Science & Mathematics - 15 September 2007

2007-09-15 20:05:24 · 1 answers · asked by Anonymous in Chemistry

the known universe is about 156 billion light years across. can someone put that in miles? no exponents or light years simple one by one digits please.

2007-09-15 20:04:39 · 8 answers · asked by srgrod 2 in Astronomy & Space

hi. plz help me with these, extra credit for school and i desperately need them. Plz explain how to do them and give the direct answers as well. thanks in advance:

2) On a steam locomotive the piston that drives the train moves the length of the diameter of the wheel (3 feet). If the train is moving at 30 miles per hour, write the equation of the displacement of the piston as a function of time.

Amplitude=

Revolutions per minute=

Revolutions per second=

w/omega

Equation d=

What is the displacement of the piston after 4 seconds



4) A water wheel has a barrel attached to it. The wheel is pushed by a creek at a constant rate of 3 rpm. Express the height of the barrel as a function of time in seconds.

2007-09-15 19:46:47 · 1 answers · asked by garyeestra2 1 in Mathematics

2007-09-15 19:46:22 · 27 answers · asked by Alex P 1 in Zoology

Im workign on a magnetic motor and i need some help

2007-09-15 19:37:45 · 3 answers · asked by Anonymous in Engineering

please help me!!!
and give me url or urls with the information you have
or pictures

2007-09-15 19:34:18 · 2 answers · asked by ahjess_yim 1 in Engineering

2007-09-15 19:28:17 · 7 answers · asked by angel pants 2 in Biology

2007-09-15 19:27:09 · 10 answers · asked by Alex P 1 in Zoology

of a car is left running, and the car is not moving. The engine is on and thats it. Nobody's in the car, only the engine is left running. So my question to you is, how long does it take for the fuel to go from full to empty??? Example: 1 day, 1 week, 1 month.... I don't know you tell me. how long???

I'd really appreciate it if you can tell me how long will it take for the engine to stop running (going from full to empty).

The car is a 2007 Chevrolet Aveo, 1.6 litter L4 Engine, fuel injection automatic 4 speed transmission. EPA estimated MPG 26 city, 34 highway.

Click this link for more info about the car:
http://www.chevrolet.com/aveo/specificat...

2007-09-15 19:26:27 · 3 answers · asked by Anonymous in Physics

w many prime numbers are there between 50 and 90?

2007-09-15 19:24:13 · 4 answers · asked by Ben 1 in Mathematics

for my daughter of 12 years old

2007-09-15 19:21:12 · 2 answers · asked by raj j 1 in Mathematics

My local motor mecahnic told me that my SUZUKI OBM's stator needs replacing. But when I ask for it at the dealers desk, they say they don't know the name "stator" but "ignition coil". I am afraid I might buy a wrong thing altogether!

2007-09-15 19:17:21 · 2 answers · asked by Anonymous in Engineering

when determining the formula

2007-09-15 19:10:33 · 4 answers · asked by Anonymous in Chemistry

1. If 3x +3y + 16 = 40 and x + y = 8
What is x and what is y?

2. The original price of a tomato at local grocery store was decreased by 25%. By what percent must it be increased by to return to its original price?

3. Solve for x in for this equality written in words.
One over one plus (one plus x) over six over eight plus x over ten over eight minus x is equal to the sum of the first fifty integers minus the absolute value of negative six hundred fifty.

2007-09-15 19:10:12 · 6 answers · asked by Axis Flip 3 in Mathematics

could i connect a flyback transformer directly to an ac power supply instead of a 555?

2007-09-15 19:08:22 · 6 answers · asked by Alex 3 in Engineering

2007-09-15 19:06:27 · 4 answers · asked by j c 1 in Physics

2007-09-15 19:03:57 · 5 answers · asked by Anonymous in Weather

2007-09-15 19:02:18 · 2 answers · asked by Anonymous in Chemistry

2007-09-15 19:02:15 · 10 answers · asked by Anonymous in Weather

IN terms of viscosity??????

2007-09-15 18:57:43 · 1 answers · asked by Duna 2 in Physics

2007-09-15 18:54:46 · 7 answers · asked by Anonymous in Astronomy & Space

the expansion of the singularity, was nothing before that, and if so, what would be your thoughts on the meaning of "nothing"?

2007-09-15 18:49:14 · 6 answers · asked by Anonymous in Physics

If 28% of a sum is $100.80, what is the sum?

A. $129.02
B. $277.78

C. $282.24

D. $360.00

2007-09-15 18:46:31 · 4 answers · asked by Anonymous in Mathematics

what is a prefix? how are they used in science?

2007-09-15 18:46:11 · 2 answers · asked by Sarah S 3 in Other - Science

I found out that using the Universal Parallax, you can calculate the distances to other Universal Objects, such as Stars and Galaxies, calculation based on luminance,size and the escape velocity from an object going away from another object!
But, stars have different luminosity, the one star can be yellow brightness +10, while the other star is brightness +5. Also they are variable in colour, from yellow, red and blue, etc...
They also have different sizes, like the Sun is 1 and the i.e. Antares is +- 300!
The speed of an object such as a Star is influenced by i.e. another star. So the parallax speed varies from one to another!

So, my guess is that the Universal Parallax is not that all accurate, taking the above factors into consideration!

In the Universe there are variable speeds, various sizes and luminosities!

So, I believe we don't know the acual distances, but using the Parallax is more theoretical

2007-09-15 18:43:09 · 3 answers · asked by Anonymous in Astronomy & Space

Like how Wonderwoman can delflect bullets. Will you have enough time for a reaction?

2007-09-15 18:43:08 · 9 answers · asked by 0carina 4 in Astronomy & Space

a capacitor has the formula for its reactance as 1/(2*pie*frequency*capacitance).

according to this formula it blocks dc because dc has 0 frequency and allows ac because ac has some frequency.

but how does a capacitor physically perform this task,please reply.

2007-09-15 18:41:45 · 4 answers · asked by Anonymous in Engineering

And put and end to that stupid joke once and for all?

2007-09-15 18:36:52 · 6 answers · asked by stork5100 4 in Astronomy & Space

Help me it's algebra!

2007-09-15 18:35:34 · 4 answers · asked by Anonymous in Mathematics

I want to know it badly..!

2007-09-15 18:24:05 · 8 answers · asked by Kelly X 1 in Astronomy & Space