Science & Mathematics - 11 January 2007

Serious and specific answer, thanks!!

2007-01-11 14:15:32 · 2 answers · asked by fade 3 in Chemistry

In the supermarket you return a cart to the cart area. You stand still and pushed the cart towards the other carts. You've just learned that the cart pushes back on you too, according to Newton's third law.

a) Explain why the carts moves and you do not.
Hint: Consider the cart and yourself separately. Also, consider all the forces acting on you and on the cart.

b) Which object is in equilibrium, you or the cart?

2007-01-11 14:15:06 · 5 answers · asked by Not Here 3 in Physics

2007-01-11 14:15:01 · 8 answers · asked by David G 1 in Mathematics

why are some leaves are called specialized leaves?

2007-01-11 14:12:25 · 2 answers · asked by alfa 1 in Botany

For each of the following:
H2O
HCI
NaCl
H2O
CuSO4
CHO
Why?

2007-01-11 14:12:11 · 5 answers · asked by Anonymous in Chemistry

Given the formula H2O, there is one molecule with 2 atoms of H and 1 atom of O. But, how many atoms and molecules would be in a hypothetical formula 4R? Are there 4 molecules and 4 atoms of R? Or are there 0 molecules are 4 atoms of R? Can someone give me an explanation?

2007-01-11 14:11:00 · 1 answers · asked by Anonymous in Chemistry

2007-01-11 14:10:24 · 15 answers · asked by carmel32 1 in Mathematics

PLEASE HELP ME!!!!!!!!!!!!!!!!!

2007-01-11 14:10:21 · 3 answers · asked by Rebecca A 1 in Chemistry

Does anyone have any information on the praying mantis(mantids) in Florida? Something strange is going on. Many were found dead by a friend on a walk home, all laying face up. January is not the right time of year for these creatures to be out and about as is and to find that many? Something strange is happening and I'd appreciate any help that can be given.

2007-01-11 14:10:07 · 5 answers · asked by Genevieve 2 in Paranormal Phenomena

I need an explation and if u found the info somewhere on the web, plz leave me the link....

2007-01-11 14:09:06 · 5 answers · asked by Jenhi 1 in Weather

2007-01-11 14:08:57 · 12 answers · asked by Anonymous in Mathematics

please walk make through these...

1/8=4^(6x-5)

and

log2 X + log2 (X+6) = 4

2007-01-11 14:08:57 · 3 answers · asked by qwerty123 1 in Mathematics

A bottle of wine contains 12.5% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality.

2007-01-11 14:06:58 · 1 answers · asked by Daniel N 2 in Chemistry

2007-01-11 14:05:36 · 13 answers · asked by David G 1 in Mathematics

2007-01-11 14:05:16 · 19 answers · asked by michelle0013 2 in Astronomy & Space

I need to find an instrument or a program that will display a graph of a sound in terms of pitch and time. One axis of the graph would span about 1 Hz and the other axis would cover anywhere from one tenth to one second. Anyone know where I could find such equipment/softwere, or if something like that is even available?

2007-01-11 14:02:04 · 2 answers · asked by Pianist d'Aurellius 4 in Other - Science

Solve for x.

4(x-2)^ -2 = 16


(x-2) has an exponent of -2.


I got x = 5/2

2007-01-11 14:02:03 · 2 answers · asked by Anonymous in Mathematics

wouldn't it make sense to also be able to travel through the fourth dimension of time? And, if we are moving through time, what set us in motion in the first place? Think about it...

2007-01-11 14:01:29 · 12 answers · asked by Siervocal 3 in Physics

Can someone show the steps and where I would graph this on the # line. Do I minus 2 from both sides? and dived 3 by both sides?

2007-01-11 14:01:21 · 5 answers · asked by theoneandonly4251 2 in Mathematics

2007-01-11 14:01:15 · 10 answers · asked by A.R 2 in Physics

Sea that borders the counrty India
Inland sea that borders Kazakhstan
Country in Europe thatborders Switerland and Germany
thanks so much!
-Luna♥

2007-01-11 14:00:11 · 3 answers · asked by luna.moonprincess 2 in Geography

ok i'm confused. if a person sleds down a hill and the sled's velocity is 7.0 m/s at the bottom of the hill, wouldn't that be final velocity?

how do you know when the final velocity is zero and when the initial velocity is zero???

2007-01-11 13:57:24 · 5 answers · asked by i like turtles 3 in Physics

2007-01-11 13:57:09 · 11 answers · asked by S K 1 in Astronomy & Space

question: The points (4,2) and (-1,y) are sqrt(74) units apart. What is the value of y?

p.s. sqrt(74) means square root of 74

i have no idea what so ever how to get this...and can you please show me the process so i can get the other ones.
thank you =]

2007-01-11 13:54:53 · 4 answers · asked by BUM 2 in Mathematics

2007-01-11 13:54:27 · 1 answers · asked by poly 1 in Chemistry

Y^-2Z^-4
_________
Y^3Z^-2
the ^ means its an exponent help please!!!

2007-01-11 13:53:44 · 7 answers · asked by love2figureskate 4 in Mathematics

do they get hurricanes

2007-01-11 13:53:14 · 8 answers · asked by Lee-Lee H 1 in Weather

????????????????

2007-01-11 13:53:00 · 3 answers · asked by Anonymous in Weather

A bicycle wheel is resting against a small step whose height is h=0.120 m. The weight and radius of the wheel are W=25.0 N and r=0.340 m. A horizontal force F is applied to the axle of the wheel. As the magnitude of F increases, there comes a time when the wheel begins to leave the ground. What is the magnitude of the force when this happens?

2007-01-11 13:52:40 · 2 answers · asked by Someone 1 in Physics

Please think from only a weather perspective, not Christmas etc.

2007-01-11 13:52:29 · 9 answers · asked by Anonymous in Weather