Science & Mathematics - 15 August 2007

2007-08-15 08:43:19 · 7 answers · asked by bfong33 1 in Engineering

My young nephew is interested in rocks and minerals - what stores in the SF bay area sell them?

2007-08-15 08:42:17 · 1 answers · asked by seasnowsky 2 in Earth Sciences & Geology

i need to know please

2007-08-15 08:39:47 · 7 answers · asked by ? 2 in Chemistry

2007-08-15 08:39:30 · 20 answers · asked by Gray 3 in Mathematics

can anyone describe please! the energy conversion of a television?

thank you!!!!!!!!!!!!!!!!!

2007-08-15 08:36:14 · 2 answers · asked by Anonymous in Physics

If you put a penny on the first square of a chessboard, 2 pennies on the second square, 4 pennies on the third square, 8 pennies on the fourth square etc, etc. How high would the pile be on the 64th square? (In miles or k/ms)

2007-08-15 08:35:30 · 12 answers · asked by Gray 3 in Mathematics

http://www.flickr.com/photo_zoom.gne?id=1129569678&size=l&context=set-72157601463818359

http://www.flickr.com/photo_zoom.gne?id=1128777813&size=l

2007-08-15 08:31:50 · 7 answers · asked by bambino7758 2 in Zoology

I am trying to model a wireless communication network with a receiver (Rx) and a transmitter (Tx). If Tx and Rx have known maximum data rates in bps, how do I calculate how the maximum data rates degrade as distance between the two is increased? Or is this an incorrect assumption on my part, and the max rates instead remain constant?

2007-08-15 08:30:47 · 5 answers · asked by krazyzima 2 in Engineering

Solve for x

500,000= 100000(50) - 2000000 - X(50)

I keep getting 70k but my text book says 50K. Who is right? Its been awhile since the 9th grade.

2007-08-15 08:28:04 · 7 answers · asked by ;aldjf;lasdjf;lkj; 2 in Mathematics

In what ways are sound and light waves similar?

Are they both a form of energy?
Do they both behave as both particles and waves?
Can they both experience interfierence
Do they both move in 3-dimensional space?
Are they both transverse and therefore both can be polarized?

2007-08-15 08:23:40 · 2 answers · asked by lala 2 in Physics

Okay so here it goes:

E = Energy

Unit of Energy = Joule = Kg *m/s^2

However the equation E = mc^2

m = mass (kg)

c = speed of light (m/s^2)

if you square the units of the speed of light you get m^2/s^4

so the equation E = mc^2 yields the units Kg*m^2/s^4, when it should yield Kg*m/s^2

What the hell?

2007-08-15 08:22:48 · 10 answers · asked by Anonymous in Physics

what sort of drugs are tested for in drug screens?

2007-08-15 08:22:04 · 4 answers · asked by ? 2 in Medicine

It was made on July 26, 1977 by a man named Chief John "A.J." Huffer and it is video of a reported thunderbird. I have looked EVERYWERE and still can't find! I know the video is out there and it is making me sooo frustrated that I can't find it. Some more information on it is it was featured on a show called "animal x" and on the discovery channel before.

2007-08-15 08:21:02 · 3 answers · asked by wiccanbub 1 in Other - Alternative

2007-08-15 08:19:43 · 1 answers · asked by matilda 1 in Mathematics

2007-08-15 08:18:14 · 5 answers · asked by riogrande_texas 1 in Physics

2007-08-15 08:16:54 · 4 answers · asked by I hate Hillary Clinton 6 in Astronomy & Space

For example in parametrics...where you dont necessarily have strict functions. How do you find that vertical tangent out manually (instead of just looking at the graph on a calculator)?

2007-08-15 08:14:53 · 2 answers · asked by Anonymous in Mathematics

Why does a bottled water placed in a freezer that appears to not be frozen turn to slush/ice when it is opened and you take a drink from it?

2007-08-15 08:13:40 · 3 answers · asked by poncholock 1 in Chemistry

I have been stuck in the omarian nebula orbiting draxis prime for almost 5 hours now. I thought my phase transfuser array was the problem but now I can see it's my warp coil that's burnt out. I can't get this thing to start up. What should I do?

2007-08-15 08:11:16 · 13 answers · asked by Joe 4 in Engineering

i'm scared its poisonous, i found one about the size of a dime (including legs) on my golf bag and later another one about 1 tenth of that side. I think it had babies in my golf bag DX! But i'm scared they might be poisonous. Has anyone ever heard of such a spider?

2007-08-15 08:08:31 · 7 answers · asked by Kris G 1 in Zoology

Can the flapping of a butterfly's wings in Africa really cause a hurricane in the U.S.

2007-08-15 08:06:47 · 11 answers · asked by Anonymous in Weather

why does water have such a high specific heat capacity ?

thanks

2007-08-15 08:06:46 · 2 answers · asked by harry m 6 in Chemistry

Fox
Coyote
Wolf
Deer
Moose
Elk
Antelope
Bear
Rabbit
Squirrel
Crow
Chipmunk
Sparrow
Owl
Beaver
Otter
Mountain Lion
Eagle
Hawk
Duck
Goose

2007-08-15 08:00:04 · 5 answers · asked by Bill W 【ツ】 6 in Zoology

a.    CH3 CH3
             l    l
CH3 - C = C - CH3

b.
CH3       CH3
 l                l
C --- C - CH - CH2 - CH3

c.
CH2 = C - CH - CH3
             l        l
          CH3   CH2 - CH3

d. 4-methyl-1-pentyne
e. 2,3,3-trimethyl-1-hexene
f. 3-ethyl-4-decene

Im a sophomore going into AP chem next year doing summer homwork, and I really need help with cis-trans geometric isomerism. The book doesn't say much about it. If anyone could post links for more info / help thanks.

2007-08-15 07:53:54 · 4 answers · asked by d 1 in Chemistry

From where can I get a "cyclic timer" circuit (or a ready-made device in India) for a 2 tonnes A.C. so as to switch ON for half an hour and then switch it OFF for the next half an hour.

2007-08-15 07:53:50 · 1 answers · asked by Anonymous in Engineering

I have a t-shirt that says, "I will keep wearing black until God creates a darker color". I was told that ebony was darker than black. Is that true?

2007-08-15 07:52:10 · 8 answers · asked by throwinbricks 1 in Other - Science

What is the cubed-root of (27a^9b^12c^6)? Please, help me.

2007-08-15 07:48:46 · 5 answers · asked by Anonymous in Mathematics

Or do they come from somewhere else after the fruit starts to rot? That doesnt make sense inside of a sealed house, does it?

2007-08-15 07:47:20 · 3 answers · asked by Anonymous in Zoology

I mean, not the "end of the world" thing but do they say anything about the possible effects of planetary and sun positions in the December Solstice?

2007-08-15 07:30:49 · 11 answers · asked by Madison 1 in Astronomy & Space

2007-08-15 07:28:17 · 5 answers · asked by Anonymous in Engineering