Science & Mathematics - 26 November 2006

I am having a hard time figureing out what is going on with my math homework and my text book is not with me. Dose anyone know where I can find help with questions like this solve for b...a=1/2bc>to the ssecond power.

2006-11-26 07:32:47 · 4 answers · asked by Jeff D 1 in Mathematics

2006-11-26 07:31:59 · 3 answers · asked by PauL M 1 in Biology

What benifit is it that women do not grow beards, but men do?

2006-11-26 07:30:57 · 10 answers · asked by Anonymous in Biology

2006-11-26 07:30:57 · 9 answers · asked by elniemaa 1 in Geography

A manufacture sells a certain article to dealers at a rate of $20 each , if less than 50 are ordered. If 50 or more are ordered (up to 600) the price per article is reduced at a rate of 2 cents times the number ordered. What size order will maximize revenue?

2006-11-26 07:27:41 · 2 answers · asked by Blesson 2 in Mathematics

2006-11-26 07:27:01 · 7 answers · asked by Disco Duck 2 in Other - Science

2006-11-26 07:26:03 · 12 answers · asked by thomas O 1 in Zoology

2006-11-26 07:25:31 · 6 answers · asked by NIGHTHAWK 1 in Mathematics

A sled starts from rest at the top of a hemispherical frictionless hill of radius R. (Actually
you can assume the sled has a very small velocity when at the top. This velocity is sufficient
to start the sled, but can be neglected for the rest of the calculations.)
(a) Use conservation of mechanical energy (plus a bit of trigonometry) to find an expression
for the sled’s speed when it is at angle .
(b) Use Newton’s 2nd law and ideas of circular motion to find the maximum speed the sled
can have at angle without leaving the surface. (Hint: the maximum speed is that at
which the normal force becomes zero.)
(c) Combine the results of (a) and (b) to find the numerical value of the angle max at which
the sled flies off the hill. This angle is independent of the mass of the sled, radius of the
hill, or the local value of g.

2006-11-26 07:24:20 · 1 answers · asked by arvin k 1 in Physics

If someone could please help me answer this with the steps so I can learn how to write this out I will give you best answer, and a virtual hug, lol.

The sum of the base and the height of a parallelogram is 69 cm. Find the dimensions for which the area is a maximum.

2006-11-26 07:23:52 · 8 answers · asked by Lumpy 2 in Mathematics

a particle is moving along the cure y = x ^ 1/2 ,where y and x are measured in cm.as the particle passes through the point (4,2).its x-coordinate is incearsing art rate of 3 cm/s.how fast the particle`s distance from the orgin changing as this instance?

2006-11-26 07:22:59 · 3 answers · asked by M R 1 in Mathematics

lim h(x) =
x=>-oo

2006-11-26 07:22:34 · 2 answers · asked by chris 2 in Mathematics

2006-11-26 07:22:25 · 30 answers · asked by Anonymous in Mathematics

I am doing a 2nd graders science project i thought maybe the name should be What Is The Solar System? But what would be my procedures and experiment

2006-11-26 07:22:05 · 5 answers · asked by mz.j 1 in Astronomy & Space

2006-11-26 07:20:49 · 5 answers · asked by Alex R 1 in Medicine

(2pq²)(-3p²q)²

2006-11-26 07:20:48 · 1 answers · asked by Anonymous in Mathematics

2006-11-26 07:20:02 · 2 answers · asked by Mary H 2 in Earth Sciences & Geology

And what causes it to come to an end?

2006-11-26 07:19:40 · 5 answers · asked by Anonymous in Weather

This is earth science. I'm needing some help. Give me the answers!

2006-11-26 07:16:51 · 3 answers · asked by Anonymous in Earth Sciences & Geology

A bear that weighs 4000 newtons grasps a vertical tree and slides down at constant velocity. What is the friction force that acts on the bear?

A crate remains at rest on a factory floor while you push on it with a horizontal force F, how big is the friction force exerted on the crate by the floor?

A parachutist, after opening the chute, finds herself gently floating downwardm no longer gaining speed. She feels the upward pull of her harness, while gravity pulls her down. Which of these two forces are greater? Or, could they be equal in magnitude?

2006-11-26 07:15:48 · 3 answers · asked by choddy 1 in Physics

Why does someone believe you when you say there are four billion stars, but check when you say the paint is wet?

2006-11-26 07:15:42 · 8 answers · asked by Broken_Inside 1 in Astronomy & Space

My question is how will I make the gravity racer more aerodynamic. The things about the race is for around 1 meter, the car will go down an incline and for the rest of the race it will go on a flat surface. Any suggestions about what I can do with how I assemble the wheels or cutting the wood in a particular shape or even decreasing the affects of air resistance. The answer I use regardless of how I finish will receive ten points.

2006-11-26 07:15:12 · 2 answers · asked by Anonymous in Physics

Any store i can go to 2 get a styrofoam ball...I need it 2 do an animal cell

2006-11-26 07:15:03 · 6 answers · asked by Salvador 2 in Biology

9k² - 25b²

2006-11-26 07:13:29 · 5 answers · asked by Anonymous in Mathematics

2006-11-26 07:12:51 · 8 answers · asked by gigglewabbit 1 in Weather

2006-11-26 07:12:01 · 12 answers · asked by twinklesbecca 1 in Botany

According to the Farmes almanac there is supposed to be a big snow storm for the ohio area...anyone think this will happen?
I am sooooo ready for snow! (as long as I do not have to drive in it)

2006-11-26 07:11:02 · 1 answers · asked by Em W. 4 in Weather

2006-11-26 07:09:36 · 21 answers · asked by The Global Geezer 7 in Biology

Okay... Here goes...

A ski trip at the school has been arranged. 30 students and 6 parents are to attend. The buses are being split up into oen group of 10 students with 2 parents and 20 students with 4 parents.


a) How many different groups of 10 Students can be formed.

So I did n=30 r=10.... 30 P 10 = 30!/(30-10)! And got 1.1 x 10 ^14

b) How many different groups of 10 students with 2 parents are possible?

So I have my 1.1x10^14 and figured out there are 30 ways the parents can be arranged....

So my question is do I add 1.1x10^14 to 30 or do I multiply them?

2006-11-26 07:09:13 · 6 answers · asked by gg 4 in Mathematics

A massless spring of spring constant k=78.4 N/m is fixed on the left side of a level track. A block of mass m=0.5 kg is pressed against the spring and compresses it a distance of d. The block (initially at rest) is then released and travels toward a circular loop-the-loop of radius R=1.5 m. The entire track and the loop-the-loop are frictionless except for the section of track between A and B. Given that the coefficient of kinetic friction between the block and the track along AB is u=0.30, and that the length of AB is 2.5 m, determine the minimum compression, d, of the spring that enables the block to just make it through the loop-the-loop at point C. (Hint: the force of the track on the block will be zero if the block barely makes it through the loop-the-loop).

for the diagram for this problem, please go to http://i3.photobucket.com/albums/y92/musicis4fools2/physicsdiagram.jpg

THANKS!

2006-11-26 07:07:57 · 1 answers · asked by graycl0ud 1 in Physics