Science & Mathematics - 6 February 2007

2007-02-06 06:24:54 · 17 answers · asked by JOHN Y 2 in Astronomy & Space

2007-02-06 06:23:48 · 2 answers · asked by goring 6 in Weather

The science fair is coming up soon and I want an expiriment that will turn heads. Any ideas?

2007-02-06 06:22:36 · 4 answers · asked by Anonymous in Other - Science

It has to be related to chemistry.....it can't be an experiment that can be considered a biological experiment or a psychological experiment.

2007-02-06 06:20:57 · 10 answers · asked by Anonymous in Chemistry

2007-02-06 06:20:07 · 2 answers · asked by weter boy 1 in Earth Sciences & Geology

(click the link to see the circuit)
http://www.geocities.com/martin_pc_maintenance/img009
With what I have now, you plug anything into the plug on the circuit. The circuit plugs into a wall outlet.
When you press the switch, the power does not go to the device plugged into the circuit. When you let go of the switch, it lets power back through.

What I want it to do is:
when you push the button, power is not let into the device, turning it off.
when you let go, nothing happens.
I want power to be restored to the device when the switch is pressed and released a second time.

Is this possable?

2007-02-06 06:19:23 · 3 answers · asked by martin_pc_maintenance 3 in Engineering

and why?

2007-02-06 06:18:10 · 2 answers · asked by j a 1 in Earth Sciences & Geology

Evaluate the integral from -pi (lower bound) to pi (upper bound)

cos x/(4+3sinx)^1/2 dx

any help would be much appreciated

2007-02-06 06:18:02 · 3 answers · asked by lpfanz89 1 in Mathematics

2007-02-06 06:15:47 · 4 answers · asked by Connie L 1 in Physics

2007-02-06 06:15:39 · 5 answers · asked by goring 6 in Astronomy & Space

What is the difference between direct frequency response and transformer frequency response? Also, what is RPO? Specs show distortion less than 2 % at RPO, 600 - 13,000 HZ.

2007-02-06 06:14:05 · 1 answers · asked by shaffy08 2 in Engineering

My grandad showed me a neat trick with a fly drown it untill dead then put it on a pile of salt and it comes back to life ,now thats magic!!"!

2007-02-06 06:13:35 · 8 answers · asked by cotsey 1 in Biology

Evaluate the integral
preferably using u substitution

"Integral symbol" sec^2 (3x-2) dx

thanks for the help

2007-02-06 06:13:24 · 2 answers · asked by lpfanz89 1 in Mathematics

Fred said that only the states of AL MS GA TN LA are called the south part of america, maybe also include VA NC and SC. What about TX and FL and so on? Can I say they are also in the south?

2007-02-06 06:13:23 · 8 answers · asked by ? 1 in Geography

2007-02-06 06:11:02 · 6 answers · asked by Anonymous in Medicine

Okay heres the directions: find the slope of the tangent line to the graph of each funion at the given point and deermine an equation of the tangent line.

here's the problems were told to do

f(x)=2x+7 at (2, 11)

f(x)=-3x+4 at (-1, 7)

f(x)=3x^2 at (1,3)

f(x)=-1/x at (3, -1/3)

I dunno how to do this. Help me please.

2007-02-06 06:10:29 · 3 answers · asked by packerswes4 5 in Mathematics

My grandad also showed me a neat trick with a fly drown it untill dead then put it on a pile of salt and it comes back to life ,now thats magic!!"!

2007-02-06 06:10:14 · 11 answers · asked by cotsey 1 in Zoology

2007-02-06 06:08:18 · 2 answers · asked by chelsea l 1 in Chemistry

|8x-4|+4=15

2007-02-06 06:07:54 · 9 answers · asked by SphinxEyez999 2 in Mathematics

How do i solve this problem. I've been trying to figure it out for the longest time i don't understand it! Please explain to me how to do this!

"An object has a mass of 2kg. It is being swung in a circular path. The speed of the mass is 2m/sec.

-A. What is the force applied to keep the object moving in a circular path?
B. What is the period of rotation?
C. What is the centripetal acceleration of the mass.

***How do i solve this problem?***
please help!

2007-02-06 06:07:39 · 1 answers · asked by pantherkick07 1 in Physics

2007-02-06 06:07:05 · 3 answers · asked by goring 6 in Astronomy & Space

2007-02-06 06:06:46 · 2 answers · asked by Anonymous in Mathematics

2007-02-06 06:06:41 · 5 answers · asked by Anonymous in Astronomy & Space

2007-02-06 06:05:42 · 8 answers · asked by Joe P 1 in Biology

2007-02-06 06:04:07 · 20 answers · asked by mrlovepantsuk67 1 in Chemistry

2007-02-06 06:03:12 · 6 answers · asked by TKBP 1 in Weather

I ask this last week and didn't get an answer.

2007-02-06 06:02:48 · 9 answers · asked by Anonymous in Mathematics

2007-02-06 06:02:34 · 1 answers · asked by ankan l 1 in Physics

Ok. I know that to be a mineral it must be inorganic (not coming from a living thing).

BUT heres where I'm confused - don't diamonds come from coal which is not a mineral because it came from the remains of plants long ago. SO - how can diamonds be a mineral if they come from something organic??

Can someone explain please?

2007-02-06 06:01:32 · 7 answers · asked by jmwest 3 in Other - Science

We are looking at a 20' tall tower with three parallel sides. (perpendicular to the ground) The angled front face is @ 81 degrees. The upper portion of our tower is 5' x 3’ with its base measuring 2' x 3'. The center of gravity is out side of this base and it will tip over. How do I determine the amount of force required to prevent this. (Currently, two steel feet, connected to the towers base, are meant to prevent its tipping. I believe that due to the weight of each of the eight panels [50lbs each] and the degree to which the front face is angled, that the feet will not be sufficient to prevent its tipping unless additional weight is added to each footing) Please Advise

2007-02-06 06:01:15 · 1 answers · asked by ALH 1 in Physics