Science & Mathematics - 15 October 2006

2006-10-15 12:16:13 · 13 answers · asked by louise 2 in Biology

2006-10-15 12:15:51 · 2 answers · asked by McGriddles or Random 1 in Zoology

2006-10-15 12:15:02 · 13 answers · asked by gotslayer 2 in Chemistry

I am supossed to do a project on the history of equations like who invented the system, in what year, city, what happened in the world at that time.... it's a project about the history of math and my group got the concept of equations.... I can use any kind of help.... thanks!!!!!

2006-10-15 12:14:17 · 2 answers · asked by yafit k 4 in Mathematics

What are the 4 states of matter in order?

2006-10-15 12:13:00 · 6 answers · asked by Anonymous in Other - Science

Hi, I am trying to operate this electronic device which requires 9 volt. I can't use a single 9 volt battery, but I could only connect 6 double A batteries series like positive to negative. Over all, once this series is completed, how can I take the advantage to use those batteries in that series, and with out having the battery "heat-up"?
This device is needed to be used like a DC car cigarette plug. The series will be the female plug and the device will have a male plug. Can anyone help me make such power, with out any accessories except the DC plug, batteries and wires...? A website would be accepted.

2006-10-15 12:11:08 · 5 answers · asked by fra82 1 in Engineering

2006-10-15 12:07:46 · 2 answers · asked by ckielblock18 1 in Biology

2006-10-15 12:07:41 · 14 answers · asked by catweazle 5 in Astronomy & Space

2006-10-15 12:07:29 · 10 answers · asked by Courtney =) 1 in Earth Sciences & Geology

Human evolution has ceased - for there to be natural selection, there must be survival of the fittest. Today, everyone survives, at least long enough to pass on their genes.

I posit that many of us have genes for selfish behavior; those genes made sense in the Stone Age. Maybe rape or genocide genes too.

Don't believe me? Answer this question: why are men 25% bigger than women, on average? Answer, because our ancestors competed for breeding possibilities, and the bigger men won out, even though there is a penalty for larger body mass.

Though the evolution of behavior traits has ceased, some believe the evolution of behavior ideas is still going on - memetics.

After consideration, I don't think *ideas* are strong enough to overcome our natural tendencies. If it were otherwise, there would be no religious wars.

Colonize the galaxy? Plausible, even if all we do is send our genetic material. Once started, a chain reaction completes the process in blink of an eye.

What should we do?

2006-10-15 12:06:21 · 10 answers · asked by Tom D 4 in Other - Science

Im having some trouble solving this one, could someone help me out

There is a pole in the lake. One half of the pole is in the ground, and one third of the pole is covered by water, 8ft is out of the water. What is the total length of the pole in ft.

2006-10-15 12:06:12 · 8 answers · asked by n4rumi 2 in Mathematics

1. If a velocity that is 1 cm long represents a velocity of 10 km/h, what velocity does a vector 2 cm long drawn to the same scale represent?
2. When a rectangle is constructed in order to add velocities, what represents the resultant of the velocities?
a horizontal side of the rectangle
none of these
a vertical side of the rectangle
the diagonal
3. Calculate the resultant velocity of an airplane that normally flies at 210 km/h if it encounters a 40 km/h tailwind.
Calculate the resultant velocity if it encounters a 40 km/h headwind.
4. Calculate the resultant of the pair of velocities 80 km/h north and 55 km/h south.
Calculate the resultant if both velocities are directed south.
5. What is the maximum possible resultant of two vectors with magnitudes of 4 and 3 units? What is the minimum possible resultant?
maximum magnitude: ?
minimum magnitude: ?

2006-10-15 12:04:25 · 5 answers · asked by vintagex50s 2 in Physics

that shoots bottles and thats made of pvc and SIMPLE min range 100ft (if you can web would help)

2006-10-15 12:01:22 · 2 answers · asked by bert_haney14 1 in Other - Science

2006-10-15 12:00:07 · 11 answers · asked by ▒▒ Da Terra ▒▒ 7 in Physics

I f you live in Canada's far north , what colour would you choose to wear? why do you think its a best idea?

2006-10-15 11:59:45 · 7 answers · asked by Dharshi 2 in Other - Science

2006-10-15 11:59:32 · 4 answers · asked by $Sun King$ 7 in Other - Science

2006-10-15 11:59:03 · 13 answers · asked by Courtney =) 1 in Earth Sciences & Geology

The force that must be exerted to drive a nail into a wall is roughly as shown in the graph of the figure below . The first 1.2 cm are through soft drywall; then the nail enters the solid wooden stud. How much work must be done to hammer the nail a horizontal distance of 5.0 cm into the wall?

2006-10-15 11:58:28 · 2 answers · asked by Anonymous in Physics

2006-10-15 11:54:05 · 10 answers · asked by Anonymous in Astronomy & Space

The very amount of "existence" one has undergone is measured by the time interval. If time were indeed theoretically 'stopped'--such as time travel movies' and science fiction books' plots suggest--would existence be deemed impossible?

2006-10-15 11:48:45 · 8 answers · asked by Mai M 1 in Physics

does each island have its own ? Is it hydroelectric & where is it located ?

2006-10-15 11:48:41 · 6 answers · asked by Anonymous in Earth Sciences & Geology

(alkaline)

milk, lemon, vinegar, or tomatoes?

2006-10-15 11:46:20 · 6 answers · asked by Anonymous in Biology

preferably a site or store i can order from

i dont want to spend anymore than $150 so if you know any other metals that make just as good electrodes please suggest them

2006-10-15 11:46:06 · 2 answers · asked by Anonymous in Chemistry

Just looking at a duck and thought mmmm what is a ducks beak made from!

2006-10-15 11:45:53 · 11 answers · asked by libsterette 2 in Zoology

preferably a site or store i can order from

i dont want to spend anymore than $150 so if you know any other metals that make just as good electrodes please sugest them

2006-10-15 11:43:32 · 3 answers · asked by Anonymous in Engineering

2006-10-15 11:42:47 · 5 answers · asked by ? 1 in Earth Sciences & Geology

Is there a possibility that this might have happened because of the North Korean underground neuclear detenation?

2006-10-15 11:41:24 · 8 answers · asked by bingobirdie 1 in Earth Sciences & Geology

I know that I can squeeze the leaf buds from trees to collect propolis. I would like to extract the same or similar product but faster. Also any other liquid the tree or plants might yeald. Thanks folks Gauranga June

2006-10-15 11:40:14 · 4 answers · asked by dragon 2 in Botany

It's seen naturally in less that 2% of our population. It is, however, said that it will completely disappear within the next 50 years.

Interesting. Does anyone know why?

2006-10-15 11:38:44 · 1 answers · asked by pnoiz1 2 in Biology

or is there any easy way to do this? what if i want to divide a large circle into 400 equal slivers? i don't want to do this by hand but on the computer.

2006-10-15 11:34:16 · 7 answers · asked by beesandhoney 2 in Mathematics