Science & Mathematics - 3 December 2007

Find the vertex, focus, and directrix of the parabola and sketch its graph:
y + 12x - 2x^2 = 16

2007-12-03 11:43:49 · 2 answers · asked by Anonymous in Mathematics

with and 18" piece of wire.

2007-12-03 11:39:03 · 2 answers · asked by Josh A 1 in Mathematics

READ YOUR BOOKS!

2007-12-03 11:35:35 · 11 answers · asked by rtforkids 4 in Biology

it has to be from the zebras point of view

2007-12-03 11:33:31 · 2 answers · asked by Anonymous in Zoology

Ok, I'm at a loss for how to figure this out.

There's a rope and pulley system with two blocks. The first block (M1) is attached to a rope above the ground. The second (M2) is on a ramp incline.

Ramp angle is at 20º
Ramp is high enough for M1 to fall 4 meters before hitting ground.
Mass M2 is 100 kg

Static coefficients of M2 are:
Static friction = 0.35
Kinetic friction = 0.30.

Also assume we have an "ideal" rope (no mass and doesn't stretch) and "ideal" pulley (no mass or friction).

So, my question: What does the mass of M1 have to be in order for M2 to move up the ramp? In addition, what is the velocity of M2 when M1 hits the ground?

Equations, descriptions, ANYTHING will help at this point. Thanks!

2007-12-03 11:29:39 · 1 answers · asked by Anonymous in Physics

In peas, round (R) seeds are dominant over wrinkled (r) and tall (T) stems are dominant over dwarf (t). All tall plant with round seeds was bred with a tall plant with wrinkled seeds and the following offspring were produced: 150 tall round and 50 dwarf round. What are the genotypes of the parents?

2007-12-03 11:28:36 · 4 answers · asked by Vanessa N 1 in Biology

The dots have to be in 3x3 format.
O O O
O O O
O O O
HELP ME PLZ!!

2007-12-03 11:27:49 · 5 answers · asked by choco6985 2 in Mathematics

I have a 30-60-90 triangle and i need to find the area in simple radical form. It has a hyp of 2radical(6) and short leg is radical(6) and the long leg is radical(18). Can anyone help me...

2007-12-03 11:27:36 · 10 answers · asked by lusius188 1 in Mathematics

given mass of the earth,moon and the distance between the earth and the moon as 3.8*10^8.....

2007-12-03 11:25:16 · 1 answers · asked by lp342 4 in Physics

2007-12-03 11:24:38 · 3 answers · asked by Jio O 1 in Earth Sciences & Geology

2007-12-03 11:21:33 · 3 answers · asked by David H 2 in Astronomy & Space

Please help im desperate!

2007-12-03 11:21:32 · 5 answers · asked by Debbie M 1 in Zoology

Answer if you actually know the answer and please dont give an uneducated answer

2007-12-03 11:19:41 · 2 answers · asked by Anonymous in Weather

Always in pictures you see the side of the moon with the face on.

Why!?

2007-12-03 11:17:24 · 14 answers · asked by Anonymous in Astronomy & Space

2007-12-03 11:15:44 · 20 answers · asked by Michelle 2 in Medicine

Since gravity pulls you down. So the object in Earth's orbit is trapped there because gravity is pulling it toward the center of the planet. Right???????????????????????????????????

2007-12-03 11:14:41 · 2 answers · asked by sam007mama 1 in Physics

2007-12-03 11:13:47 · 8 answers · asked by 23zer00 1 in Mathematics

I work as a bartender and one day when we were cleaning up i went to catch an empty glass of water which was in normal temperature dry and just sitting there just when my pointer finger reached about 1/2 cm from the edge of the glass the glass exploded,not just broken, like you have shot it with a gun.
I noticed that my hand was loose and my mind clear.I heard somewhere for mind power but it happened accidently and i don't know for sure or specific things.I want to know what does this means why it happened accidently and if i can do it again.

2007-12-03 11:13:29 · 12 answers · asked by vasilis27107 1 in Paranormal Phenomena

please do the same with 10 lb 20lb 6ft and 7 ft

2007-12-03 11:11:29 · 3 answers · asked by ShortCircuit 2 in Physics

A tire contains air at a gauge pressure of 33.8 lb/in^2 at a temperature of 30.9 C. After nightfall, the temperature drops to -12.9 C. Find the new gauge pressure in the tire, assuming that the volume of the tire remains constant during this process in units of lb/in^2.

1 atm=14.7 lb/in^2

2007-12-03 11:10:41 · 1 answers · asked by snow200098 2 in Physics

2007-12-03 11:08:50 · 7 answers · asked by aemfh1 1 in Astronomy & Space

2007-12-03 11:08:24 · 1 answers · asked by geni 1 in Biology

before you step your momentum is zero then you step and now you have some momentum.
is the principles of conservation of momentum violated?
Explain
i think the answer is no but i dont know how to explain it

2007-12-03 11:05:09 · 5 answers · asked by confused 1 in Physics

2007-12-03 11:01:22 · 4 answers · asked by jezuarphilippe 1 in Engineering

give me an easy example to follow please

2007-12-03 11:00:53 · 2 answers · asked by Anonymous in Mathematics

Find an equation of the tangent plane to the parametric surface
x=1r*cos(theta), y =-5r*sin(theta), z=r at the point (sqrt{2} , -5sqrt{2}, 2) when r = 2, theta = pi/4.

2007-12-03 11:00:29 · 2 answers · asked by Anonymous in Mathematics

2007-12-03 10:59:28 · 7 answers · asked by polarbeardude 1 in Mathematics

interference of seismic waves produces beats

a.TRUE
b.FALSE

2007-12-03 10:58:47 · 3 answers · asked by maria s 1 in Earth Sciences & Geology

please list sources

2007-12-03 10:57:03 · 7 answers · asked by Anonymous in Engineering

Have you had any experiences with them or known someone who has?

2007-12-03 10:55:39 · 7 answers · asked by Anonymous in Paranormal Phenomena