Science & Mathematics - 10 September 2007

A spherical ball is placed on a plane surface inclined
at θ to the horizontal. Determine the linear
acceleration of the center of the sphere down the
incline if:
1) θ = 40 degrees
2) θ = 50 degrees

Coefficient of static friction, μs = 0.3
Coefficient of kinetic friciton, μk = 0.2
Mass moment of inertia of a sphere, J = 2/5 m*R^2

2007-09-10 01:55:36 · 4 answers · asked by Dr D 7 in Physics

2007-09-10 01:53:15 · 5 answers · asked by Anonymous in Mathematics

2007-09-10 01:51:46 · 19 answers · asked by Anonymous in Earth Sciences & Geology

Ok I am not looking for the answer I am just trying to figure out how to set up this problem so that I can find the answer so if you can please help I would greatly appreciate it!.......here is the problem.....a farmer wants to create a play space for his pet goats by enclosing a rectangle of land with a fence and then dividing it down the middle with another type of fence. the outer perimeter fence will cost $10 per foot and the fence across the rectangle (that divides the area into two parts) costs $5 per foot. find the dimensions of the rectangle that ives the largest amount of play space for $2006 worth of fencing, determine how much play space the farmer will have created

2007-09-10 01:45:14 · 2 answers · asked by Short and Sweet 2 in Mathematics

2007-09-10 01:41:54 · 10 answers · asked by mr_lova_1000 1 in Engineering

2007-09-10 01:41:02 · 7 answers · asked by cecilia34581 2 in Mathematics

why? why not?

2007-09-10 01:36:30 · 8 answers · asked by We don't fight fair. 1 in Physics

1.) find the number of terms in the given Arithmethic Progression
-3,-11,-19,-27,.....,-115

2.)Three terms are in Arithmetic progression. If their sum is 21 and the sum of their squares is 149, what are the numbers?

3.) find S(sub)15 in Arithmethic progression 1,-7, -15,...,-111

hope you could help me with these...
I need your answers to verify my answers..I ll also try solving these...pls include ur solution!

that would be greatly appreciated!

2007-09-10 01:34:20 · 2 answers · asked by Anonymous in Mathematics

512 35,615 885,326,251 0.00040 0.01001

2007-09-10 01:31:39 · 2 answers · asked by justyn b 1 in Chemistry

2007-09-10 01:31:14 · 13 answers · asked by kenneth j 1 in Mathematics

Designer babies are defined as works of biotechnical engineering and customizing genes of an embryo in order to create a "perfect" baby. Right now it's an illegal practice, but they say that designer babies are bound to become a legal reality in about two decades...

What are your views? Are you for or against the creation of "perfect" babies by tweaking a few genes? Explain why if you can :)

thanks!

2007-09-10 01:16:03 · 8 answers · asked by satin_rust 2 in Biology

2007-09-10 01:15:53 · 7 answers · asked by Anonymous in Mathematics

2007-09-10 01:12:00 · 4 answers · asked by JOE L 1 in Engineering

2007-09-10 00:58:12 · 19 answers · asked by Anonymous in Medicine

2007-09-10 00:57:00 · 6 answers · asked by nutshell 1 in Weather

that is like one dimension ,two dimension three dimension etc etc like wise in which dimension we are living?

2007-09-10 00:54:08 · 4 answers · asked by Anonymous in Physics

Typically many cape verde type hurricanes tend to make around 2 to 3 landfalls. But for ANY hurricane/storm, what is the most number of landfalls a single storm has made?

2007-09-10 00:53:51 · 2 answers · asked by toulouse_jet 1 in Weather

Can anyone give me situations/world problems involving linear functions and how to solve them?

2007-09-10 00:53:44 · 3 answers · asked by Anonymous in Mathematics

1)Prove that a gas is given off by plants during photosynthesis.
2) Determine the color of light most favorable for photosynthesis.

2007-09-10 00:45:01 · 2 answers · asked by shadowfaerie 2 in Biology

The plane kx - y + jz + 2 = 0 where k and j are constants intersect the point (2,0,3) and is parallell with the vector (1,-2,2). Determine the equation of the plane.

2007-09-10 00:43:07 · 3 answers · asked by Anonymous in Mathematics

okay so scientists have taught that the earth was all together ,(all of the continents, ) and thats why they have the structure they have, but somehow im not agreeing with this , if in fact there was an earthquake, shouldn't it be more tore up instead of looking like a puzzle ? the earth shifts all the time , bringing the continents closer , so when they collide , would it not be easier for them to form into each other .

2007-09-10 00:42:03 · 7 answers · asked by delana 4 in Geography

2007-09-10 00:40:54 · 6 answers · asked by lukydb 2 in Geography

explain..

2007-09-10 00:38:34 · 5 answers · asked by We don't fight fair. 1 in Physics

1) x+y=-8
2) 2x-4y=8
your answers are very helpful I can not figure these out on a graph.

2007-09-10 00:34:31 · 7 answers · asked by sugar lady 1 in Mathematics

Trisection of an angle

2007-09-10 00:26:10 · 5 answers · asked by Nipun M 1 in Mathematics

or are there so many eggs,no chance of that?

2007-09-10 00:16:25 · 21 answers · asked by I dont know 4 in Zoology