Science & Mathematics - 7 July 2007

2007-07-07 12:08:40 · 17 answers · asked by Anonymous in Zoology

What are we breathing now?

2007-07-07 12:01:15 · 15 answers · asked by Anonymous in Other - Science

Saw on the news today that Arizona is having a problem with Dust Tornados because it is so dry there. I got to wondering, could you stand in one and survive unlike a regular tornado? I know you'd have a bunch of sand all over you, but was wondering. Thanks!

2007-07-07 11:55:52 · 8 answers · asked by atlantagal 5 in Weather

I just bought a cheep refractor telescope for 100 dollars yesterday. I spent about 5 hours last night with it from my bedroom window so I am pretty hooked. I'm taking it out in to the country tonight to get away from the city. Any advice you might give to a novice astronomer to help me out?

2007-07-07 11:54:45 · 4 answers · asked by Anonymous in Astronomy & Space

2007-07-07 11:46:24 · 10 answers · asked by crazyartist14 1 in Weather

2007-07-07 11:43:40 · 12 answers · asked by Anonymous in Medicine

2007-07-07 11:21:09 · 18 answers · asked by Los Angeles L 1 in Mathematics

The earth wont last forever. In some billions years ahead, our sun will give us its last breath of energy until it vanishes into nothingness. And if we stay around, it seems we will share its fate. Will we die with it or move on somewhere else? When do you think that the last living human being will pass...?

2007-07-07 11:14:38 · 9 answers · asked by Christian 2 in Earth Sciences & Geology

same question above

2007-07-07 11:14:36 · 8 answers · asked by ? 5 in Astronomy & Space

The earth wont last forever. In some billions years ahead, our sun will give us its last breath of energy until it vanishes into nothingness. And if we stay around, it seems we will share its fate. Will we die with it or move on somewhere else? When do you think that the last living human being will pass...?

2007-07-07 11:12:50 · 14 answers · asked by Christian 2 in Astronomy & Space

options are:
a. to get output true/false
b. to get output 1 and 0
c. to get electrical circuit output

2007-07-07 11:07:13 · 4 answers · asked by Merajzai 2 in Engineering

2007-07-07 11:07:04 · 9 answers · asked by Ashley J 1 in Biology

I'm trying to figure out if these actions would be pure chemistry, applied chemistry, or both pure and applied chemistry.

1. Determining how much energy is released when iron forms rust.
2. Determining how the size of silver grains on photographic film affects the resolution of the finished print.
3. Isolating a chemical compound from the leaves of a newly discovered tropical plant.
4. Developing a method of purifying the polluted well water in a small town.
5. Determining what elements exist on a distant star.

Your help is greatly appreciated! Thanks.

2007-07-07 11:06:12 · 4 answers · asked by Steven M 3 in Chemistry

Do animals see dreams, nightmares, and or fantasies like us humans when we sleep?

2007-07-07 11:02:42 · 12 answers · asked by kanu978 2 in Biology

1. Multiply 6x^2 · 7x3

2.Solve x2 + 7x + 6 = 0 for x

3.Solve the quadratic equation x2 + 4x + 1 = 0 using the quadratic formula.

4.Perform the indicated operation: 1/3 - 2/5 divide by 1/2

Thank you

2007-07-07 11:01:57 · 6 answers · asked by Anonymous in Mathematics

this is a question that has two ways to answer it so here it goes................. okay you have two buckets one is a 7 gallon bucket and the other three you have an endless supply of water and the buckets are not marked how do you get five gallons of water EXACTLY. ??? think outside of the box on this one its really simple after you get it

2007-07-07 11:01:39 · 10 answers · asked by jennifer h 2 in Mathematics

I was just curious.

2007-07-07 10:58:15 · 3 answers · asked by blackmamba5069 1 in Medicine

HELP!

2007-07-07 10:57:11 · 5 answers · asked by Nikki Monique 2 in Mathematics

Energy experts tell us to replace regular incandescent lightbulbs with compact fluorescent bulbs, but it seems hard to justify spending $15 on a lightbulb. A 60 W incandescent bulb costs 50 cents and has a lifetime of 1000 hours. A 15 W compact fluorescent bulb produces the same amount of light as a 60 W incandescent bulb and is intended as a replacement. It costs $15 and has a lifetime of 10,000 hours. Compare the life-cycle costs of 60 W incandescent bulb to 15 W compact fluorescent bulbs. The life-cycle cost of an object is the cost of purchasing it plus the cost of fueling and maintaining it over its useful life. Which is the cheaper source of light and which the more expensive? Assume electricity costs $0.10/kWh. Be sure to compare the two over equal time spans.

2007-07-07 10:53:48 · 8 answers · asked by Anonymous in Physics

0.42% of acetic acid molecules in 1.0 M solution are ionized at 25 celcius. Calculate values of Ka, and pKa for acetic acid.

2007-07-07 10:49:11 · 3 answers · asked by sandy 1 in Chemistry

What happens to my peanut butter when i add water to the pot and let it rest? It smells so awful after a while, I almost died in the kitchen from breathing it.

2007-07-07 10:45:09 · 5 answers · asked by Roy Nicolas 5 in Chemistry

1. Write 8 2/9 as an improper fraction

2. Solve the Inequality –2x < 14 for x

3.What is the slope m and y-intercept point of the line 2x – y = –10

4.Find the slope of a line that passes through (-3, 6) and (-2, -7)

thank you

2007-07-07 10:44:50 · 3 answers · asked by Anonymous in Mathematics

2007-07-07 10:43:27 · 8 answers · asked by slh74 2 in Chemistry

Was the dangers of DDT overly exaggerated or erroneous?

Thus exposing millions of people to malaria?

BTW...how many of you heard about this? (That dangers of DDT are erroneous)

2007-07-07 10:39:20 · 9 answers · asked by Anonymous in Biology

Was the dangers of DDT overly exaggerated or erroneous?

Thus exposing millions of people to malaria?

BTW...how many of you heard about this? (That dangers of DDT are erroneous)

2007-07-07 10:38:53 · 5 answers · asked by Anonymous in Medicine

Can anyone tell me what day has the hottest high temperature during the year. I know this can vary, but on average, what day is the hottest. Also, if you can tell me what day it would be for Las Vegas, Nevada I would appreciate it.

Thank you.

2007-07-07 10:36:34 · 5 answers · asked by MasterMmmm 5 in Weather

damn i hate maths, but i need to know how many weeks it will take to save up to get to £124.32 ..

If i have £50 at my gramps house, and i get £5 from him, and £10 from my mum every week, how many weeks will it take to save up?

Thnx. XxXxXxXxXxXxXxX

2007-07-07 10:34:28 · 4 answers · asked by Lacadema (Role-player) 4 in Mathematics

I have three softball sized meteorites (authenticated by local meteor lab) and was told they are each worth around $4,000. I also have some uncut gemstones, but again, don't know the market that well.

2007-07-07 10:33:09 · 6 answers · asked by Anonymous in Earth Sciences & Geology

Function: f(x)=2x^4-7x^3+11x-4

1. What are the x and y intercepts of the function?
2. Where does the graph of the function touch or cross the x axis at each x intercept?
3. How many turning points are on the graph?

2007-07-07 10:31:37 · 1 answers · asked by Anonymous in Mathematics

Say a 3 meter square room.

2007-07-07 10:30:28 · 11 answers · asked by Steven L 1 in Other - Science