Science & Mathematics - 31 October 2007

Sometimes the skinny earth worms are still "wiggling" just a bit. They are found about 5 feet from the sliding glass door. Right in the middle of the living area on the carpet. The place is only a few years old, and the seal around the sliding door looks fine. How in the world are these getting in? I wonder if we are draggin them in on our shoes or clothes and then they drop onto the floor when we get inside. BUT the only place we ever see them is in the living room. Someone suggested salt by the door to detract them. So gross. I hate worms.

2007-10-31 05:47:20 · 6 answers · asked by jeffreyj0125 1 in Earth Sciences & Geology

2007-10-31 05:45:31 · 24 answers · asked by cupid blue 1 in Astronomy & Space

2007-10-31 05:42:28 · 14 answers · asked by curious_inquisitor 1 in Astronomy & Space

2007-10-31 05:41:33 · 10 answers · asked by Ted 2 in Engineering

2007-10-31 05:38:10 · 3 answers · asked by ptolemyixi 1 in Chemistry

Foci: (-10,0) (10,0)
Vertices: (-5,0) (5,0)

2007-10-31 05:35:53 · 2 answers · asked by pitbulgurl 1 in Mathematics

Lets say the object is 5 miles in diameter and moving at 35 km per second.

2007-10-31 05:29:52 · 10 answers · asked by curious_inquisitor 1 in Astronomy & Space

I read somewhere that clocks on top of sky scrappers experience a deviation from those on the ground, due to less gravity effecting space/time.

Is this true? Is time faster or slower in the absence of gravity?

2007-10-31 05:26:57 · 4 answers · asked by Fred Head 4 in Physics

pls give me fast answers coz it's for a competition and we haven't done anything yet ;)

thanks :)

2007-10-31 05:25:18 · 4 answers · asked by tut_einstein 2 in Engineering

Calculate the energy difference (E) for the photon absorbed when a hydrogen atom undergoes a transition from n = 1 to n = 4 for 1 mol H atoms.

2007-10-31 05:23:28 · 1 answers · asked by jnester0289 1 in Chemistry

Please don't say calculate! I know F=1.8 C + 32 but, I want it shown in C in my home page in new Yahoo Mail.
Thank you

2007-10-31 05:22:35 · 1 answers · asked by mniayesh 1 in Weather

I am looking at laser technology used for laser marking

2007-10-31 05:18:49 · 3 answers · asked by Anonymous in Engineering

I was watching Lara Croft Tomb Raider, and I have heard of something to the effect that at some point in our lifetime (other yahoo answer people are saying 12/21/12) that the planets will align. When I asked this question a few days ago, everyone said the palnets will never be in exact alignment. So my question is if the Tomb Raider movie is at all accurate, what do astronomers mean when they say that there will be a planetary alignment in December of 2012? Does this mean that all 9 (or 8) planets will be in perfect alignment if only for a few seconds causing a total eclipse, or does it simply mean that only the inner or outer planets will align with the Earth's orbit? I'm just curious. Thanks.

2007-10-31 05:16:40 · 4 answers · asked by dg2003 5 in Astronomy & Space

2007-10-31 05:16:21 · 10 answers · asked by Anonymous in Earth Sciences & Geology

2007-10-31 05:15:27 · 13 answers · asked by 343 3 in Astronomy & Space

2007-10-31 05:15:11 · 10 answers · asked by Anonymous in Other - Alternative

My son is learning signed numbers at school. It's been years since I've done this! Can someone please help explain this to me so I can better help him?

Here is an example problem:

3²(-4)²/-1

Following the order of operations you would solve for 3² and (-4)² giving you 9 and -16.

Then you'd multiply 9 by 16 giving you -144.

The problem would then be -144/-1 and the end result would be +144. Right?

I was wrong. The correct answer [according to the book] is +5. Please help me figure this out! I just don't understand anymore!! Haha.

Thanks!

