Engineering - April 2007

what do you think?

2007-04-20 01:09:09 · 3 answers · asked by cutie_cathy 1

I'm in the process of designing a functional laser rifle, and I have a question. Is a high powered Carbon Dioxide laser the best bet? I know they are used in laser surgery to cut the skin, but I don't know how good it would be at range. I am 17 years old, and I have had it in my head for years to build a laser rifle, and now, I'm actually in the design phase. Do you think that another type of gas laser would be better, or maybe even a non-gas laser. I just know that ammo is heavy, and if there were no ammo, our troops could be more effective. Plus, I'd become a billionaire. If I do become a billionaire, I might even send some money to those who help me. So, there might be something in this for you. I'm still studying the specs of various laser types, and believe that a CO2 laser would be best according to the data collected, and figures.

2007-04-20 00:48:47 · 2 answers · asked by Anonymous

I'm traveling right now, and I have a 120 V charger for my Nintendo DS I brought from the states. The country I am in right now uses 220 V. Is it alright if I try plugging it in?
Not too sure how this works, thanks.

2007-04-20 00:28:54 · 10 answers · asked by Allen Woe 1

How to design and build a small AM/FM radio receiver?

2007-04-20 00:11:58 · 3 answers · asked by s s 2

I have a logic IC. What will be happen if I Connect it’s input and output pins to values that aren’t correct value for example wiring a not gate’s input and output together ! I think that this IC will be damaged. How long it takes?
Thank you!

2007-04-19 23:04:56 · 4 answers · asked by Anonymous

2007-04-19 22:59:31 · 5 answers · asked by archana k 1

I think I've designed a new wind turbine and I need to start thinking about the generator part. How does an electricity generator work in this case and where might I procure one in the UK?

2007-04-19 20:29:21 · 2 answers · asked by tuthutop 2

Does anybody know about motor impedance? does a 120 volt motor cost more to operate than a 240 volt motor?

2007-04-19 17:20:39 · 5 answers · asked by Mark N 3

2007-04-19 16:28:20 · 2 answers · asked by rr2004 1

2007-04-19 14:56:30 · 9 answers · asked by PANDA 1

2007-04-19 14:40:25 · 5 answers · asked by A T 2

How you choose a development tool for your 8051 device? Assume that you've got one of the simpler ones without any fancy add-ons like CAN or USB. The big players seem to be Keil, Raisonance, IAR systems, and Crossware (pretty much in that order) -- these guys seem to have their own IDE and all the tools to go with (assembler, compiler, debugger, in-system debugger) without linking to 3rd parties for help. How do you choose from them? (Specifically features, ignore price)

2007-04-19 13:42:56 · 3 answers · asked by Arthur Y 1

Can anyone explain it in a more tangible way than pure thermodinamics? Maybe some examples of when do a system reaches this temperature or something like that.

2007-04-19 13:24:36 · 4 answers · asked by IQ DOSON 2

science project......

2007-04-19 11:52:17 · 4 answers · asked by rachel 1

could i put black powder into a pipe bomb? im doing this safetly and experimenting would it work, not for the crimnal mind ppl!

2007-04-19 10:51:10 · 2 answers · asked by Anonymous

i plan to run a device consuming only 1.5ah off a inverter. if i connect this to a fully charged 50ah 12 car battery, how long would the battery last? any ideas???

2007-04-19 10:35:51 · 4 answers · asked by mrbigjag 2

2007-04-19 10:30:52 · 6 answers · asked by tedster 1

2007-04-19 10:28:23 · 3 answers · asked by breakfromtherules 1

2007-04-19 10:08:04 · 3 answers · asked by bpanzer15 1

This is a second part question from a previous question on what an HVAC is. Okay, I'm going on a date tomorrow, and the girl I'm dating is this really beautiful sophisticated sales engineer for a large HVAC company. What do they actually do? I'm a technical person, and my dad was an engineer for IBM but I'm more of a marketing kind of guy. I'm looking to maybe ask her questions that make me seem knowledgeable as well as interested in what she does. As she's explaining it to me, I"d like to know what she is talking about!

2007-04-19 10:03:00 · 1 answers · asked by gotham158 3

2007-04-19 09:54:15 · 3 answers · asked by Anonymous

I remember very little from my long-ago electronics classes, but i think this is probably something very easy. I have four 12v devices that i am putting into a single enclosure and would like to run them all off one power supply. the total amp draw is under 4.5 amps, and i have a 5 amp rated ac adaptor, so that shouldn't really be a problem. My question is this: parallel or series? i'm thinking that it needs to be parallel but would like some confirmation from people who know more than i do.

2007-04-19 09:02:14 · 2 answers · asked by flammbino 1

Known anyone that has taken it and what did they think?

I'm taking this soon and i am kinda worried about it. I do pretty well in my classes, but i cant remember everything about each class and my chemistry and such have all been forgotten. I'm afraid im gonna be studying for way too long for this thing

2007-04-19 07:52:04 · 5 answers · asked by Anonymous

Disposable pens? When?

2007-04-19 07:48:17 · 7 answers · asked by Anonymous

2007-04-19 07:37:40 · 6 answers · asked by Giovanna D 1

let's see, a couple of orange cones one before the construction,one after every ? feet. What else?

2007-04-19 06:27:11 · 4 answers · asked by Anonymous

2007-04-19 05:40:56 · 4 answers · asked by Colin D 1

I'm about to go on a date with a girl who is an engineer at a company that sells hvac systems and services. I'd like to sound like I know what she does. thanks!

2007-04-19 05:39:44 · 11 answers · asked by gotham158 3

If the AC supply is replaced by a DC supply, there will be absence of alternating flux,so what will be the behaviour of the transformer?

2007-04-19 05:39:03 · 8 answers · asked by srikanta 2

does anyone know how robotics can be used in science? please give me a real life example, where robotics was actually used in the field of science...

2007-04-19 05:20:32 · 2 answers · asked by bitterhoney 1