Engineering - June 2007

is it possible to change a baby swing from batteries to electrical plug in type ,if yes how and is this safe?

2007-06-12 12:09:01 · 5 answers · asked by Anonymous

2007-06-12 11:58:25 · 5 answers · asked by Matt S 1

please explain in detail
(someone told me that it was the resistance between current and voltage is it true since current flows the same way electrons do which way is the voltage going + or -

2007-06-12 11:30:10 · 3 answers · asked by macgyver 1

For example I'd like to see a waterproof, shock resistant and solar powered mobile phone invented - incidently, I believe Nokia did invent a solar powered mobile phone - but it seemed to die a death - anyone know which one I'm talking about and can give me a weblink showing this model?

See - something like that - a useful invention that hasn't or doesn't appear to have been invented yet?

2007-06-12 10:50:25 · 15 answers · asked by Anonymous

2007-06-12 10:10:12 · 3 answers · asked by Anonymous

2007-06-12 08:54:52 · 15 answers · asked by Anonymous

2007-06-12 08:54:45 · 5 answers · asked by twilliam4055 1

2007-06-12 08:51:56 · 8 answers · asked by twilliam4055 1

I want to build a new house. Everything's fine except the electricity poles. They can't be avoided. I chose a nice land; however, there is a pole with a transformer at the corner of my backyard. Is it safe? Does it affect people's health? Thank you for your response. Have a nice day!

2007-06-12 07:56:23 · 4 answers · asked by Anonymous

what will happen to a reading of a voltmeter if it is attached to a charged capacitor
a) it will go up slowly
b) it will remain constant
c) it will go down slowly
d) it will drop abruptly to zero

2007-06-12 07:54:58 · 3 answers · asked by Anonymous

I often find schematics online for circuits I'd like to build. I know my way around a soldering iron and I know where to get parts, but my knowledge of electronics is limited.

I'm looking for a resource that will let me translate what I seen in a schematic into something I can build without learning the theory. (Yes, this makes me a poser and a Bad Person. I accept this.)

Is it just a matter of connecting *this* lead from *this* component to *that* lead from *that* component? I see many with, say, a +12V connection -- where does the -12V connect? That's the kind of stuff that I'm looking for answers to.

Yes, I know I should learn all the background, but honestly I'm only planning the occasional tinkering, and I didn't learn organic chem to start a garden. :)

Thanks!

2007-06-12 06:55:24 · 3 answers · asked by Andrew 1

Can anyone tell me the scientific fact behind it?

2007-06-12 05:57:09 · 10 answers · asked by Anonymous

is it possible? what do you learn?

2007-06-12 05:41:54 · 5 answers · asked by Covenanted 2

Should I attach the HUM-X hum eliminator to the wall outlet first or is it better i connect it to the multi-connector power strip all the electronics share?

2007-06-12 05:04:50 · 1 answers · asked by Brainstorm 1

I have an exam tomorrow in science, i neet to know i think.

Please help

Thanks

2007-06-12 04:37:31 · 4 answers · asked by questionsquestionsquestions 2

i have secured 159 in pcm & 55%

2007-06-12 04:23:11 · 9 answers · asked by rajesh 1

please help i cant make him i mean it fit...

2007-06-12 04:16:52 · 4 answers · asked by fftyler12 1

Any info on chain + sprocket drives with regards to MechEnginee. How to calculate the correct tensions ie slack and power etc.

2007-06-12 02:58:45 · 5 answers · asked by Anonymous

I am looking for a digital compass that is acurate to +/- half a degree. Can anyone help?

2007-06-12 01:25:56 · 2 answers · asked by Anonymous

I read how the pentagon is trying to develop all kinds of robots for combat use

2007-06-12 00:12:40 · 2 answers · asked by Anonymous

I want to major in the field of engineering, but i dont know which one exactly.


1. i like to create my own clothes
2. i want to make little machines and such(i dont know how)
3. i like to make homemade movies
4. i like to play the piano
5. i can work hard with my hands and my brain
6. i love to make things that are new
7. i love to run(if this helps)

2007-06-11 23:53:24 · 5 answers · asked by Anonymous

It is usually claimed by the manufacturers that Composite type insulators are maintenance free; in other words these insulators for HV & EHV overhead transmission lines once installed are there for the life of the transmission line without any requirements of regular maintenance. Usually for ceramic insulators like glass and porcelain, a definite regular maintenance schedule is required, which is not only time consuming but utilities have to spend millions of dollars on such maintenance. As our utility is in middle east, our transmission lines run through desert areas of high winds and very close to the coastal region. Because of this desert coastal environment, the pollution of the insulators takes place very fast as compared to European countries. We want to replace the ceramic type insulators with Composite type to counter the pollution factor.

2007-06-11 23:09:23 · 1 answers · asked by tanveer_sofi 1

My brother wants a pocket multimeter for his birthday but I can't find one that has good ranges on it in a small size. Voltage and resistance ranges are not a problem but current ranges seem to stop at 200mA. Can you work out current output from other multimeter readings like voltage etc for AC and DC current upto about 15A. The main use would be for testing powersupplies onsite,

thanks guys.

2007-06-11 22:27:25 · 4 answers · asked by moonshinerat 1

evaporation

2007-06-11 21:41:02 · 4 answers · asked by lazel_25 1

1.Obtuse
2.Right
3.Equilateral
4.Acute

2007-06-11 20:53:20 · 9 answers · asked by jetta98284 1

Compare job prospectes of civil and metallurgical engg in future in india and outside

2007-06-11 20:45:45 · 3 answers · asked by Anil P 1

2007-06-11 19:53:55 · 5 answers · asked by makino_bt 2

I was (I think...) almost killed in an above ground pool. We were attempting to drain the last of a 7000 gal. above ground pool with a small, fish tank type, pump. While I was making sure the small pump was submerged, he was connecting the extension cords. Niether of us were paying attention to the first connection steadily making its way into the inch or so of water still in the pool. JUST as it was about to touch the water I yelled, "ELECTRICITY, ELECTRICITY!" and ran on water to the plastic ladder (with metal frames). The plug was wet and I was thankfully (and only) in a state of shock.

So how much voltage DOES it take to kill a person in the water?

2007-06-11 18:08:58 · 11 answers · asked by Boobie la Bug 2

2007-06-11 17:59:13 · 1 answers · asked by Anonymous

I don't mean as in which state or anything. I mean what conditions should I look out for when I'm building it. Like, should I be concerned about earthquakes? Should I decide what kind of land I should build it on? Should it be near something?

2007-06-11 15:27:15 · 5 answers · asked by Anonymous