Science & Mathematics - 15 October 2006

shows a picture of a pendelum @a-8oclock6oclock&5oclock

2006-10-15 14:52:41 · 3 answers · asked by gasguzlr76 2 in Physics

2006-10-15 14:51:22 · 1 answers · asked by punk zappa 1 in Chemistry

2006-10-15 14:50:20 · 1 answers · asked by Anonymous in Other - Science

it is a mathematical question

2006-10-15 14:50:17 · 10 answers · asked by Rainer T 1 in Mathematics

It's 9 letters.

2006-10-15 14:49:26 · 3 answers · asked by Bailey 2 in Physics

2006-10-15 14:48:08 · 28 answers · asked by Myrns 1 in Astronomy & Space

Imagine you've got a gear train consisting of a large cogwheel on the same axle as a small cogwheel with, say a quarter as many teeth. A large cogwheel drives a small one and its adjacent large cogwheel drives the next small cogwheel, and this arrangement is repeated several times to give a high gear ratio. Each stage increases the ratio by a factor of 4. With the best materials, bearings and lubrication, what's the highest ratio you could achieve in practice?

2006-10-15 14:47:47 · 3 answers · asked by zee_prime 6 in Engineering

The Ken Than article in space.com also on CNN.com tells about an exoplanet (around a star other than our own) that is a "gas giant" around Upsilon Andromeda, a star some 40 light years away. The trick is that it seemingly has a sunlit side temperature between 2500 and 3000 F (1400-1650 C) and -4 to -450 F on the dark side (they think it is tidally locked, so the same side always faces its star). The planet has a "tight orbit" and goes around every 4.6 days.

If it is a "gas" giant, and the gas is heated to some 3k F, how can it have such a cold other side. I can see that for a rocky planet, but gases expand and move when hot, and condense and sink when cold. Why would there be no circulation that moderates the temperatures? Any ideas? http://www.cnn.com/2006/TECH/space/10/13/fire.ice.planet/index.html

2006-10-15 14:46:54 · 2 answers · asked by Rabbit 7 in Astronomy & Space

(A) ignore friction
(B) assume the effective coefficient of friction retarding the car is .25

2006-10-15 14:45:41 · 2 answers · asked by Anonymous in Physics

2006-10-15 14:41:27 · 6 answers · asked by Anonymous in Other - Science

refraction of light from glass to air. The angle of incidence is 45 degrees and i need help figuring the angle of refraction of air. please include details of how to do this

2006-10-15 14:38:39 · 3 answers · asked by John L 1 in Physics

I need a science investigtion experiment . . . Does anyone have any suggestions??

2006-10-15 14:38:00 · 11 answers · asked by inyourface! 1 in Other - Science

It's 10 letters.

2006-10-15 14:37:38 · 4 answers · asked by Bailey 2 in Physics

2006-10-15 14:36:23 · 18 answers · asked by Jocelynn A 1 in Astronomy & Space

what r the main targets of the olfactory tract and what do they do? use lil words pleez!

2006-10-15 14:36:00 · 1 answers · asked by cloouvgeh 2 in Biology

is the answer a). 5x+6y=19 b). 5x-6=y c). -x+4y=15 d). 4x+5y= -1

please list the steps for solving this equation..
thank you

2006-10-15 14:34:57 · 8 answers · asked by Chris K 1 in Mathematics

2006-10-15 14:34:20 · 4 answers · asked by tinyfox 1 in Astronomy & Space

Is that what is going on in quantum mechanics when we talk about the equivalence of Schrodinger mechanics and Heisenberg matrix mechanics? Since one is a vector space composed of differential equations and the other a vector space composed of matrices. Is that why Dirac came up with bra ket notation...to express quantum mechanics in terms of a general vector space? I'm just curious.

2006-10-15 14:32:15 · 3 answers · asked by Link 5 in Physics

How do you bring the dead back to life?

2006-10-15 14:31:36 · 7 answers · asked by Anonymous in Physics

A manufacturer makes two models of an item: model I, which accounts for 80% of unit sales, and model II, which accounts for 20% of unit sales. Because of defects, the manufacturer has to replace 10% of its model I and 18% of its model II. If a model is selected at random, find the probability that it will be defective.

I need to know how to get to the answer most importantly.

2006-10-15 14:29:07 · 7 answers · asked by Anonymous in Mathematics

A toy car has a kinetic energy of 12 Joules. What is the kinetic energy after a frictional force of 0.6 newtons has acted on it for 5 minutes?

2006-10-15 14:28:47 · 2 answers · asked by Greg P 1 in Physics

aliens

2006-10-15 14:28:10 · 5 answers · asked by Jerry R 1 in Astronomy & Space

All eukaryotic cells have membrane covered compartments called {BLANK} that form when part of the cell membrane surrounds an object and pinches off.

2006-10-15 14:27:30 · 1 answers · asked by Bailey 2 in Physics

An 82 Newton trunk is accelerating along a plank inclined at 26 degrees from the horizontal. The coefficient of kinetic friction of the trunk and plank is .20
What is the value of F sub g
the value of f sub g of x
the value of f sub g of y
the value of the normal force
the value of friction
the value of the net force

What will happen to the acceleration of the trunk if the elevated end of the plank is raised? Why?

What will happen to the motion of the trunk if it reaches a section of the plank where the coefficient of sliding friction makes the frictional force equal to the magnitude of the horizontal component of the weight force?

2006-10-15 14:27:24 · 1 answers · asked by josh h 3 in Physics

2006-10-15 14:27:13 · 1 answers · asked by Anonymous in Other - Science

2006-10-15 14:24:43 · 6 answers · asked by Star911 1 in Mathematics

Also, in what sort of a math class would you discuss tensor mathematics in detail?

2006-10-15 14:23:38 · 3 answers · asked by Link 5 in Mathematics

if a curve with a radius of 80m is perfectly banked for a car traveling 70km/h

2006-10-15 14:21:15 · 2 answers · asked by Anonymous in Physics

A piece of uncooked spaghetti, held at the ends and bent will break into three pieces instead of two. Why? My household is going insane over this.

2006-10-15 14:20:35 · 2 answers · asked by Anonymous in Physics

It's 6 letters.

2006-10-15 14:18:03 · 8 answers · asked by Bailey 2 in Physics