Science & Mathematics - 1 November 2006

I'm trying to control an underwater ROV using a conventional radio setup, with the tiny hitch that one obviously cannot transmit radiowaves through water. I was thinking of converting the transmitter output to PWM, piping it down a fiber optic cable to a pulse reciever at the ROV end, reconverting it to FM, and then running it to the reciever.

Now for my problem: how do I convert FM to PWm and back again, in such a way that a conventional radio system won't foul up?

2006-11-01 07:54:38 · 2 answers · asked by sciguy 5 in Engineering

Aircraft, Aerospace

2006-11-01 07:54:28 · 3 answers · asked by Lugnut Jr. 1 in Engineering

2006-11-01 07:53:27 · 4 answers · asked by Anonymous in Other - Science

I have seen the following website but I do no fully understand it. Can some one help me.
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http://mathforum.org/library/drmath/view/58152.html

2006-11-01 07:52:38 · 3 answers · asked by ryewalters 1 in Mathematics

hi i need this for school its home work oh and im in fifth grade

2006-11-01 07:48:57 · 7 answers · asked by Anonymous in Astronomy & Space

how do you show work

2006-11-01 07:48:46 · 6 answers · asked by cathryncsck 2 in Mathematics

2006-11-01 07:42:15 · 21 answers · asked by Anonymous in Mathematics

pls. show the working.. thnx

2006-11-01 07:39:00 · 22 answers · asked by Anonymous in Mathematics

2006-11-01 07:38:11 · 11 answers · asked by Twinkle T 1 in Earth Sciences & Geology

(x^4-3x^2+6) / (x-5)

ty

2006-11-01 07:37:58 · 2 answers · asked by Anonymous in Mathematics

2006-11-01 07:37:01 · 24 answers · asked by itchy 1 in Geography

what is the 25% of 102 and 180?

2006-11-01 07:36:55 · 14 answers · asked by Osiris Z 1 in Mathematics

Today I took a photo of a park landscape. The moon rising in the background. When looking at the scene thru my specticles, the moon was the size of a dinner plate. My specs are 3x mag. I took a digital photo using a 3x mag lens. The moon was now a pin prick, in relation to the landscape when viewed on the digicam LCD. The digi cam sensor is 3000x2000pics.. Why does the camera lie? What causes the disparity of moon size between my eye and the camera?

2006-11-01 07:36:20 · 2 answers · asked by Anonymous in Physics

2006-11-01 07:35:42 · 14 answers · asked by goose 3 in Geography

2006-11-01 07:35:12 · 13 answers · asked by Joanna L 2 in Astronomy & Space

2006-11-01 07:35:06 · 5 answers · asked by gabroo 1 in Zoology

Describe and explain why the properties of gallium are considered to be unusual, identifying the properties that suggest gallium is a metal and those that suggest it is a non-metal

(in 200 words)

2006-11-01 07:34:20 · 2 answers · asked by Lora-F 1 in Chemistry

The equilibrium constant Kc for the reaction:
A(g) + B(g) yields C(g), is 0.76 at 150 degrees C. If 0.800 mol of A is added to 0.600 mol of Bin a 1.00 L container at 150 degrees C, what will be the equilibrium concentration of C?

2006-11-01 07:33:37 · 2 answers · asked by loveboatcaptain 5 in Chemistry

2006-11-01 07:32:17 · 47 answers · asked by tayla_marie_ellis 1 in Earth Sciences & Geology

name as many as possble please! =]
please answer ASAP!!! Thanks!!=]

2006-11-01 07:29:44 · 1 answers · asked by Anonymous in Geography

I have made a wind generator out of cheap, everyday materials.
Is it possible to make solar panels for generating electricity from everyday materials, perhaps something like a thermocouple with two different metals?

2006-11-01 07:29:13 · 5 answers · asked by davee52uk 2 in Engineering

I'm looking for one reffering absolutely to molecular spectros and struction of chemical combinations such as [Co(NH3)6]Cl3?
thx in advance!

2006-11-01 07:28:29 · 1 answers · asked by noname3911 1 in Chemistry

Need the percent out of 102 and 180.

2006-11-01 07:27:13 · 4 answers · asked by Osiris Z 1 in Mathematics

2006-11-01 07:25:23 · 8 answers · asked by homedawg252 1 in Chemistry

2006-11-01 07:23:57 · 3 answers · asked by Anonymous in Biology

2006-11-01 07:23:30 · 9 answers · asked by Katie M 2 in Mathematics

In a titration 25cm3 of ammonia solution react with 33.3 cm3 of 0.1M HCL. What si the concentrationof the ammonia solution in grams dm3??

2006-11-01 07:22:43 · 1 answers · asked by Joyce 4 in Chemistry

how did he help the way we think about mathematics

2006-11-01 07:21:14 · 8 answers · asked by BLA_HA_HEHE 1 in Mathematics

... if the boiling point of water is 100ºC. This also applies to other situations where water evaporates, as in transpiration.

2006-11-01 07:20:41 · 7 answers · asked by Chioma N 1 in Physics

2006-11-01 07:20:26 · 9 answers · asked by daymeana 2 in Weather