Science & Mathematics - 28 August 2006

speed of light is about 186,000 mi/sec. the milky way galaxy has an approx diameter of 6x10 ^17 mi. estimate the # of years it would take the light to travel across th milky way.

thanks for the help.

2006-08-28 10:21:20 · 3 answers · asked by shih rips 6 in Mathematics

I'm trying to solve a vector problem: A plane whose airspeed is 200 km/h heads due north. But a 100 km/h northeast wind coming from the northeast suddenly begins to blow. What is the resulting velocity of the plane with respect to the ground?

Now, I want to know what "respect to the ground means"...I would be able to solve it if it was "respect to the airplane or wind" but I don't think I've ever heard of "respect to the ground"...

2006-08-28 10:20:20 · 7 answers · asked by Moosehead 2 in Physics

Is there not always something smaller before you get to nothing? How can you move from something to nothing without that something being able to get just a little smaller before nothing?

2006-08-28 10:19:50 · 8 answers · asked by nobodiesinc 1 in Physics

I found a web site someone had asked about the experiment in Hawaii so they could google it here is onehttp://www.sno.phy.queensu.ca/public/experiments.html

2006-08-28 10:15:26 · 2 answers · asked by Mae 2 in Astronomy & Space

As part of a process I must heat an oil above its smoke point. How do I prevent the oxidation of the oil while it is still hot?

2006-08-28 10:13:50 · 8 answers · asked by zymer5 1 in Chemistry

building one right next to it. Basicaly what im asking is if you wanted to terraform mars by heating up the planet wouldnt it make more sense to build a mirror/lens closer to the sun then further away from it. Same could go for if you wanted to do the same for the earth if you had a way to use the energy of course. Maybe by putting something that could absorb and store energy near the earth and have the reflecting mirror/lens send light energy to it. :)

2006-08-28 10:13:08 · 3 answers · asked by magpiesmn 6 in Physics

i'm having trouble with this word problem. i know there's 2-steps to solve it. thanks for the help.

table 1.2
year--> 1960, 1965, 1970, 1975, 1980, 1985, 1990, 1995, 2000
CPI--> 29.6, 31.5, 38.8, 53.8, 82.4, 107.6, 130.7, 153.5, 172.2

use table 1.2 to estimate the percent change in prices from 1965 to 1995. in 1965 a gallon of gas cost about $0.30. if this price had kept pace w/ the CPI, what would a gallon of gas have cost in 1995?

2006-08-28 10:08:25 · 4 answers · asked by shih rips 6 in Mathematics

2006-08-28 10:02:35 · 1 answers · asked by Antonio o 1 in Biology

2006-08-28 10:01:32 · 8 answers · asked by doorseeker 1 in Astronomy & Space

2006-08-28 10:01:32 · 8 answers · asked by Yo yo 2 in Other - Science

What animal would win if you threw all of them in a pit to fend for themselves?

2006-08-28 10:01:07 · 6 answers · asked by DAMIND 2 in Geography

2006-08-28 10:01:05 · 11 answers · asked by Anonymous in Physics

2006-08-28 10:00:58 · 4 answers · asked by dooralarm 2 in Other - Science

2006-08-28 09:50:49 · 30 answers · asked by Jayson M 1 in Other - Science

This is the project:


The Butterfly's Secret: How Do Temperature and Light Affect the Time It Takes a Chrysalis to Hatch?

Experimental Procedure

As the Painted lady caterpillars formed into chrysalises I number them and put them into 1 of 4 clear plastic boxes. Box A: warm/light, temperature 71.4 deg F with 12 hours of daylight and 12 hours of darkness. Box B: warm/dark, temperature 71.4 deg. F. where there was 20 hours of darkness and 4 hours of daylight. Box C: cold/light, temperature 56.6 deg. F where there was 12 hours of daylight and 12 hours of darkness. Box D: cold/dark, temperature 57.1 deg. F where there was 20 hours of darkness and 4 hours of daylight. A digital thermometer is used.

My question is how can I properly regulate the temperature of the box that I keep them in? I really want to do this project so I need to figure this out. Anyone who can help me gets 10 POINTS okay? Thanx soo much!

2006-08-28 09:48:12 · 5 answers · asked by LeyAsh 2 in Zoology

For example, we can measure how much salt is going into the oceans, how much is going out. On current measurements the oceans can only be thousands of years old.
For example, the moon is receding. Extrapolating backwards, the earth/moon cannot be millions of years old.
For example the earths magnetic field is decaying. Extrapolating backwards, the earth cannot be more than thousands of years old.
For example radiometric dating methods are based on ssumptions and are demonstrably flawed - rock from a recent volcano was dated as millions of years old.
http://www.answersingenesis.org/home/area/faq/Young.asp
http://www.answersingenesis.org/home/area/faq/dating.asp

How many different evidences of a young earth will it take to convince people?

2006-08-28 09:43:33 · 36 answers · asked by a Real Truthseeker 7 in Earth Sciences & Geology

I remember it was promoted alot by President Reagan..and even saw something on tomorrows world about it..The plan was to send up satellites with lasers on it and shoot down nuclear missiles...

2006-08-28 09:43:18 · 16 answers · asked by Red 3 in Astronomy & Space

2006-08-28 09:43:13 · 11 answers · asked by doorseeker 1 in Astronomy & Space

2006-08-28 09:42:44 · 21 answers · asked by Anonymous in Chemistry

2006-08-28 09:42:10 · 10 answers · asked by doorseeker 1 in Astronomy & Space

Hair, claws, fingernails and hooves are made of something. I am trying to figure this out and I cant seem to find what it is. The book doesn't mention it exactly.
Could be; keritin, but i'm not sure.

2006-08-28 09:41:18 · 8 answers · asked by Ayla_Trip 1 in Biology

2006-08-28 09:40:33 · 7 answers · asked by Anonymous in Geography

2006-08-28 09:40:27 · 9 answers · asked by dejavus 2 in Chemistry

Nobody knows the answer to this, but it is worth seeing what others think.

Ammonites were the totally wiped out by whatever caused the extinction of the dinosaurs. Ammonites were those round, spiral shelled molluscs that prior to the extinctions swarmed in the oceans by the billions. There are fossils of them an inch across, and others 4 feet across. They were incredibly successful, and the hundreds of different species existed for hundreds of millions of years.

But they all disappeared 65 million years ago when the dinosaurs went. Not one is left. Not even a descendant. At least they think the dinosaurs gave rise to birds.

Then if the event, whatever it was, could kill off all these fairly small sea creatures, how come huge sharks survived in the same oceans? Lots of other shellfish survived. Why were these ones wiped out?

In its way, it is a much bigger mystery than the dinosaurs. It is just that we find dinosaurs much more exciting creatures.

2006-08-28 09:38:38 · 4 answers · asked by nick s 6 in Astronomy & Space

2006-08-28 09:37:50 · 16 answers · asked by A 2 in Engineering

2006-08-28 09:37:33 · 3 answers · asked by A 2 in Other - Science

2006-08-28 09:36:47 · 9 answers · asked by mizteelady 2 in Weather

That is, the area of the arc, under the chord. I only know the diameter of the circle: 1.5'. And the height from the bottom of the circle, perpendicular to the chord: 1'.

2006-08-28 09:36:37 · 4 answers · asked by jfahd 4 in Mathematics

2006-08-28 09:35:35 · 4 answers · asked by Anonymous in Chemistry

2006-08-28 09:35:25 · 3 answers · asked by Anonymous in Other - Science