Science & Mathematics - 28 November 2007

2007-11-28 02:52:55 · 1 answers · asked by Hyperbolic Logic 2 in Mathematics

2007-11-28 02:49:47 · 2 answers · asked by Crina I 1 in Engineering

and the Northern red oak, Norway maple, sassafras, and common hackberry and Red maple?

2007-11-28 02:48:09 · 2 answers · asked by catie b 1 in Botany

does anyone know how alkaline liquids and acidic liquids will affect plant growth?

2007-11-28 02:47:57 · 2 answers · asked by lablkn;sdklmafiodma!!!! 1 in Botany

2007-11-28 02:44:43 · 11 answers · asked by sanoussi bah 1 in Astronomy & Space

So you're coming down a rope from the Space Station to Earth & since the Space Station is moving around in orbit does that mean once you have more atmosphere it's gonna get windy and you'll be traveling pretty fast?

2007-11-28 02:44:32 · 5 answers · asked by Zanik99 2 in Astronomy & Space

The towers of the Golden Gate Bridge connecting San Francisco to Marin County are 1280 meters apart and rise 160 meters above the road. The cable between the towers has the shape of a parabola and the cable just touches the sides of the road midway between the towers.

Coordinates for tower: (640, 160)

1. What is the height of the cable 200 meters from a tower? Round to the nearest meter.

2. Use this problem to explain why mathematics can be an evolving discipline, interrelated with human culture, and its connections to other disciplines.

2007-11-28 02:43:17 · 1 answers · asked by Anonymous in Mathematics

2.list the kinds of chemical reaction.
3.what are the products , when wax burns?
4.How can water be decomposed into its elements, hydrogen and oxygen?
5. How can silver be prevented from tarnishing?
6. Identify these properties of matter as chemical (C) or physical(P). a. magnetic, b. rusting, c. shape, d. oxidizing, e. density, f. electroplating, g. color, h. burning, i. weight, j. reaction with acid, j. hardness

2007-11-28 02:42:17 · 1 answers · asked by rosemariestewart64 1 in Chemistry

Apparently U.S. Progressed sun is in Pisces.

2007-11-28 02:37:33 · 5 answers · asked by Hdtvnewbie 2 in Astronomy & Space

Will human beings have to relook at themselves on discovering that we're not alone? Will we have to discard the old science books? Will we have to redefine beauty? Will our minds have to be reformatted to see the universe differently?

2007-11-28 02:29:10 · 5 answers · asked by virtrava 3 in Astronomy & Space

IThis was posted before, here's the slightly corrected version).

At 12:00 noon, Twin A with clock stays at rest while Twin B with telescope jumps to 4/5ths speed of light. Twin B, using telescope, observes Twin A's clock going more slowly because of relativistic doppler. After some time, Twin B suddenly reverses course and heads home at 4/5ths speed of light. Still using the telescope, Twin B observes Twin A's clock going faster, again because of relativistic doppler. At 1:00 pm, he notices that Twin A's clock now also shows 1:00 pm. When Twin B arrives back home with Twin A, how much older is Twin A than Twin B?

Bonus question: Why does Twin A, using telescope, never sees Twin B's clock showing the same time as Twin A's clock?

2007-11-28 02:23:20 · 4 answers · asked by Scythian1950 7 in Physics

FInd the 8th roots of 1 expressing your answer in x+iy form

2007-11-28 02:21:57 · 2 answers · asked by Anonymous in Mathematics

I have four 64 oz - one filled with air, one with soil, one with small pebbles, and the last with warter. Each have a plug and a thermometer. The each will sit in direct sunlight and after sun down I will record their temps. Each hour (for the next two hours)after that I will record their temps.

2007-11-28 02:20:27 · 2 answers · asked by Anonymous in Earth Sciences & Geology

in metre/square seconds

2007-11-28 02:19:50 · 3 answers · asked by mana 1 in Astronomy & Space

2007-11-28 02:08:35 · 1 answers · asked by adams girl 2 in Chemistry

2007-11-28 02:04:08 · 12 answers · asked by Harrykris 2 in Astronomy & Space

2x^2-3x-9

2007-11-28 01:57:46 · 10 answers · asked by Anonymous in Mathematics

is there a cure?

