Science & Mathematics - 10 October 2007

I passed the required courses 5 yrs ago. Do I need a refresher course?

2007-10-10 18:40:57 · 2 answers · asked by onedeuce_12 2 in Engineering

2007-10-10 18:40:32 · 8 answers · asked by Anonymous in Zoology

4x+y=-5
4x+3y=9

2007-10-10 18:29:40 · 1 answers · asked by a 1 in Mathematics

It is about 5ft tall, was sold at Home Depot and I have it indoors, looks tropical, has very thick stems... one for each leaf, dark green, the leaves are about 1-2 ft long in an oval type shape whith a point at the end and smooth oval type at the stem connection, also, the leaves are smooth on the sides. One large viegn runs up through the center of each leaf and then there are smaller viens running out from there. Any help is much appreciated so I do not give it too much or too little of water/sun.

2007-10-10 18:28:38 · 6 answers · asked by Anonymous in Botany

2007-10-10 18:26:23 · 2 answers · asked by techgeek24 1 in Mathematics

WHAT DECIMAL PART OF 8 IS 3
WHAT DECIMAL PART OF 1.5 IS 37.5

2007-10-10 18:21:29 · 1 answers · asked by austin 1 in Mathematics

I do. Just wondering if I''m alone in this belief...on this site.

2007-10-10 18:20:54 · 15 answers · asked by Deenie 6 in Parapsychology

what are the typical organisms (plants and animals) in the following habitats and biomes? What features do the organisms have to adopt to that environment?
1) tundra
2) tropical rain forest
3) desert
4) ocean
5) Coniferous forest
6) freshwater stream
7) rocky shore
8) Grassland

2007-10-10 18:20:18 · 3 answers · asked by Anonymous in Earth Sciences & Geology

why not or how?

2007-10-10 18:19:20 · 10 answers · asked by Anonymous in Astronomy & Space

Or could you be hearing saints? (in Catholic church there is the communion of saints belief)

2007-10-10 18:10:23 · 9 answers · asked by Deenie 6 in Parapsychology

2007-10-10 18:07:08 · 5 answers · asked by YAHOODIDDLYDO 1 in Zoology

HOMEWORK HELP

2007-10-10 18:04:35 · 3 answers · asked by ben r 1 in Botany

This would never happen but say an astronaut went out of space with no suit? I kind of want in detail because I already have an idea of what would happen.

2007-10-10 18:00:07 · 7 answers · asked by Anonymous in Astronomy & Space

2007-10-10 17:59:42 · 4 answers · asked by Jen 1 in Medicine

the nature of the sound and its loudness is different when we tear a wet paper.

2007-10-10 17:55:17 · 7 answers · asked by raj 2 in Physics

you know the hot place where the magma and stuff comes from?

2007-10-10 17:52:52 · 5 answers · asked by Gruntled Employee 6 in Earth Sciences & Geology

I answer questions on the mental health category...and I hesitate to suggest that their voices might be spirits (but sometimes I do) Just don't want to lead anyone astray. I always tell them to go to their family dr. too about it. You know psychiatrist don't believe about spirits. How would you advise them?

2007-10-10 17:52:19 · 11 answers · asked by Deenie 6 in Parapsychology

Assume all public wire and wireless communication centers
broadcast public instruction to prepare for fifty meter wave
due in 6 hours on seashore nearest reader. Citizens are
notified public roadway transport, within the next 30 minutes, will likely slow due bumper-to-bumper........ (Static Sounds)...
the land under reader shudders a few seconds and electric
power fails. No cellular, no Fax, no Internet. Outside come
the first raised voices of panic.

Can reader reach terrain or large structure higher than 50 meters sufficient to resist the crush of wreckage such wave will carry? Name a safe destination, how one expects to reach it.....................or has reader different agenda?

2007-10-10 17:51:56 · 4 answers · asked by Anonymous in Engineering

The tires on a new compact car have a diameter of 2.0 ft and are warranted for 58,000 miles.

Determine the angle (in radians) through which one of these tires will rotate during the warranty period.
?rad

How many revolutions of the tire are equivalent to your answer in (a)?
?rev

2007-10-10 17:49:43 · 1 answers · asked by Ashley S 1 in Physics

2007-10-10 17:49:21 · 10 answers · asked by TRACER 3 in Astronomy & Space

http://myspacetv.com/index.cfm?fuseaction=vids.individual&videoid=19745041

people said it doesnt but i dont have the stuff to find out for myself. will someone try it really quick?

2007-10-10 17:49:11 · 2 answers · asked by Manda K 3 in Chemistry

do you have a formula for that? example...distance is 30 miles....rate at 65 mph...time is .461538462 ....so what is that converted into time? 46 minutes? or what?

2007-10-10 17:46:38 · 8 answers · asked by Anonymous in Mathematics

Copper is extracted from the ore, Chalcopyrite, CuFeS2. How many kilograms of a 0.862% chalcopyrite ore will be necessary to produce 1.00kg of pure copper? The percentage of copper in chalcopyrite needs to be known to work this problem.

I don't know what to do with the 0.862%. Please help me.

2007-10-10 17:44:16 · 2 answers · asked by newLove 2 in Chemistry

A 7.0 kg block is pushed 3.0 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of = 30° with the horizontal, as shown in Figure http://www.webassign.net/sf/p5_70.gif . If the coefficient of kinetic friction between block and wall is 0.30, determine the work done by each of the following.

Find
a. the force F

b. gravity

c. the normal force between block and wall

d. By how much does the gravitational potential energy increase during the block's motion?

2007-10-10 17:39:52 · 1 answers · asked by Anonymous in Physics

sin^(1/2)xcosx-sin^(5/2)xcosx=cos^3x(sinx)^1/2

2007-10-10 17:38:01 · 2 answers · asked by unknown 2 in Mathematics

A 223 g particle is released from rest at point A on the inside of a smooth hemispherical bowl of radius R = 27.0 cm http://www.webassign.net/sercp/p5-65.gif

Find
a. its gravitational potential energy at A relative to B

b. its kinetic energy at B

c. its speed at B

d. its potential energy at C relative to B

e. its kinetic energy at C

2007-10-10 17:36:19 · 2 answers · asked by Anonymous in Physics

What is the source of energy for a contracting protostar? Please help.

2007-10-10 17:34:33 · 4 answers · asked by Carlos 2 in Astronomy & Space

2007-10-10 17:33:16 · 7 answers · asked by Anonymous in Other - Alternative

2007-10-10 17:32:57 · 2 answers · asked by Anonymous in Chemistry

i had a friend who really needed a blood type ab and it so happened that we heard of a guy who recently died and is in the morgue rigth that moment.. we thought of using the corpse blood to tranfer to him but we were amazed when they said that it is not rigth. why?

2007-10-10 17:30:40 · 20 answers · asked by ketchup 1 in Medicine