

Al(OH)3=H2SO4--->Al2(So4)3+H2O
Fe+O2--->Fe2O3
C7H6O2+O2--->CO2+H2O
H2SO4+HI--->H2S+I2+H2O
FeS2+O2--->Fe2O3+SO2
Al+FeO--->Al2O3+Fe
Fe2O3+H2--->Fe+H2O
Na2CO3+HCl--->NaCl+H2O+CO2
K+Br2--->KBr
C2H2+O2--->CO2+H2O

2007-10-06 10:46:46 · 2 answers · asked by BahamaBabi 1 in Mathematics

If you drop a ball from a certain height, were is the kinetic energy and potential energy? And how about the acceleration energy?

2007-10-06 10:44:16 · 2 answers · asked by snowflake 2 in Physics

hey guys : a problem with this sequence : u(n) = n²(2/3)^n
i found in a book that :
lim n²(2/3)^n = o
but i don't get it, cause as far as i know :
lim n² = +infinity and lim (2/3)^n = 0 lim n²(2/3) = +infinity x 0 wich is an indefinite form....
help me know why it would be 0, i'd really appreciate it ...

2007-10-06 10:42:16 · 4 answers · asked by pepperdawgg 1 in Mathematics

2007-10-06 10:41:28 · 5 answers · asked by mrs_carlos_09 1 in Geography

i need help dividing 3/4 by 1/2

2007-10-06 10:38:34 · 11 answers · asked by Alicia C 1 in Mathematics

Can scientist create a satellite technology to guide a golf ball to its target? Is my idea too imaginative?

2007-10-06 10:37:40 · 7 answers · asked by M m 1 in Engineering

During a babseball game a batter hits a pop up to a fielder 72m away. The accleration of gravity is 9.8m/s2. If the ball reamins in the air for 6.2s, how high does it rise.

2007-10-06 10:36:48 · 1 answers · asked by Handiman 3 in Physics

do you think it would be kewl too show people that my intuitions are real

2007-10-06 10:36:13 · 13 answers · asked by Anonymous in Parapsychology

Okay I don't understand what we have to do here. I mean like theres so many given numbers ... and i've looked in my text book and theres so many equations i dont know which one to pick... If anyone can please help me. You don't need to give me the anwser, if you like change the numbers around that would be okay ( as long as they make sense ) but yeah.. i would really appreciate it if someone can show me step by step.

Thanks sooooo much.

A 25.5-g sample of an unknown metal is heated to 92.5°C and is placed in a perfectly insulated container along with 184.g of water at an initial temperature of 20.05°C. After a short time the temperature of both the metal and water become equal at 23.30°C.
The specific Heat Capacity of water is 4.18 J/g/K in this temperature range.
What is the specific heat capacity of the metal?

2007-10-06 10:34:04 · 3 answers · asked by Anonymous in Chemistry

Is it true that river snakes can't bite you if you are in the water? A friend told me that will only bite if - for example - they got into your boat.

2007-10-06 10:30:59 · 4 answers · asked by Lizziemac 1 in Zoology

1/2(arcsin)3/2pie

Like idk how to input this into my calculator, it makes a domain error, but i can reference it to a 0-2pie interval. I dont know how ,can anyone show me plz

2007-10-06 10:30:10 · 3 answers · asked by Anonymous in Mathematics

2007-10-06 10:28:12 · 7 answers · asked by Anonymous in Medicine

How many grams of phosphorus react with 36.4 L of O2 at STP to form tetraphosphorus decaoxide?

P4(s) + 5 O2(g) P4O10(s)

________g

2007-10-06 10:25:41 · 2 answers · asked by ronnie c 1 in Chemistry

A.)Lipids
B.)Proteins
C.)Amino Acids
D.)Nucleic Acids
E.)Carbohydrates

2007-10-06 10:20:30 · 3 answers · asked by mira 4 in Biology

1)Find the center, vertices, and foci for the ellipse: 4x^2+36y^2=144

2) Find the equation of a parabola with its vertex at the origin if its directrix is y = -5
[A] y=20x^2
[B] y= (1/20)x^2
[C] x= (1/20)y^2
[D] x= -5y^2

3) Identify the conic defined by the following equation: 36x^2 = 25-25y^2

4) Solve: x^2 + y^2=16,
((x^2)/4) - ((y^2)/9) = 1

Thank you!!! Any help at all is greatly appreciated!

2007-10-06 10:20:21 · 2 answers · asked by Anonymous in Mathematics

2007-10-06 10:20:20 · 5 answers · asked by Ab-bo 2 in Mathematics

why is mars hotter than the earth even though it is farther from the sun than earth. It makes no sense becuase shouldnt earth be hotter since its closer to the sun? just wondering kinda botherin me that i dont know this. thank you

2007-10-06 10:11:24 · 12 answers · asked by ur boy needo 2 in Astronomy & Space

I need to make soap. I need to know a recipe that says everything I need to know including the amount of ingredients, the materials, and how I will have to make the soap. The recipe should preferably have lye as an ingredient, but lye crystals are okay. Also, if you are going to give a link, don't give anything confusing. Also, can you say a place where lye can be bought in Rockford, Illinois? Thanks a lot!

2007-10-06 10:11:23 · 4 answers · asked by Black Fire 1 in Chemistry

789x654(divided by)4792+193=????

2007-10-06 10:08:20 · 4 answers · asked by Erik G 1 in Mathematics

PI's,I know what some of you think of yourselves, and my Q& A's.What about everyone else?Anyone ever call on a PI for help?How did you make out?Are the T-shirts any good?

2007-10-06 10:06:49 · 8 answers · asked by Dr. NG 7 in Paranormal Phenomena

2007-10-06 10:06:48 · 4 answers · asked by Anonymous in Chemistry