Science & Mathematics - 5 February 2007

2007-02-05 18:00:57 · 3 answers · asked by shygirl 1 in Chemistry

This is a Pre-calculus problem. please show work. Thank you

2007-02-05 17:59:39 · 3 answers · asked by Anonymous in Mathematics

2007-02-05 17:58:21 · 4 answers · asked by roxanne a 1 in Chemistry

2. The circumference of a circle is 3.14 units. What is the radius of this circle?

3. The radius of a circle is 7/22 units. Find its circumference.

4. A central angle of a circle is an angle whose vertex is the center of a circle. A 90 degree angle intersects an arc of the circle that has a length that is 1/4 the circumference. Find the length of the arc intersected by a 145 degree central angle of a circle that has a diameter of 8 feet.

2007-02-05 17:57:59 · 6 answers · asked by Anonymous in Mathematics

2007-02-05 17:55:58 · 2 answers · asked by amazing_sweet_angel 1 in Chemistry

having a cylindrical tube of 1.5 meters length and 0.5 meters in diameter

2007-02-05 17:55:05 · 5 answers · asked by ahleks 2 in Mathematics

2007-02-05 17:53:40 · 3 answers · asked by amazing_sweet_angel 1 in Chemistry

I ve heard of this telescope thats electronic. In its memory are stored about 4000 space objects and when asked it will automatically point to them! You basically need to just enter your country coordinates and its ready to go.

Anyone has one of these? Whats it called?

2007-02-05 17:52:12 · 5 answers · asked by sh 1 in Astronomy & Space

What is the greatest possible area of a triangular region with one vertex at the center of the circle of radius 1 and other 2 vertices on the circle.
The ans I have is 1/2 . Pls can anyone solve this.

2007-02-05 17:51:54 · 3 answers · asked by rajagopal r 1 in Mathematics

2007-02-05 17:51:07 · 6 answers · asked by Anonymous in Mathematics

It's not a defribulator. It's a small device with two adhesive pads that can be placed anywhere on the body to artificially fatigue a muscle or muscles with the use of electricity. It usually has a control dial for each pad with a setting of 1-10.

2007-02-05 17:50:40 · 7 answers · asked by Ryan T 1 in Medicine

2007-02-05 17:50:33 · 8 answers · asked by ahleks 2 in Mathematics

What do you call the "tube-like process" in bones where blood vessels are allowed to pass?

2007-02-05 17:46:26 · 3 answers · asked by Hefeweizen 7 in Biology

Could a silicon-based life form actually exist? Why or Why not?
Someone please help me out this question is due by Wednesday at 10am!! Thanks

2007-02-05 17:45:20 · 4 answers · asked by Anonymous in Chemistry

(x^2 - 4x +3) / (root of x-3)

2007-02-05 17:44:27 · 6 answers · asked by fazzybadger 1 in Mathematics

How enzymes react with substrate to form a product? what are its characteristics?

Pls. explain it briefly.. I need it for tomorrow... : )

2007-02-05 17:42:19 · 1 answers · asked by innocentgenius 1 in Chemistry

2007-02-05 17:41:59 · 3 answers · asked by Duncan F 1 in Chemistry

knowing the circumference in meters how do you compute number of square meters of the area.

2007-02-05 17:40:44 · 6 answers · asked by Sany 1 in Mathematics

by action i mean the process in which auxin exibit apical dominance

2007-02-05 17:36:27 · 1 answers · asked by fasinatingmarc 1 in Botany

I need to buy a DC to AC power inverter. Which type should I buy?

2007-02-05 17:34:31 · 2 answers · asked by will m 1 in Physics

12 billion years back big occured. then unverse size was very small but expansion rate was deffinattly less then speed of light then how the radiation that we are reciveing now are reaching us now . because they should have crossed us by now should be out side the universe pretty for away ( hint:- Can anthing go out of universe).

2007-02-05 17:33:16 · 10 answers · asked by Dr Umesh Bilagi 2 in Astronomy & Space

14. A car with a mass of 1,200 kilograms is moving around a circular curve at a uniform velocity of 20 meters per second. The centripetal force on the car is 6,000 newtons. What is the radius of the curve?
A. 160 meters
B. 80 meters
C. 32 meters
D. 16 meters

2007-02-05 17:31:59 · 4 answers · asked by Blaze T 2 in Mathematics

hi, what do you think has greatest medical discovery of the last 100 years and why? Some people say the discovery of DNA...why is this considered so vital in modern medicine?

2007-02-05 17:31:21 · 13 answers · asked by kath r 1 in Medicine

Wilcoxon Rank Sum Test raw scores group 1: 3 6 5 8 9 8 4 group 2: 7 2 4 10 7 6 1 what are the rank scores ? what are the n1, n2 values for this problem? if alpha is set at .05 what is the tabled value? is it significant?

2007-02-05 17:30:44 · 1 answers · asked by Anonymous in Mathematics

How many total moles of ions are released when the following sample dissolves completely in water?
26 g Ba(OH)2.8H2O

2007-02-05 17:30:00 · 1 answers · asked by socr8711 2 in Chemistry

2007-02-05 17:29:37 · 2 answers · asked by Edmond 1 in Earth Sciences & Geology

The fall equinox occurs on or about Sep 22. Equinox meaning, "equal night", and this day is defined to have 12 hrs of day light and 12 hrs of darkness. However, consulting the sunrise and sunset data for this day, sunrise is 640AM and the sunset is at 648pm! Why aren't the sunrise and sunset times identical, or better yet, why is daylight longer than 12 hrs???

2007-02-05 17:28:28 · 2 answers · asked by amanda 2 in Earth Sciences & Geology

how many atomic number?
how many atomic mass?
how many electrical charge?

2007-02-05 17:26:56 · 6 answers · asked by leonard 1 in Chemistry

Because according to some articles, this concept is false. According to them, the main objective of science is to develop the students' thinking skills so that htey can understand the world qround them, and not to make the students to memorize concepts in science. What can you say about this?

2007-02-05 17:26:33 · 6 answers · asked by ARBEN A 1 in Other - Science

I need to buy a DC to AC power inverter. Which type ahould I buy?

2007-02-05 17:24:51 · 2 answers · asked by will m 1 in Physics