2007-10-31 05:13:26 · 15 answers · asked by Karma Lucille 1 in Mathematics

We are trying to find a curved mirror, or bend it some way. Do we have to weld it like metal or do some chemical reaction to make mirror bend?

2007-10-31 05:11:38 · 6 answers · asked by Anonymous in Engineering

For an enteric bacterium, would it be possible to track the movements of the bacterium within the living host, without detrimental effects to the host?

This has been done with mice and Salmonella before: does anyone have a reference for this?

Could you label the bacteria with something that could be tracked through the host?

2007-10-31 05:10:49 · 3 answers · asked by ewanspewan 4 in Biology

a. 2-propanol
b. propane
c. 1-propene
d. butane

2007-10-31 05:09:04 · 7 answers · asked by lyndon y 1 in Chemistry

2007-10-31 05:03:33 · 4 answers · asked by Anonymous in Mathematics

A reflecting telescope has a parabolic mirror for which the distance from the vertex to the focus is 35 feet, If the distance across the top of the mirror is 56 inches, how deep is the mirror in the center?

2007-10-31 05:02:55 · 2 answers · asked by pitbulgurl 1 in Mathematics

I'm taking Discrete & I know that a^k = 1 mod n, but is there a shortcut to finding what k equals??

if u can help plzz thnks :]

2007-10-31 05:02:33 · 1 answers · asked by Anonymous in Mathematics

2007-10-31 05:00:56 · 5 answers · asked by katie h 1 in Earth Sciences & Geology

a. they may have different boiling points?
b.they have different densities
c. they may have different reacitvity
d. all true

2007-10-31 05:00:42 · 4 answers · asked by lyndon y 1 in Chemistry

A student weighs an empty flask, aluminum foil, and copper wire and finds the mass to be 54.8680g. She then adds about 5.0mL of an unknown liquid and heats the flask in a boiling water bath to 99.0°C. After all the liquid is vaporized, she removes the flask from the bath and weighs it after it has cooled. The weight of the flask, foil, wire, and unknown liquid was found to be 55.8020g. The volume of the flask is 242.5mL and barometric pressure was 747.0mm Hg (Torr).

What was the pressure of the vapor in the flask in atm?
I have 0.9829 atm

What was the temperature of the vapor in K? the volume of the flask in liters?
I have 372.15K and 0.2425L

What was the mass of the vapor that was present in the flask?
I have 0.9340g

What is the mass of one mole of vapor?
I have 119.2g/mol

Also if all of the unknown liquid has not fully vaporized, would the result for the molar mass be higher, lower, or the same as a properly done experiment?
I said it would be the same.

2007-10-31 04:58:55 · 3 answers · asked by Anonymous in Chemistry

2007-10-31 04:56:03 · 3 answers · asked by Anonymous in Geography

2007-10-31 04:55:30 · 12 answers · asked by curious_inquisitor 1 in Astronomy & Space

One number is two less than a second number. Twice the second number is 8 less than 3 times the first. Find the two numbers.
Pre-algebra - by Mary Lee Vivian, Margaret Thomas - 128 pages
Algebra - by Mary Lee Vivian, Margaret Thomas - 128 pages
The popular educator - by Popular educator

2007-10-31 04:54:13 · 9 answers · asked by Anonymous in Mathematics

The giants causeway is a rare wonder

People say it took millions of years of natural erosion of basalt rock and the general cooling of volcanoic lava

The rock formations are helixical and parallel and dead vertical in places


what do you guys think, is this the hand of man, or even giant men as the name would suggest or do you think it's the result of millions of years

well this is my answer, the rocks are made of repeating units, almost brickwork in natrue, areas show sheer vertical flat and parallel layers, if this is due to millions of years then so was mount rushmore.

The question is, if it did not take millions of years, then who built it?

follow the url and come back to me with your thoguhts:

http://www.answers.com/topic/giants-causeway-organ-jpg

lets see what peoples views are

2007-10-31 04:51:08 · 5 answers · asked by Anonymous in Astronomy & Space