Science & Mathematics - 23 October 2006

capacitance is directly proportional to the surface area of the plates. dia. 22mm round to nearer hundreth square cm

2006-10-23 10:13:10 · 1 answers · asked by anthonyp 2 in Engineering

to an angular speed of 17.3 rad/s in 2.46 s. It started from rest.

A) What is the magnitude of the angular acceleration of the wheel in units of rad/s^2?

B) What is the angle in radians through which it rotate in this time (in units of rad)?

2006-10-23 10:12:35 · 1 answers · asked by Dee 4 in Physics

I know the basics, a tornado is a violent windstorm that comes from a mesocyclone.. right??? BUT HOW?

2006-10-23 10:12:06 · 8 answers · asked by Upon this rock 3 in Weather

Compute the derivate of Q(x)=2x^3, using the limit definition. just before you subsititue h=0, what expression are you taking the limit of/

2006-10-23 10:10:59 · 6 answers · asked by MJ 1 in Mathematics

1. the work done on the object is positive
2. the work done on the object is negative
3. the work done on the object depends on the magnitude and direction of the force
4. no work is done

2006-10-23 10:08:01 · 5 answers · asked by Foamy H 1 in Physics

2006-10-23 10:07:48 · 9 answers · asked by MJ 1 in Mathematics

why do some women have facial hair?

2006-10-23 10:07:40 · 7 answers · asked by realstylesint'l 5 in Biology

2006-10-23 10:06:55 · 4 answers · asked by Eric j 1 in Mathematics

2006-10-23 10:06:13 · 27 answers · asked by dirtbikedude 1 in Mathematics

2006-10-23 10:05:02 · 5 answers · asked by theophilus 5 in Astronomy & Space

how far away wold the moon be?

2006-10-23 10:04:42 · 7 answers · asked by Mean Mr Mustard 4 in Astronomy & Space

2006-10-23 10:03:23 · 8 answers · asked by Jessi 3 in Other - Science

a constant force is 150 n used to pull a box along a floor at a constant speed. the weight of the box is 450 N.
a) what is the upward perpendicular force exerted by the floor on the box?
b) what is the net force acting on the object if friction is 50 N.

2006-10-23 10:02:34 · 2 answers · asked by lincolngomes301 2 in Physics

Hey everyone,

For Chem class we're finding the empiricle formula for Barium Chloride Hydrate.

The following information is what I got in the lab.

Mass of crucible Lid -- 29.90 Grams Mass Curcible lid and hydrate -- 32.01 grams. Mass / crucible lid anhydrate after our 1st burning -- 31.69. And the second burning came up to 31.68 grams.

Our Chem teacher told us that we had to get the Mass of Hydrate and Anhydrate, and then find the moles of the Barium Chloride and Anhydrate? ((This is where I get confused)) Then we have to find the mol ratio of the two Barium chloride and Anhydrate?

We also have the Error Anlysis, which I know equals out to 2:1, since there are 2H2O in Barium Chloride. TH Theoretical yiled and the calculated observed mass should equal out to 2:1

Anyhelp would be greatly appreciated!!!

One confused Chem student

2006-10-23 10:01:49 · 2 answers · asked by Jordan M 1 in Chemistry

I already have William Ferrero and Cesare Lombroso.

2006-10-23 10:01:43 · 6 answers · asked by The Face 3 in Biology

a racing car moves at an average speed of 10 m/s for a total time of 90 s. calculate the total distance traveled by the car within that time.

2006-10-23 10:00:36 · 4 answers · asked by lincolngomes301 2 in Physics

Just how hot DOES sodium burn when it contacts water, as compared to more ordinary "household" burning materials such as oak wood, paraffin or vegetable oil, anthracite coal, etc.? Is it hot enough to have any effect on silica sand? I'm looking for comparative info for the sake of my fiction novel-writing. Also, will sodium still react with water if fine particles of it are held in suspension in any sort of liquid (that liquid itself possibly being something combustible) before water is introduced? I come up with ideas but don't understand enough chemical details to know if they'd work at all... :-)

2006-10-23 10:00:23 · 3 answers · asked by vermeil dragon 2 in Chemistry

there are 5 protons and the weight is 10, if that helps any.

2006-10-23 09:57:55 · 5 answers · asked by steve_scharein 2 in Chemistry

By what factor does an object's kinetic energy change if its speed is doubled? By what factor does its momentum change?

2006-10-23 09:54:46 · 3 answers · asked by AnnaQ 1 in Physics

2006-10-23 09:53:25 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2006-10-23 09:50:17 · 2 answers · asked by martin48732 1 in Mathematics

2006-10-23 09:49:19 · 6 answers · asked by martin48732 1 in Mathematics

1999, 2001, 2003, 2005

i have to write a pattern rule for this pattern.

thank you

2006-10-23 09:48:34 · 4 answers · asked by havingfun 4 in Mathematics

then what are its supplementary and complementary angles?

wth? it doesn't even define x...

does anyone know how to figure this problem out?

2006-10-23 09:46:07 · 2 answers · asked by 2 days after my B day :) 2 in Mathematics

2006-10-23 09:44:35 · 3 answers · asked by hottie684 1 in Geography

Describe the changes in kinetic energy and in gravitational potential energy.

2006-10-23 09:44:24 · 3 answers · asked by Anonymous in Physics

annuit coeptis?

novus ordo seclorum?

2006-10-23 09:42:09 · 9 answers · asked by dreamangel20051 2 in Other - Science

if the measure of angle ais 2y-10, then what would be its complimentary and supplementary angle?


I have no idea how to do a problem like this, because they don't even define y!!!!!

anyone know how to do this problem?





THANKYOU SO MUCH!!!!!!!!!!!!!!!!

2006-10-23 09:41:58 · 2 answers · asked by 2 days after my B day :) 2 in Mathematics

2006-10-23 09:39:59 · 3 answers · asked by lincolngomes301 2 in Physics

Scuffing the ball is considered cheating in baseball. The idea is that it makes the ball cruve more when a curveball is thrown. Is this effect for real, and is this because it gives the pitcher better grip? It seems to me that other than that , it woudl not make a major impact on the physics of the ball flight.
If anything it woudl only create more turblant airflow around the ball and make it curve less. am I wrong here?

2006-10-23 09:39:50 · 3 answers · asked by abcdefghijk 4 in Physics