2007-11-28 01:54:04 · 10 answers · asked by Northville07 3 in Medicine

2007-11-28 01:52:41 · 5 answers · asked by Anonymous in Geography

I've heard it said for years that according to the laws of thermodynamics, a bumblebee should not be able to fly. Has scientific knowledge increased enough to explain the discrepancy?

2007-11-28 01:44:56 · 4 answers · asked by night_train_to_memphis 6 in Physics

hocker players hits ball of mass 0.2kg. The contact time between the stick and the ball is 0.3s and the force exerted on the ball by the stick is 60N. Find the speed in which the ball leaves the stick.

This simple one baffled me for some reason =(

2007-11-28 01:39:44 · 3 answers · asked by Anonymous in Physics

2007-11-28 01:37:17 · 7 answers · asked by Tracy Terry 2 in Astronomy & Space

2007-11-28 01:35:39 · 5 answers · asked by Tracy Terry 2 in Astronomy & Space

Is it due to the water vapour concentration or what?

2007-11-28 01:34:39 · 6 answers · asked by numero uno 2 in Weather

Two weeks ago a monkey faced the daunting task of retrieving a bottle of Vodka that Lewis Carroll had stashed on his roof. The monkey beat the challenge and shared the Vodka with his good friend the Cheshire Cat. See http://answers.yahoo.com/question/index;_ylt=AhvKefOetlVmVzowiKt64NLsy6IX;_ylv=3?qid=20071114125308AAbeCwb

But now, Carroll has a new bottle and he has also rigged the mechanism so the Monkey can't use his old trick.

A Cable hangs over frictionless pulley, next to roof on which is nice bottle of Vodka. The cable has uniform mass.

A weight hangs on one end of the cable, on the other side, the monkey has a knot he can sit on. The weight and the monkey balance exactly.

Additionally to prevent the monkey from climbing up the cable until the weight jams into the pulley, Carroll attached a latch. If the weight gets too high up the latch is triggered, the weight falls to the ground as so does the monkey.

Within minutes, the monkey had stolen the vodka.

2007-11-28 01:30:05 · 2 answers · asked by Frst Grade Rocks! Ω 7 in Physics

there has been much talk about Planet X's (Nibiru's) arrival in February 2013 (ref: http://www.yowusa.com ).

What do you think about the Jupiter Event that may occur within the next few weeks (around Christmas 2007)? (ref: http://abundanthope.net/pages/article_856.shtml)

2007-11-28 01:28:21 · 5 answers · asked by Dolphyn Wisdom 1 in Astronomy & Space

Good day to all science inclined people!

In Cebu City, Philippines, the MATH MAJOR'S CIRCLE made a contest named Science Olympiad wherein it gathers students from the province and city of Cebu.

I participated this contest just 8 hrs ago with two members in my team in University of San Carlos - North Campus. We placed 4th among sixteen schools in Cebu.

For me, as a SENIOR high school student, I'm very happy because my golly...other schools like Science High and etc. are hard to beat especially the fields tackled are GENERAL SCIENCE, BIOLOGY, CHEMISTRY, PHYSICS, GEOLOGY and ASTRONOMY.

What do you think?

2007-11-28 01:24:41 · 3 answers · asked by Anonymous in Physics

science related anwer

2007-11-28 01:18:30 · 4 answers · asked by Anonymous in Other - Science

Hey all you brainiacs, Give me you're opinion.
Scientist claim that there isn't enough matter the universe to stop it's expansion. However, recently they have discovered that all the galaxes they have looked at have black holes. Gravitation of an object is only as strong as it's mass. So as black holes grow, so does it's mass (gravity). Do you think it's possible that when all of the galaxies are more or less swallowed up by there black holes, that their mass would be strong enough to pull all matter back together? And conceivably cause another 'Big Bang'?

2007-11-28 01:16:34 · 5 answers · asked by Jackolantern 7 in Astronomy & Space

2007-11-28 01:16:20 · 9 answers · asked by matthew b 4 in Astronomy & Space