Science & Mathematics - 30 December 2006

I am building an arch for my garden. It will stand 2.4 m above ground and weigh 160 kg. There are two vertical posts, each of which will extend 60 cm into the ground. How heavy must the foundation be to support the arch's weight? That is, how much cement must I pour to create a firm foundation?

2006-12-30 20:10:52 · 2 answers · asked by Ross 1 in Engineering

What is the difference between Heat Death and Big Rip?

2006-12-30 20:09:05 · 7 answers · asked by sunneyzwang@sbcglobal.net 2 in Astronomy & Space

passing through (0,3) and parallel to y=4x-2
passing through (2,0)and perpendicular tp y=x/3-1

2006-12-30 20:07:51 · 3 answers · asked by avenger 2 in Mathematics

2006-12-30 20:04:47 · 8 answers · asked by (_´Д｀)ノ まともに はじめなさいよ!(´∀｀）♪ 3 in Other - Science

2006-12-30 20:02:09 · 14 answers · asked by hanan a 1 in Other - Science

is it possible for spiders to lay eggs inside of a human, and then the spider breaking out of the person's skin or something like that?

2006-12-30 19:56:33 · 12 answers · asked by Bob 1 in Zoology

I need to study a branch of chemistry that has no math and physics whatsoever (or at least very little) What branches are not related to these ?
I am not so fond of Biology either :)

2006-12-30 19:55:49 · 9 answers · asked by Anonymous in Chemistry

1. place three plus signs and one minus sign tp the left of the equal sign so that the eq.
3 3 4 4 5 5 6 6 7 7 =143 is true
2. seven consecutive integers have a product 32,432,400. find the seven integers.hint: find the prime factors of the product.
3.john asked pete how much money he had on his pocket. pete replied "if i had 12 pesos more than i have and then double that amount , id be 60 pesos richer than i am.how much money had pete?
4.ana gave bikk and clare as much money as each had . then bill gave ana and clare as much money as each had . lastly, clare gave ana and bill as much money as each had . then each had 24 pesos . how much money did each begin with?hint: work bavkward.
5. arrange 2^75, 3^50, and 5^25 from smallest to largest.
6. in the division 24874 divided by 17 which digit should one change in the first number to increase the answer by 100.

2006-12-30 19:53:59 · 5 answers · asked by avenger 2 in Mathematics

2006-12-30 19:47:24 · 5 answers · asked by smile 3 in Chemistry

2006-12-30 19:46:57 · 7 answers · asked by arpit 1 in Mathematics

2006-12-30 19:40:35 · 5 answers · asked by rsanand78 1 in Weather

I know that fire can be extinguished by dirt but can dirt be burned by fire?
I know that clay ( a form of dirt ) can be baked to harden but can it be burnt completely to ash?
If so what temperature would fire have to be at to completely dissolve dirt?

2006-12-30 19:31:07 · 6 answers · asked by Habib W 1 in Earth Sciences & Geology

me and another person were listening to two separate radios in adjacent rooms. I had a plasma light (sphere shapped novetly lamp) in my room. When I turned the lamp on, the radio in the other persons room became very staticy- but not the radio in the room containing the lamp. When the lamp was brought into the other room, the radio in my room had the same static noise. Do you have any explanation for this?

2006-12-30 19:30:50 · 2 answers · asked by carr0t 1 in Physics

2006-12-30 19:29:24 · 10 answers · asked by skoda_styles 1 in Chemistry

2006-12-30 19:28:45 · 5 answers · asked by Anonymous in Chemistry

2006-12-30 19:25:23 · 15 answers · asked by Matt 1 in Mathematics

Say anything is possible,just for now...Thanks

2006-12-30 19:24:28 · 12 answers · asked by Anonymous in Astronomy & Space

2006-12-30 19:22:51 · 16 answers · asked by Matt 1 in Medicine

2006-12-30 19:21:03 · 4 answers · asked by malcolm m 1 in Medicine

2006-12-30 19:20:33 · 8 answers · asked by Matt 1 in Medicine

As light bright sunlight can burn a deaf person's skin,they cannot hear....Tom Science 4

2006-12-30 19:19:20 · 10 answers · asked by Anonymous in Physics

2006-12-30 19:17:00 · 6 answers · asked by agarwalsankalp 2 in Mathematics

please help me yahoo members...... it is covered by the topic electromagnetics

2006-12-30 19:16:50 · 5 answers · asked by zurc_michelle_07 1 in Engineering

what part of your body do you recieve the rabies shot, and how many do you recieve? somee people have told me its 7 shots on the stomach, someone else said its a series of shots thru a 28 day period where you get them on your arms, or is it just one shot?

2006-12-30 19:16:43 · 5 answers · asked by Anonymous in Medicine

Thanks

2006-12-30 19:14:50 · 10 answers · asked by Anonymous in Astronomy & Space

me for my assignment and please show solutions


1.) Mr. Aquino mixed 40 kg of cashew nuts with 100 kg of peanuts costing $ 100/kg. The assorted product now sells for $ 130/kg at a profit of 25% of the cost. How much did the cashew nuts originally cost per kilogram?

2.) Alcohol solutions of 90% and 58% concentration are mixed together to make a 20 litre 78% solution. How much of each needed?

3.) How many litres of water must be added to 60 mL of the very corrosive glacial acetic acid (pure or 100% acetic acid) to make 6% acetic acid?

2006-12-30 19:09:17 · 7 answers · asked by Anonymous in Mathematics

Okay, and "abductees" have any wisdom to pass forth from those aliens who visited with you? (besides humanoids being destructive.....what other messages did they tell you)
And when exactly do they plan to "visit us and reveal why we are all here"

2006-12-30 19:09:07 · 4 answers · asked by deirdrefaith 4 in Astronomy & Space

2x^2+4x-1 ; x is greater than or equal to one

i can't solve for x in terms of y... help! tnx

2006-12-30 19:06:20 · 5 answers · asked by Anonymous in Mathematics

2006-12-30 19:00:28 · 5 answers · asked by carr0t 1 in Physics

2006-12-30 18:57:23 · 18 answers · asked by Anonymous in Zoology