Science & Mathematics - 21 October 2006

AC pushes you away,I have heard
and DC ,we stick to the source,where we touch

2006-10-21 06:34:50 · 6 answers · asked by Aq 3 in Physics

I know there will be different heights when the rain clouds are heavier but is there a average height that a rain drop falls from?

2006-10-21 06:33:44 · 8 answers · asked by Anonymous in Weather

in what direction does the earth rotate?
east to west
west to east
north 2 south
or
south 2 north

2006-10-21 06:33:42 · 3 answers · asked by Anonymous in Earth Sciences & Geology

2006-10-21 06:31:30 · 10 answers · asked by Brenda K 1 in Chemistry

An architect wants to feature 100 feet square oval windows on the corporate headquarters of a large company. Each window will be in four sections - 2 semicircles and 2 rectangles with gold strips separating the glass sections and around the outside border. What values for a and b will require the shortest length of golden stripes?

2006-10-21 06:29:45 · 3 answers · asked by ? 1 in Mathematics

2006-10-21 06:29:15 · 2 answers · asked by aape1122_aape1122 1 in Engineering

i need the mathematical formula to convert amperage into ft lbs of torque

2006-10-21 06:25:28 · 3 answers · asked by CLAYTON B 1 in Physics

Is it water, co2, or a combination of both?

2006-10-21 06:18:07 · 4 answers · asked by R.B. #1 2 in Astronomy & Space

2006-10-21 06:17:12 · 22 answers · asked by connie 1 in Astronomy & Space

http://i21.photobucket.com/albums/b272/Cajunboiler/06_45.gif

A water slide is constructed so that swimmers, starting from rest at the top of the slide, leave the end of the slide traveling horizontally. As the drawing shows, one person hits the water 5.00 m from the end of the slide in a time of 0.500 s after leaving the slide. Ignoring friction and air resistance, find the height H in the drawing in meters.

Now, I know this has to do with the conservation of mechanical energy. For this problem, I think it should be mg(ho) = .5m(vf)^2

Now... I'm thinking I need to use kinematics to find vf but I'm confused on which equation to use.

If this is not how to work it, the please explain it to me where I went wrong.

2006-10-21 06:14:23 · 3 answers · asked by Confused 1 in Physics

2006-10-21 06:11:35 · 10 answers · asked by Anonymous in Mathematics

Just tell me anything about brain surgery ... Please!!!! It's not urgent but I'd like to know!

2006-10-21 06:10:25 · 14 answers · asked by geode_diamond_soul 1 in Other - Science

I do not understand what exactly microRNA and RNA interference are. It seems too complicated in the text book...can someone explain this to me very simply.

2006-10-21 06:07:36 · 3 answers · asked by ๑The Goddess๑ 3 in Biology

Why, oh, why is the troposphere not as high at the poles. At the poles it only extends to 7km, but at the equator it goes to 17km. WHY?!!!!! I tried to look it up but I couldnt figure it out. NO GUESSES I want someone who knows FOR SURE!

2006-10-21 06:06:54 · 8 answers · asked by terra_chan 4 in Other - Science

when woman expect there period, are we supose to wait till a big red stain comes in our crotch and wait for someone to say "you got a red crotch" or are we supose to sit on the toilet waiting for blood to drip from our vaginas?

2006-10-21 06:06:50 · 7 answers · asked by Vancouver Island Marmot 1 in Other - Science

The sap from cactus is it poisonous?

2006-10-21 06:01:39 · 7 answers · asked by untanuta 5 in Botany

where can i find detailed info on characteristics and properties of a bipolar junction transistor on the net?

2006-10-21 06:01:30 · 10 answers · asked by lose control 2 in Engineering

2006-10-21 05:59:38 · 4 answers · asked by Anonymous in Biology

2006-10-21 05:50:13 · 16 answers · asked by heinrichs3 3 in Astronomy & Space

the cost is proportional 2 d area of d aluminium sheet.d volume tat each tin can hold is 1000cm3 (1liter)....tat my project work...waiting a genius 2 help me!!!
1)determine d value of h,r and hence calculate d ratio of h/r when d total surface area of each tin is minimum.here,hcm denotes d height n rcm d radius of d tin.

2006-10-21 05:49:36 · 3 answers · asked by red devil 4 in Mathematics

the cost is proportional 2 d area of d aluminium sheet.d volume tat each tin can hold is 1000cm3 (1liter)....tat my project work...waiting a genius 2 help me!!!
1)determine d value of h,r and hence calculate d ratio of h/r when d total surface area of each tin is minimum.here,hcm denotes d height n rcm d radius of d tin.

2006-10-21 05:47:54 · 1 answers · asked by red devil 4 in Mathematics

2006-10-21 05:46:32 · 1 answers · asked by curious 2 in Biology

2006-10-21 05:44:50 · 8 answers · asked by chaunceyd06 1 in Other - Science

A projectile of mass 0.900 kg is shot straight up with an initial speed of 22.0 m/s.

(a) How high would it go if there were no air friction?

I got this right with 24.7 meters

(b) If the projectile rises to a maximum height of only 16.5 m, determine the magnitude of the average force due to air resistance.

I'm not exactly sure how to calculate the air resistance. Can someone help?

2006-10-21 05:41:17 · 5 answers · asked by Confused 1 in Physics

for the sky to catch fire?

Seriously... I'm sure I heard it on the news once but it might have been a dream... I'm not sure...!

2006-10-21 05:39:21 · 8 answers · asked by DJ Fizzy xx 4 in Earth Sciences & Geology

2006-10-21 05:38:18 · 4 answers · asked by Anonymous in Biology

I had a dream that my boyfriend ask me to marry him. Does this mean anything. Can it be a good sign that i migth marry him soon.

2006-10-21 05:36:28 · 12 answers · asked by needanswers 3 in Astronomy & Space

2006-10-21 05:35:33 · 4 answers · asked by babbsie_101 2 in Biology

2006-10-21 05:34:15 · 27 answers · asked by Anonymous in Other - Science

The troposphere only extends to about 7km at the poles, yet it goes as high as 17 km at the equator. Why? and please make it so I can understand I am a fairly smart 13 year old, but I will be confused if you use a load of scientific terms

2006-10-21 05:34:12 · 2 answers · asked by terra_chan 4 in Astronomy & Space