Science & Mathematics - 4 August 2006

Here's a fun elementary algebra problem...

A boat travels 26 miles up a river in the same amount of time it takes to travel 34 miles down the same river. If the current is 2 mph, what is the speed of the boat in still water?

Hint: t= d/r

2006-08-04 10:02:41 · 13 answers · asked by humble.earthling 2 in Mathematics

surely they should keep accelerating and eventually get just below the speed of light? or does this acceleration take too long to achieve?

2006-08-04 10:01:03 · 18 answers · asked by Anonymous in Astronomy & Space

Why do you suppose your answer is right?

2006-08-04 10:00:02 · 15 answers · asked by humble.earthling 2 in Other - Science

2006-08-04 10:00:01 · 44 answers · asked by ballu 1 in Astronomy & Space

2006-08-04 09:57:18 · 8 answers · asked by rg 1 in Biology

Can you use sound waves to create friction at a distance and have the friction create power at the new location.

2006-08-04 09:52:00 · 6 answers · asked by bgennero 1 in Physics

I NEED LATEST FINDINGS ON TUMOR VIRUS MECHANISMS

2006-08-04 09:51:47 · 5 answers · asked by CREAMBOY 1 in Medicine

1.Which is the better buy: 5 lb of sugar for $4.75 or 20 lb of sugar for $19.92?

2.What is the rate of
240 lbs of ferterlizer-
_________________
6 lawns


3.Write the proportion that is equivalent to the given statement.

If Maria hit 8 home runs in 15 softball games. Then she should hit 24 home runs in 45 games.

2006-08-04 09:46:39 · 7 answers · asked by Anonymous in Mathematics

2006-08-04 09:43:54 · 8 answers · asked by richard n 2 in Earth Sciences & Geology

like think about it, its a load of gas right next to a complete vaccum, why doesnt the whole earth depressurise? i dont buy gravity holding it there because the pressure differential between atmosphere and vaccum is huge. (hence space shuttles getting in a bit of a mess if a hole suddenly appears in the hull)

2006-08-04 09:40:36 · 15 answers · asked by Anonymous in Physics

i dont know what im doing:(

2006-08-04 09:33:49 · 2 answers · asked by Anonymous in Chemistry

Im building an airframe for an airplane, what should i use for the material?

2006-08-04 09:30:45 · 14 answers · asked by alexfashing 1 in Engineering

Did you know that other than us, there were 6 known (extinct) Hominina (human-like) species that once existed and perhaps co-existed with one another on Earth? We are the only known Hominina species to have luckily survived so far.

Hominina:
http://en.wikipedia.org/wiki/Hominina

Homo (humans):
http://en.wikipedia.org/wiki/Homo_%28genus%29
Paranthropus (extinct):
http://en.wikipedia.org/wiki/Paranthropus
Australopithecus (extinct):
http://en.wikipedia.org/wiki/Australopithecus
Sahelanthropus (extinct):
http://en.wikipedia.org/wiki/Sahelanthropus
Orrorin (extinct):
http://en.wikipedia.org/wiki/Orrorin
Ardipithecus (extinct):
http://en.wikipedia.org/wiki/Ardipithecus
Kenyanthropus (extinct):
http://en.wikipedia.org/wiki/Kenyanthropus

2006-08-04 09:30:34 · 2 answers · asked by astrowulf2002 2 in Other - Science

Do you think it really looks like the face of a person?

What are the dimensions of it- how wide, how high, etc.?

And since erosion occurs on Mars (perhaps the dynamics there are quite different from erosion on earth), then why hasn't the face either been obliterated or at least distorted by dust storms?

Could it be that we are seeing too much into the face- that perhaps it really is a caprice of nature?

2006-08-04 09:28:33 · 17 answers · asked by Anonymous in Astronomy & Space

cause i found pics of people dated from the 1800s if u can help that would be a blessing

2006-08-04 09:27:40 · 2 answers · asked by Anonymous in Geography

This is not meant to be a "brain teaser". I really need to know.

2006-08-04 09:26:16 · 14 answers · asked by orchard_littlejoe 2 in Physics

And if so, do they look like paper dolls?

(please do not remind me the correct term is conjoined)

2006-08-04 09:22:17 · 4 answers · asked by SwampDog 2 in Medicine

most of my m8s smoke weed spillfs. but i was wondering is weed just another name for marijuana.

2006-08-04 09:20:02 · 31 answers · asked by dumdum 2 in Medicine

Because of the heat wave?

2006-08-04 09:19:19 · 16 answers · asked by kathy6500 3 in Earth Sciences & Geology

Does anyone know where the water comes from and where the falls drain to? Is it possible for the falls to ever stop falling?

2006-08-04 09:17:36 · 9 answers · asked by Eric C 1 in Geography

2006-08-04 09:11:13 · 10 answers · asked by L 1 in Other - Science

2006-08-04 09:05:11 · 3 answers · asked by Brit 1 in Medicine

im 12 years old and going to the 7th grade and i dont know my multiplication tables.the weird thing is none of my 8 friends know them either and we all were in the same class in school,do u have any ideas for memorizing them b4 skool next thursday.help!!!

2006-08-04 09:04:02 · 35 answers · asked by a.k.a Australia 2 in Mathematics

this is on the biochemical level...we need to find if the protien is acting upstream or downstream

2006-08-04 09:02:42 · 2 answers · asked by nybioartist 1 in Biology

2006-08-04 09:01:15 · 4 answers · asked by GabaJaba 2 in Mathematics

I'm sick of hearing how cold it feels in the winter and how hot it feels in the summer. So what does it take for our skin to agree with the thermometer - no wind and 50% humidity?

2006-08-04 09:00:41 · 4 answers · asked by sakicfriend 3 in Weather

vectors can be like disease carriers how

2006-08-04 08:58:31 · 3 answers · asked by bettyjo 1 in Biology

I believe this to be a much more complicated mathematical question than it appears on the surface. But I have been trying to figure out other numbers where the sum of them is equal to the product of them. But I am stumped.

Thanks,

2006-08-04 08:58:07 · 68 answers · asked by rar_riley 2 in Mathematics

2006-08-04 08:53:39 · 7 answers · asked by isaac a 3 in Weather

2006-08-04 08:51:56 · 12 answers · asked by voldemortandhogwarts 1 in Physics